TWI881462B - Optical imaging lens, imaging device and electronic device - Google Patents

Abstract

An optical imaging lens includes, from the object side to the image side: the first lens has negative refractive power, its object side is convex, and its image side is concave; the second lens has negative refractive power, its object side is concave, and its image side is concave; the third lens has positive refractive power, its object side is convex, and its image side is convex; the fourth lens has positive refractive power, its object side is convex, and its image side is convex; the fifth lens has negative refractive power, its object side is concave ,and its image side is concave; the sixth lens has positive refractive power, its object side is convex, and its image side is convex; and the seventh lens has positive refractive power, its object side are convex, and its image side is concave. When specific conditions are satisfied, the optical imaging lens could have a compact size, wide angle of view and good imaging qualities.

Description

Optical photographic lens assembly, imaging device and electronic device

The present invention relates to an optical photographic device, in particular to an optical photographic lens set that can be used in general electronic devices or portable electronic devices, and an imaging device and an electronic device having the optical photographic lens set.

With the advancement of semiconductor process technology, the size of photosensitive elements (such as CCD and CMOS Image Sensor) required for photographic devices can be reduced and meet the requirements of miniaturized photographic devices, driving the development trend of consumer electronic products to increase the added value of products by installing miniaturized cameras. Taking portable electronic devices such as smart phones as an example, due to their lightness and portability, today's consumers mostly replace the habit of using traditional digital cameras with mobile phones to take pictures. However, consumers' requirements for portable electronic devices are increasing day by day. In addition to pursuing beautiful appearance, they also require small size and light weight. Therefore, the miniaturized camera installed in portable electronic devices must be further miniaturized in overall size before it can be installed in electronic products with a thin and light appearance.

In addition, consumers' requirements for the image quality of camera devices are also increasing. In addition to clear image quality, they also need to meet the needs of a variety of photography environments. Therefore, how to provide a small camera device with good image quality has become an urgent problem to be solved.

Therefore, in order to solve the above problems, the present invention provides an optical photographic lens set, which includes, from the object side to the image side, a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface and image side surface are both concave; a third lens having positive refractive power, whose object side surface and image side surface are both convex; an aperture; a fourth lens having positive refractive power, whose object side surface and image side surface are both convex; a fifth lens having negative refractive power, whose object side surface and image side surface are both concave; a sixth lens having positive refractive power, whose object side surface and image side surface are both convex; and a seventh lens having positive refractive power, whose object side surface is convex and image side surface is concave; wherein the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the effective focal length of the optical photographic lens set is EFL, and the radius of curvature of the image side surface of the seventh lens is R14, which satisfies the following relationships: 0.012＜|(CT1-CT2)/EFL|＜0.071 and 1.9＜R14/EFL＜4.

The present invention further provides an optical photographic lens assembly, which comprises, from the object side to the image side, a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface and image side surface are both concave; a third lens having positive refractive power, whose object side surface and image side surface are both convex; an aperture; a fourth lens having positive refractive power, whose object side surface and image side surface are both convex; a fifth lens having negative refractive power, whose object side surface and image side surface are both concave; a sixth lens having positive refractive power, whose object side surface and image side surface are both convex; and a seventh lens having positive refractive power, whose object side surface is convex and image side surface is concave; wherein the distance from the image side surface of the second lens to the object side surface of the third lens on the optical axis is AT23, the distance from the image side surface of the third lens to the object side surface of the fourth lens on the optical axis is AT34, the effective focal length of the optical photographic lens set is EFL, and the radius of curvature of the image side surface of the seventh lens is R14, which satisfies the following relationships: 0.04＜|(AT34-AT23)/EFL| ＜0.24 and 1.9＜R14/EFL＜4.

According to an embodiment of the present invention, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the distance from the object side of the first lens to the imaging surface of the optical camera lens set on the optical axis is TTL, which satisfies the following relationship: 1.5＜AT67*TTL＜3.4.

According to an embodiment of the present invention, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the combined focal length of the first lens, the second lens and the third lens is f123, which satisfies the following relationship: -8＜AT34*f123＜-4.

According to an embodiment of the present invention, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the distance from the object side of the first lens to the imaging plane of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.4＜(R7-R8)/TTL＜0.6.

According to an embodiment of the present invention, the focal length of the second lens is f2, the focal length of the seventh lens is f7, and the distance from the object side of the first lens to the imaging surface of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 1.3＜(f7-f2)/TTL＜1.7.

According to an embodiment of the present invention, the focal length of the second lens is f2, the focal length of the sixth lens is f6, and the distance from the object side of the first lens to the imaging surface of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.3＜(f6-f2)/TTL＜0.5.

According to an embodiment of the present invention, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the distance from the object side of the first lens to the imaging plane of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.3＜(R11-R12)/TTL＜0.5.

According to an embodiment of the present invention, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the distance from the object side of the first lens to the imaging plane of the optical camera lens set on the optical axis is TTL, which satisfies the following relationship: 0.4＜(R13+R14)/TTL＜0.9.

According to an embodiment of the present invention, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the effective focal length of the optical camera lens set is EFL, which satisfies the following relationship: 0.12＜(CT4+CT5)/EFL＜0.17.

According to an embodiment of the present invention, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the effective focal length of the optical camera lens set is EFL, which satisfies the following relationship: 0.12＜(AT34-AT67)/EFL＜0.32.

According to an embodiment of the present invention, the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, which satisfies the following relationship: 0.026＜(AT34-AT23)*(AT34-AT67) ＜0.384.

According to an embodiment of the present invention, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, the thickness of the first lens on the optical axis is CT1, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: 0.007＜(AT34-AT67)*(CT1-CT2) ＜0.101.

According to an embodiment of the present invention, the refractive index of the first lens is Nd1, the refractive index of the third lens is Nd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 0.6＜R4/(Nd1*Nd3) ＜0.78.

According to an embodiment of the present invention, the dispersion coefficient of the first lens is Vd1, the dispersion coefficient of the third lens is Vd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 435＜(Vd1*Vd3)/R4＜555.

According to an embodiment of the present invention, the combined focal length of the first lens, the second lens and the third lens is f123, and the combined focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens is f4567, which satisfies the following relationship: -2.3＜f123/f4567＜-1.8.

According to an embodiment of the present invention, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the distance from the object side of the first lens to the imaging plane of the optical photography lens assembly on the optical axis is TTL, which satisfies the following relationship: 3.2＜(R11-R12)*(R13+R14)/TTL＜5.4.

According to an embodiment of the present invention, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, and the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, which satisfies the following relationship: 0.002＜(CT1-CT2)*(AT34-AT23) ＜0.075.

According to an embodiment of the present invention, at least two lenses among the first lens to the seventh lens are made of glass.

The present invention further provides an imaging device, which includes the optical imaging lens set as described above, and an image sensing element, wherein the image sensing element is disposed on the imaging surface of the optical imaging lens set.

The present invention further provides an electronic device, which includes the imaging device as described above.

In the following embodiments, each lens of the optical photographic lens set can be made of glass or plastic, but is not limited to the materials listed in the embodiments. When the lens material is glass, the lens surface can be processed by grinding or molding; in addition, due to the temperature change resistance and high hardness of the glass material itself, the impact of environmental changes on the optical photographic lens set can be reduced, thereby extending the service life of the optical photographic lens set. When the lens material is plastic, it is beneficial to reduce the weight of the optical photographic lens set and reduce production costs.

In the embodiment of the present invention, each lens includes an object side facing the object being photographed and an image side facing the imaging plane. The surface shape of each lens is defined according to the shape of the surface in the region near the optical axis (near axis). For example, when the object side of a lens is described as convex, it means that the object side of the lens in the region near the optical axis is convex. That is, although the lens surface is described as convex in the embodiment, the surface may be convex or concave in the region far from the optical axis (off axis). The shape of each lens near the axis is determined by whether the radius of curvature of the surface is positive or negative. For example, if the radius of curvature of the object side of a lens is positive, the object side is convex; conversely, if the radius of curvature is negative, the object side is concave. For the image side of a lens, if the radius of curvature is positive, the image side is concave; conversely, if the radius of curvature is negative, the image side is convex.

In the embodiment of the present invention, the object side and image side of each lens can be spherical or aspherical surfaces. Using an aspherical surface on a lens helps to correct imaging aberrations of an optical photographic lens set such as spherical aberration, and reduces the number of optical lens elements used. However, the use of an aspherical lens will increase the cost of the entire optical photographic lens set. Although in the embodiment of the present invention, some optical lens surfaces use spherical surfaces, they can still be designed as aspherical surfaces as needed; or, some optical lens surfaces use aspherical surfaces, but they can still be designed as spherical surfaces as needed.

In the embodiment of the present invention, the total track length TTL (Total Track Length) of the optical imaging lens set is defined as the distance from the object side of the first lens of the optical imaging lens set to the imaging plane on the optical axis. The imaging height of the optical imaging lens set is called the maximum image height ImgH (Image Height); when an image sensing element is set on the imaging plane, the maximum image height ImgH represents half of the diagonal length of the effective sensing area of the image sensing element. In the following embodiments, the units of the curvature radius of all lenses, lens thickness, distance between lenses, total track length TTL of the lens set, maximum image height ImgH and focal length (Focal Length) are all expressed in millimeters (mm).

The present invention provides an optical photography lens set, which includes a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens, a sixth lens and a seventh lens in order from the object side to the image side; wherein at least two lenses among the first lens to the seventh lens are made of glass.

The first lens has negative refractive power, and its object side surface is convex, while its image side surface is concave, to meet the actual application requirements and help expand the light collection range of the optical photography lens set. Preferably, the material of the first lens is glass, which can be applied to environmental conditions with large temperature differences. In the embodiment of the present invention, the object side surface and/or the image side surface of the first lens are spherical surfaces to reduce manufacturing costs and facilitate processing.

The second lens has negative refractive power for adjusting the light path. Its object side and image side are both concave. Preferably, the material of the second lens is plastic to reduce manufacturing costs and facilitate processing. In addition, the object side and/or image side of the second lens can be aspherical to improve spherical aberration.

The third lens has positive refractive power, and its object side surface is convex, and its object side surface and image side surface are both convex. The positive refractive power of the third lens is used to help converge light and correct astigmatism. The spherical aberration of the optical photographic lens group can be effectively reduced by the light divergence effect formed by the negative refractive power of the second lens and the light convergence effect of the third lens with positive refractive power. In the embodiment of the present invention, the material of the third lens is glass, which can be applied to environmental conditions with large temperature differences. In addition, the object side surface and/or the image side surface of the third lens are aspherical surfaces to reduce manufacturing costs and facilitate processing.

The fourth lens has positive refractive power, and its object side and image side are both convex. In the embodiment of the present invention, the material of the fourth lens is plastic to reduce manufacturing costs and facilitate processing. In addition, the object side and/or image side of the fourth lens can be aspherical, which can make the light of the external field angle better converge at the required imaging height and meet the requirements of the image surface for the incident angle of the light.

The fifth lens has negative refractive power, and its object side and image side surfaces are both concave. The negative refractive power of the fifth lens is used to help adjust the light path. In the embodiment of the present invention, the material of the fifth lens is plastic to reduce manufacturing costs and facilitate processing. In addition, the object side surface and/or image side surface of the fifth lens can be aspherical to improve spherical aberration.

The sixth lens has positive refractive power, and its object side and image side surfaces are both convex. The positive refractive power of the sixth lens is used to help converge light and improve astigmatism. Preferably, the sixth lens is made of plastic to reduce manufacturing costs and facilitate processing. In addition, the object side surface and/or image side surface of the sixth lens can be aspherical to improve spherical aberration.

The seventh lens has positive refractive power, and its object side surface is convex, while its image side surface is concave. The positive refractive power of the seventh lens is used to converge light and adjust the light path. Preferably, the seventh lens is made of plastic to reduce manufacturing costs and facilitate processing. In addition, the object side surface and/or the image side surface of the seventh lens can be aspherical to improve spherical aberration.

The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the effective focal length of the optical camera lens set is EFL, which satisfies the following relationship: 0.012＜|(CT1-CT2)/EFL|＜0.071（1）.

When the relation (1) is satisfied, the thickness difference between the first lens and the second lens on the optical axis can be controlled, which helps to control the total length of the optical imaging lens set.

The effective focal length of the optical photographic lens set is EFL, and the radius of curvature of the image side surface of the seventh lens is R14, which satisfies the following relationship: 1.9＜R14/EFL＜4 (2).

When the relation (2) is satisfied, the radius of curvature of the image side surface of the seventh lens can be properly controlled, which is beneficial to reducing the field curvature aberration of the optical imaging lens group and correcting the chromatic aberration.

The distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the effective focal length of the optical photographic lens set is EFL, which satisfies the following relationship: 0.04＜|(AT34-AT23)/EFL| ＜0.24（3）.

When the relationship (3) is satisfied, the configuration of the second, third and fourth lenses can be balanced to control the lens length and increase the usage occasions.

The distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 1.5＜AT67*TTL＜3.4（4）.

When the relationship (4) is satisfied, the configuration of the sixth and seventh lenses can be balanced and the total length of the system can be effectively controlled.

The distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the combined focal length of the first lens, the second lens and the third lens is f123, which satisfies the following relationship: -8＜AT34*f123＜-4（5）.

When equation (5) is satisfied, the refractive power of the front lens group of the imaging lens set can be appropriately adjusted, and the configuration of the third and fourth lenses can be balanced.

The radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.4＜(R7-R8)/TTL＜0.6（6）.

When the relation (6) is satisfied, the radius of curvature of the fourth lens can be properly controlled, which is beneficial to reducing the field curvature aberration of the optical imaging lens group and correcting the chromatic aberration.

The focal length of the second lens is f2, the focal length of the seventh lens is f7, and the distance from the object side of the first lens to the imaging surface of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 1.3＜(f7-f2)/TTL＜1.7（7）.

When the relation (7) is satisfied, it helps to control the focal length of the second lens and the seventh lens to maintain an appropriate ratio with the total length of the system.

The focal length of the second lens is f2, the focal length of the sixth lens is f6, and the distance from the object side of the first lens to the imaging surface of the optical camera lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.3＜(f6-f2)/TTL＜0.5（8）.

When the relation (8) is satisfied, it helps to control the focal length of the second lens and the sixth lens to maintain an appropriate ratio with the total length of the system.

The radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens assembly on the optical axis is TTL, which satisfies the following relationship: 0.3＜(R11-R12)/TTL＜0.5（9）.

When the relation (9) is satisfied, the radius of curvature of the sixth lens can be properly controlled, which is beneficial to reducing the field curvature aberration of the optical imaging lens set and correcting the chromatic aberration.

The radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 0.4＜(R13+R14)/TTL＜0.9（10）.

When the relation (10) is satisfied, the radius of curvature of the seventh lens can be properly controlled, which is beneficial to reducing the field curvature aberration of the optical imaging lens set and correcting the chromatic aberration.

The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the effective focal length of the optical camera lens set is EFL, which satisfies the following relationship: 0.12＜(CT4+CT5)/EFL＜0.17（11）.

When the relation (11) is satisfied, the sum of the thicknesses of the fourth lens and the fifth lens on the optical axis can be controlled, which helps to control the total length of the optical imaging lens set.

The distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the effective focal length of the optical photographic lens set is EFL, which satisfies the following relationship: 0.12＜(AT34-AT67)/EFL＜0.32（12）.

When equation (12) is satisfied, the spatial arrangement of the third and fourth lenses and the sixth and seventh lenses can be balanced to avoid the relative spacing between them being too large.

The distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, which satisfies the following relationship: 0.026＜(AT34-AT23)*(AT34-AT67) ＜0.384（13）.

When equation (13) is satisfied, the spatial arrangement of the second, third and fourth lenses and the sixth and seventh lenses can be balanced to avoid the relative spacing between them being too large.

The distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, the thickness of the first lens on the optical axis is CT1, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: 0.007＜(AT34-AT67)*(CT1-CT2) ＜0.101 (14).

When the relation (14) is satisfied, it helps to control the total length of the optical imaging lens assembly, which is beneficial to the miniaturization of the lens assembly.

The refractive index of the first lens is Nd1, the refractive index of the third lens is Nd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 0.6＜R4/(Nd1*Nd3) ＜0.78（15）.

When the relationship (15) is satisfied, the flexibility of material usage can be increased, the lens material can be adjusted, and it helps to correct chromatic aberration and improve imaging quality.

The dispersion coefficient of the first lens is Vd1, the dispersion coefficient of the third lens is Vd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 435＜(Vd1*Vd3)/R4 ＜555（16）.

When the relationship (16) is satisfied, the flexibility of material usage can be increased to achieve better chromatic aberration balancing capability, and the material configuration of the first and third lenses can be balanced to facilitate chromatic aberration correction.

The combined focal length of the first lens, the second lens and the third lens is f123, and the combined focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens is f4567, which satisfies the following relationship: -2.3＜f123/f4567 ＜-1.8 (17).

When the relation (17) is satisfied, the refractive power of the front and rear lens groups of the imaging lens set can be properly distributed, so that the front lens group has an appropriate refractive power, avoiding excessive divergence of the light transmitted to the aperture, which would increase the burden of the positive refractive power of the rear lens group.

The radius of curvature of the object side surface of the sixth lens is R11, the radius of curvature of the image side surface of the sixth lens is R12, the radius of curvature of the object side surface of the seventh lens is R13, the radius of curvature of the image side surface of the seventh lens is R14, and the distance from the object side surface of the first lens to the imaging plane of the optical photographic lens assembly on the optical axis is TTL, which satisfies the following relationship: 3.2＜(R11-R12)*(R13+R14)/TTL＜5.4（18）.

When the relation (18) is satisfied, the radius of curvature of the sixth lens and the seventh lens can be properly controlled, which is beneficial to reducing the field curvature aberration of the optical imaging lens set and correcting the chromatic aberration.

The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, and the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, which satisfies the following relationship: 0.002＜(CT1-CT2)*(AT34-AT23) ＜0.075 (19).

When the relation (19) is satisfied, the lens distribution of the optical camera lens group can be adjusted, which helps to adjust the volume distribution and form a wide viewing angle configuration to improve the imaging quality. First Embodiment

Referring to FIG. 1A and FIG. 1B , FIG. 1A is a schematic diagram of an optical photographic lens assembly of the first embodiment of the present invention. FIG. 1B is, from left to right, a diagram of astigmatism/field curvature, a diagram of F-tanθ distortion, and a diagram of longitudinal spherical aberration of the first embodiment of the present invention.

As shown in FIG1A , the optical photographic lens set 10 of the first embodiment includes a first lens 11, a second lens 12, a third lens 13, an aperture ST, a fourth lens 14, a fifth lens 15, a sixth lens 16, and a seventh lens 17 in order from the object side to the image side. The optical photographic lens set 10 may further include a filter element 18 and an imaging surface 101. An image sensing element 102 may be further disposed on the imaging surface 101 to form an imaging device (not separately labeled).

The first lens 11 has negative refractive power, and its object side surface 11a is convex, and its image side surface 11b is concave, and both the object side surface 11a and the image side surface 11b are spherical. The material of the first lens 11 includes glass, but is not limited thereto.

The second lens 12 has negative refractive power, and its object side surface 12a is concave, and its image side surface 12b is concave, and both the object side surface 12a and the image side surface 12b are aspherical. The material of the second lens 12 includes plastic, but is not limited thereto.

The third lens 13 has positive refractive power, and its object side surface 13a is convex, its image side surface 13b is convex, and the object side surface 13a and the image side surface 13b are spherical surfaces. The material of the third lens 13 includes glass, but is not limited thereto.

The fourth lens 14 has positive refractive power, and its object side surface 14a is convex, and its image side surface 14b is convex, and both the object side surface 14a and the image side surface 14b are aspherical. The material of the fourth lens 14 includes plastic, but is not limited thereto.

The fifth lens 15 has negative refractive power, and its object side surface 15a is concave, and its image side surface 15b is concave, and both the object side surface 15a and the image side surface 15b are aspherical. The material of the fifth lens 15 includes plastic, but is not limited thereto.

The sixth lens 16 has positive refractive power, and its object side surface 16a is convex, and its image side surface 16b is convex, and both the object side surface 16a and the image side surface 16b are aspherical. The material of the sixth lens 16 includes plastic, but is not limited thereto.

The seventh lens 17 has positive refractive power, and its object side surface 17a is convex, and its image side surface 17b is concave, and both the object side surface 17a and the image side surface 17b are aspherical. The material of the seventh lens 17 includes plastic, but is not limited thereto.

The filter element 18 is disposed between the seventh lens 17 and the imaging surface 101 to filter light in a specific wavelength range, such as an infrared light filter element. The two surfaces 18a and 18b of the filter element 18 are both planes, and the material thereof is glass.

The image sensor 102 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The curve equations of the above-mentioned aspheric surfaces are expressed as follows: Where, X: the distance between the point on the aspheric surface at a distance Y from the optical axis and the tangent plane of the aspheric surface on the optical axis; Y: the perpendicular distance between the point on the aspheric surface and the optical axis; C: the reciprocal of the radius of curvature of the lens near the optical axis; K: the cone coefficient; and Ai: the i-th order aspheric coefficient, where i = 2x, and x is a natural number greater than or equal to 2, that is, i is an even number greater than or equal to 4.

Please refer to Table 1 below, which is the detailed optical data of the optical photographic lens set 10 of the first embodiment of the present invention. Among them, the object side surface 11a of the first lens 11 is marked as surface 11a, the image side surface 11b is marked as surface 11b, and the other lens surfaces are similar. The value of the distance column in the table represents the distance from the surface to the next surface on the optical axis I. For example, the distance from the object side surface 11a of the first lens 11 to the image side surface 11b is 0.600 mm, which means that the thickness of the first lens 11 is 0.600 mm. The distance AT12 from the image side surface 11b of the first lens 11 to the object side surface 12a of the second lens 12 is 2.495 mm. The same can be said for other cases, which will not be repeated below. In the first embodiment, the effective focal length of the optical camera lens set 10 is EFL, and the maximum half field of view angle of the entire optical camera lens set 10 is HFOV (Half Field of View), and its values are also listed in Table 1. First Embodiment TTL=16.96mm,EFL=2.22mm, HFOV=81° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Unlimited First lens 11a Spherical 11.099 0.600 1.804 46.6 -5.05 11b Spherical 2.911 2.495 Second lens 12a Aspheric -18.548 0.574 1.537 56.0 -3.33 12b Aspheric 2.004 0.374 Third lens 13a Spherical 3.617 2.302 1.847 23.8 3.63 13b Spherical -15.228 0.458 aperture ST Unlimited 0.012 Fourth lens 14a Aspheric 5.130 1.619 1.537 56.0 3.20 14b Aspheric -2.306 0.168 Fifth lens 15a Aspheric -1.799 0.556 1.64 23.5 -2.06 15b Aspheric 5.718 0.170 Sixth lens 16a Aspheric 2.934 2.152 1.537 56.0 3.41 16b Aspheric -3.646 0.200 Seventh lens 17a Aspheric 5.051 1.461 1.537 56.0 19.55 17b Aspheric 8.727 0.500 Filter elements 18a flat Unlimited 0.300 1.517 64.2 18b flat Unlimited 2.419 Imaging surface 101 flat Unlimited 0.000 Reference wavelength: 555nm Table 1

Please refer to Table 2 below, which is the aspheric coefficient of each lens surface of the first embodiment of the present invention. Among them, K is the cone coefficient in the aspheric curve equation, and _A4 to _A16 represent the 4th to 16th order aspheric coefficients of each surface. For example, the cone coefficient K of the object side surface 12a of the second lens 12 is -3.15. The same can be said for the rest, and will not be repeated below. In addition, the tables of the following embodiments correspond to the optical photography lens set of each embodiment, and the definitions of each table are the same as those of this embodiment, so they will not be repeated in the following embodiments. Aspheric coefficient of the first embodiment 12a 12b 14a 14b 15a 15b 16a 16b K 1.86E+01 -1.41E+00 1.70E+00 -4.93E+00 -2.39E+00 -9.02E+01 -1.72E+01 4.12E-01 A4 -3.19E-03 6.04E-03 -4.20E-03 -5.41E-02 -2.67E-02 -7.12E-03 -8.05E-04 7.22E-03 A6 -3.94E-04 -3.18E-03 -1.21E-02 -1.40E-02 -2.02E-02 3.91E-03 -7.07E-04 2.83E-04 A8 1.50E-04 9.22E-04 5.53E-03 1.35E-03 6.07E-03 -5.73E-04 2.68E-04 -1.04E-04 A10 -6.20E-06 -9.17E-05 4.56E-03 9.60E-04 5.67E-04 3.14E-04 -2.23E-05 1.67E-05 A12 -4.50E-06 -1.28E-05 -6.02E-03 -1.31E-04 -6.05E-04 -1.39E-04 0.00E+00 0.00E+00 A14 8.80E-07 4.68E-06 -9.28E-03 -2.87E-04 1.02E-04 2.53E-05 0.00E+00 0.00E+00 A16 -5.27E-08 -5.22E-07 7.89E-03 1.05E-04 2.67E-05 -1.83E-06 0.00E+00 0.00E+00 Aspheric coefficient of the first embodiment 17a 17b K -3.37E+00 -2.36E+01 A4 -9.39E-04 -2.30E-03 A6 -4.59E-05 2.02E-05 A8 7.23E-06 -4.39E-06 A10 -2.05E-07 1.79E-07 A12 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 Table 2

In the first embodiment, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the effective focal length of the optical camera lens set is EFL, |(CT1-CT2)/EFL|= 0.012.

In the first embodiment, the radius of curvature of the image side surface of the seventh lens is R14, R14/EFL = 3.93.

In the first embodiment, the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the effective focal length of the optical imaging lens set is EFL, |(AT34-AT23)/EFL|= 0.043.

In the first embodiment, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, the distance from the object side of the first lens to the imaging plane of the optical photography lens assembly on the optical axis is TTL, AT67*TTL=3.39.

In the first embodiment, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the combined focal length of the first lens, the second lens and the third lens is f123, AT34*f123= -4.04.

In the first embodiment, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, the distance from the object side of the first lens to the imaging plane of the optical photography lens assembly on the optical axis is TTL, (R7-R8)/TTL=0.438.

In the first embodiment, the focal length of the first lens is f2, the focal length of the seventh lens is f7, and the distance from the object side of the first lens to the imaging surface of the optical camera lens set on the optical axis is TTL, (f7-f2)/TTL= 1.349.

In the first embodiment, the focal length of the second lens is f2, the focal length of the sixth lens is f6, and the distance from the object side of the first lens to the imaging surface of the optical camera lens set on the optical axis is TTL, (f6-f2)/TTL= 0.397.

In the first embodiment, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, the distance from the object side of the first lens to the imaging plane of the optical photography lens assembly on the optical axis is TTL, (R11-R12)/TTL=0.388.

In the first embodiment, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the distance from the object side of the first lens to the imaging plane of the optical camera lens set on the optical axis is TTL, (R13+R14)/TTL= 0.812.

In the first embodiment, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, the effective focal length of the optical camera lens set is EFL, (CT4+CT5)/EFL=0.980.

In the first embodiment, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the effective focal length of the optical photography lens set is EFL, (AT34-AT67)/EFL=0.121.

In the first embodiment, the distance from the second lens image side to the third lens object side on the optical axis is AT23, the distance from the third lens image side to the fourth lens object side on the optical axis is AT34, and the distance from the sixth lens image side to the seventh lens object side on the optical axis is AT67, (AT34-AT23)*(AT34-AT67)= 0.026.

In the first embodiment, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, (AT34-AT67)*(CT1-CT2)= 0.007.

In the first embodiment, the refractive index of the first lens is Nd1, the refractive index of the third lens is Nd3, the radius of curvature of the image side surface of the second lens is R4, and R4/(Nd1*Nd3)=0.601.

In the first embodiment, the dispersion coefficient of the first lens is Vd1, the dispersion coefficient of the third lens is Vd3, the curvature radius of the image side surface of the second lens is R4, (Vd1*Vd3)/R4=552.657.

In the first embodiment, the combined focal length of the first lens, the second lens and the third lens is f123, the combined focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens is f4567, and f123/f4567 = -1.99.

In the first embodiment, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, the distance from the object side of the first lens to the imaging plane of the optical photography lens assembly on the optical axis is TTL, (R11-R12)*(R13+R14)/TTL=5.35.

In the first embodiment, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, (CT1-CT2)*(AT34-AT23) = 0.0025.

From the numerical values of the above relationship, it can be seen that the optical photographic lens assembly 10 of the first embodiment meets the requirements of relationship (1) to (19).

See FIG. 1B , which shows, from left to right, the astigmatism field curvature aberration diagram, the F-tanθ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 10. From the astigmatism field curvature aberration diagram (wavelength 555 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.1 mm within the entire field of view; the variation of the aberration in the meridional direction is within + 0.1 mm within the entire field of view. From the F-tanθ distortion aberration diagram (wavelength 555 nm), it can be seen that the absolute value of the F-tanθ distortion rate of the optical photographic lens set 10 is less than 80%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of the three visible light wavelengths of 435 nm, 555 nm, and 650 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled within + 0.03 mm. As shown in FIG. 1B , the optical camera lens assembly 10 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Second Embodiment

Referring to FIG. 2A and FIG. 2B , FIG. 2A is a schematic diagram of an optical photographic lens assembly of the second embodiment of the present invention. FIG. 2B is, from left to right, a diagram of astigmatism/field curvature, a diagram of F-tanθ distortion, and a diagram of longitudinal spherical aberration of the second embodiment of the present invention.

As shown in FIG2A , the optical imaging lens set 20 of the second embodiment includes a first lens 21, a second lens 22, a third lens 23, an aperture ST, a fourth lens 24, a fifth lens 25, a sixth lens 26, and a seventh lens 27 in order from the object side to the image side. The optical imaging lens set 20 may further include a filter element 28 and an imaging surface 201. An image sensing element 202 may be further disposed on the imaging surface 201 to form an imaging device (not separately labeled).

The first lens 21 has negative refractive power, and its object side surface 21a is convex, and its image side surface 21b is concave, and both the object side surface 21a and the image side surface 21b are spherical. The material of the first lens 21 includes glass, but is not limited thereto.

The second lens 22 has negative refractive power, and its object side surface 22a is concave, and its image side surface 22b is concave, and both the object side surface 22a and the image side surface 22b are aspherical. The material of the second lens 22 includes plastic, but is not limited thereto.

The third lens 23 has positive refractive power, and its object side surface 23a is convex, its image side surface 23b is convex, and the object side surface 23a and the image side surface 23b are spherical surfaces. The material of the third lens 23 includes glass, but is not limited thereto.

The fourth lens 24 has positive refractive power, and its object side surface 24a is convex, and its image side surface 24b is convex, and both the object side surface 24a and the image side surface 24b are aspherical. The material of the fourth lens 24 includes plastic, but is not limited thereto.

The fifth lens 25 has negative refractive power, and its object side surface 25a is concave, and its image side surface 25b is concave, and both the object side surface 25a and the image side surface 25b are aspherical. The material of the fifth lens 25 includes plastic, but is not limited thereto.

The sixth lens 26 has positive refractive power, and its object side surface 26a is convex, and its image side surface 26b is convex, and both the object side surface 26a and the image side surface 26b are aspherical. The material of the sixth lens 26 includes plastic, but is not limited thereto.

The seventh lens 27 has positive refractive power, and its object side surface 27a is convex, and its image side surface 27b is concave, and both the object side surface 27a and the image side surface 27b are aspherical. The material of the seventh lens 27 includes plastic, but is not limited thereto.

The filter element 28 is disposed between the seventh lens 27 and the imaging surface 201 to filter light in a specific wavelength range, such as an infrared light filter element. The two surfaces 28a and 28b of the filter element 28 are both planes, and the material thereof is glass.

The image sensor 202 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 20 of the second embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 3 and Table 4. In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Second Embodiment TTL=17.1mm,EFL=2.26mm, HFOV=80.4° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Unlimited First lens 21a Spherical 11.008 0.600 1.835 42.7 -4.9 21b Spherical 2.923 2.400 Second lens 22a Aspheric -16.927 0.441 1.537 56.0 -3.8 22b Aspheric 2.348 0.343 Third lens 23a Spherical 4.120 2.463 1.847 23.8 4.1 23b Spherical -16.139 0.551 aperture ST flat Unlimited 0.084 Fourth lens 24a Aspheric 4.806 1.741 1.537 56.0 3.4 24b Aspheric -2.640 0.174 Fifth lens 25a Aspheric -2.011 0.499 1.64 23.5 -2.3 25b Aspheric 5.933 0.152 Sixth lens 26a Aspheric 3.298 2.179 1.537 56.0 3.5 26b Aspheric -3.444 0.157 Seventh lens 27a Aspheric 4.235 1.446 1.537 56.0 22.2 27b Aspheric 5.772 0.500 Filter elements 28a flat Unlimited 0.300 1.517 64.2 28b flat Unlimited 2.465 Imaging surface 201 flat Unlimited 0.000 Reference wavelength: 555nm Table 3 Aspheric coefficient of the second embodiment 22a 22b 24a 24b 25a 25b 26a 26b K 1.20E+01 -1.46E+00 -5.73E-01 -7.76E+00 -3.27E+00 -4.25E+01 -1.56E+01 -3.56E-01 A4 -4.66E-03 1.32E-03 -3.01E-03 -3.87E-02 -1.00E-02 -1.03E-02 1.54E-03 7.94E-03 A6 3.35E-04 -1.98E-03 -2.74E-03 -4.50E-03 -2.26E-02 3.75E-03 -1.39E-03 -2.03E-04 A8 2.04E-05 8.39E-04 -9.13E-04 -3.48E-03 6.94E-03 -4.72E-04 2.78E-04 -9.38E-05 A10 -7.87E-06 -1.59E-04 6.11E-04 4.99E-04 5.38E-04 2.64E-04 -1.57E-05 1.19E-05 A12 -8.96E-07 -5.29E-06 6.55E-05 9.50E-04 -1.01E-03 -1.06E-04 0.00E+00 0.00E+00 A14 3.41E-07 5.90E-06 -6.44E-04 -3.99E-04 3.07E-04 1.90E-05 0.00E+00 0.00E+00 A16 -2.24E-08 -5.52E-07 9.87E-05 4.00E-05 -2.51E-05 -1.28E-06 0.00E+00 0.00E+00 Aspheric coefficient of the second embodiment 27a 27b K -1.99E+00 -1.56E+01 A4 -3.48E-03 -3.01E-03 A6 -1.82E-04 -9.44E-05 A8 3.54E-05 1.61E-05 A10 -1.45E-06 -8.82E-07 A12 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 Table 4

In the second embodiment, the values of the various relational expressions of the optical photographic lens set 20 are listed in Table 5. As can be seen from Table 5, the optical photographic lens set 20 of the second embodiment meets the requirements of relational expressions (1) to (19). Second Embodiment No. Relational Numerical value 1 |(CT1-CT2)/EFL| 0.070 2 R14/EFL 2.55 3 |(AT34-AT23)/EFL| 0.129 4 AT67*TTL 2.68 5 AT34*f123 -4.79 6 (R7-R8)/TTL 0.435 7 (f7-f2)/TTL 1.521 8 (f6-f2)/TTL 0.428 9 (R11-R12)/TTL 0.394 10 (R13+R14)/TTL 0.585 11 (CT4+CT5)/EFL 0.991 12 (AT34-AT67)/EFL 0.211 13 (AT34-AT23)*(AT34-AT67) 0.139 14 (AT34-AT67)*(CT1-CT2) 0.076 15 R4/(nd1*nd3) 0.693 16 (Vd1*Vd3)/R4 432.760 17 f123/f4567 -1.76 18 (R11-R12)*(R13+R14)/TTL 3.95 19 (CT1-CT2)*(AT34-AT23) 0.0463 Table 5

See FIG. 2B , which shows, from left to right, the astigmatism field curvature aberration diagram, the F-tanθ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 20. From the astigmatism field curvature aberration diagram (wavelength 555 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.1 mm within the entire field of view; the variation of the aberration in the meridional direction is within + 0.1 mm within the entire field of view. From the F-tanθ distortion aberration diagram (wavelength 555 nm), it can be seen that the absolute value of the F-tanθ distortion rate of the optical photographic lens set 20 is less than 80%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of the three visible light wavelengths of 435 nm, 555 nm, and 650 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled within + 0.03 mm. As shown in FIG. 2B , the optical camera lens assembly 20 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Third Embodiment

Referring to FIG. 3A and FIG. 3B , FIG. 3A is a schematic diagram of an optical photographic lens assembly of the third embodiment of the present invention. FIG. 3B is, from left to right, a diagram of astigmatism/field curvature, a diagram of F-tanθ distortion, and a diagram of longitudinal spherical aberration of the third embodiment of the present invention.

As shown in FIG3A , the optical imaging lens set 30 of the third embodiment includes a first lens 31, a second lens 32, a third lens 33, an aperture ST, a fourth lens 34, a fifth lens 35, a sixth lens 36, and a seventh lens 37 in order from the object side to the image side. The optical imaging lens set 30 may further include a filter element 38 and an imaging surface 301. An image sensing element 302 may be further disposed on the imaging surface 301 to form an imaging device (not labeled).

The first lens 31 has negative refractive power, and its object side surface 31a is convex, and its image side surface 31b is concave, and both the object side surface 31a and the image side surface 31b are spherical. The material of the first lens 31 includes glass, but is not limited thereto.

The second lens 32 has negative refractive power, and its object side surface 32a is concave, and its image side surface 32b is concave, and both the object side surface 32a and the image side surface 32b are aspherical. The material of the second lens 32 includes plastic, but is not limited thereto.

The third lens 33 has positive refractive power, and its object side surface 33a is convex, its image side surface 33b is convex, and the object side surface 33a and the image side surface 33b are spherical surfaces. The material of the third lens 33 includes glass, but is not limited thereto.

The fourth lens 34 has positive refractive power, and its object side surface 34a is convex, and its image side surface 34b is convex, and both the object side surface 34a and the image side surface 34b are aspherical. The material of the fourth lens 34 includes plastic, but is not limited thereto.

The fifth lens 35 has negative refractive power, and its object side surface 35a is concave, and its image side surface 35b is concave, and both the object side surface 35a and the image side surface 35b are aspherical. The material of the fifth lens 35 includes plastic, but is not limited thereto.

The sixth lens 36 has positive refractive power, and its object side surface 36a is convex, and its image side surface 36b is convex, and both the object side surface 36a and the image side surface 36b are aspherical. The material of the sixth lens 36 includes plastic, but is not limited thereto.

The seventh lens 37 has positive refractive power, and its object side surface 37a is convex, and its image side surface 37b is concave, and both the object side surface 37a and the image side surface 37b are aspherical. The material of the seventh lens 37 includes plastic, but is not limited thereto.

The filter element 38 is disposed between the seventh lens 37 and the imaging surface 301 to filter light in a specific wavelength range, such as an infrared light filter element. The two surfaces 38a and 38b of the filter element 38 are both planes, and the material thereof is glass.

The image sensor 302 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 30 of the third embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 6 and Table 7. In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Third Embodiment TTL=17.13mm,EFL=2.27mm, HFOV=79.5° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Unlimited First lens 31a Spherical 11.839 0.600 1.804 46.6 -4.72 31b Spherical 2.818 2.286 Second lens 32a Aspheric -22.607 0.459 1.537 56.0 -4.21 32b Aspheric 2.534 0.280 Third lens 33a Spherical 4.092 2.494 1.847 23.8 4.00 33b Spherical -14.822 0.592 aperture ST Unlimited 0.199 Fourth lens 34a Aspheric 6.817 1.584 1.537 56.0 3.53 34b Aspheric -2.421 0.154 Fifth lens 35a Aspheric -2.019 0.434 1.64 23.5 -2.35 35b Aspheric 6.609 0.172 Sixth lens 36a Aspheric 3.638 2.410 1.537 56.0 3.69 36b Aspheric -3.351 0.094 Seventh lens 37a Aspheric 3.618 1.402 1.537 56.0 23.65 37b Aspheric 4.368 0.500 Filter elements 38a flat Unlimited 0.300 1.517 64.2 38b flat Unlimited 2.569 Imaging surface 301 flat Unlimited 0 Reference wavelength: 555nm Table 6 Aspheric coefficient of the third embodiment 32a 32b 34a 34b 35a 35b 36a 36b K -1.77E+01 -1.82E+00 -6.69E+00 -6.53E+00 -3.59E+00 -2.27E+01 -1.58E+01 2.18E-01 A4 -4.65E-03 3.04E-03 -7.74E-03 -4.24E-02 -2.90E-03 -5.99E-03 2.15E-03 4.91E-03 A6 3.65E-04 -1.60E-03 -1.32E-03 -1.46E-03 -1.91E-02 3.13E-03 -1.83E-03 -4.78E-05 A8 4.09E-05 7.61E-04 -3.40E-03 -1.08E-03 8.08E-03 -6.24E-04 3.40E-04 5.32E-06 A10 -1.49E-05 -1.56E-04 3.34E-04 4.30E-04 5.27E-04 3.45E-04 -1.36E-05 3.23E-06 A12 -1.71E-06 -1.34E-05 8.99E-04 3.82E-04 -1.10E-03 -1.10E-04 1.41E-06 -5.49E-07 A14 7.55E-07 8.99E-06 -1.12E-03 -2.97E-04 2.17E-04 1.29E-05 -3.74E-07 -2.51E-09 A16 -5.66E-08 -8.76E-07 2.92E-04 4.33E-05 -9.09E-06 -4.64E-07 1.49E-08 2.12E-08 Aspheric coefficient of the third embodiment 37a 37b K -2.73E+00 -4.44E+00 A4 -3.62E-03 -6.53E-03 A6 -2.75E-04 7.57E-05 A8 3.31E-05 1.03E-05 A10 -6.32E-07 -6.64E-07 A12 -5.66E-09 0.00E+00 A14 -3.56E-09 0.00E+00 A16 2.55E-10 0.00E+00 Table 7

In the third embodiment, the values of the various relational expressions of the optical imaging lens set 30 are listed in Table 8. As can be seen from Table 8, the optical imaging lens set 30 of the third embodiment meets the requirements of relational expressions (1) to (19). Third Embodiment No. Relational Numerical value 1 |(CT1-CT2)/EFL| 0.062 2 R14/EFL 1.924 3 |(AT34-AT23)/EFL| 0.225 4 AT67*TTL 1.603 5 AT34*f123 -7.559 6 (R7-R8)/TTL 0.539 7 (f7-f2)/TTL 1.626 8 (f6-f2)/TTL 0.461 9 (R11-R12)/TTL 0.408 10 (R13+R14)/TTL 0.466 11 (CT4+CT5)/EFL 0.889 12 (AT34-AT67)/EFL 0.308 13 (AT34-AT23)*(AT34-AT67) 0.357 14 (AT34-AT67)*(CT1-CT2) 0.098 15 R4/(nd1*nd3) 0.760 16 (Vd1*Vd3)/R4 437.062 17 f123/f4567 -2.234 18 (R11-R12)*(R13+R14)/TTL 3.259 19 (CT1-CT2)*(AT34-AT23) 0.072 Table 8

See FIG. 3B , which shows, from left to right, the astigmatism field curvature aberration diagram, the F-tanθ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 30. From the astigmatism field curvature aberration diagram (wavelength 555 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.05 mm within the entire field of view; the variation of the aberration in the meridional direction is within + 0.05 mm within the entire field of view. From the F-tanθ distortion aberration diagram (wavelength 555 nm), it can be seen that the absolute value of the F-tanθ distortion rate of the optical photographic lens set 30 is less than 80%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of the three visible light wavelengths of 435 nm, 555 nm, and 650 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled within + 0.03 mm. As shown in FIG. 3B , the optical camera lens assembly 30 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Fourth Embodiment

4A and 4B, FIG4A is a schematic diagram of an optical photographic lens assembly of the fourth embodiment of the present invention. FIG4B is, from left to right, an astigmatism/field curvature aberration diagram, a F-tanθ distortion diagram, and a longitudinal spherical aberration diagram of the fourth embodiment of the present invention.

As shown in FIG4A , the optical imaging lens set 40 of the fourth embodiment includes a first lens 41, a second lens 42, a third lens 43, an aperture ST, a fourth lens 44, a fifth lens 45, a sixth lens 46, and a seventh lens 47 in order from the object side to the image side. The optical imaging lens set 40 may further include a filter element 48 and an imaging surface 401. An image sensing element 402 may be further disposed on the imaging surface 401 to form an imaging device (not separately labeled).

The first lens 41 has negative refractive power, and its object side surface 41a is convex, and its image side surface 41b is concave, and both the object side surface 41a and the image side surface 41b are spherical. The material of the first lens 41 includes glass, but is not limited thereto.

The second lens 42 has negative refractive power, and its object side surface 42a is concave, and its image side surface 42b is concave, and both the object side surface 42a and the image side surface 42b are aspherical. The material of the second lens 42 includes plastic, but is not limited thereto.

The third lens 43 has positive refractive power, and its object side surface 43a is convex, its image side surface 43b is convex, and the object side surface 43a and the image side surface 43b are spherical surfaces. The material of the third lens 43 includes glass, but is not limited thereto.

The fourth lens 44 has positive refractive power, and its object side surface 44a is convex, and its image side surface 44b is convex, and both the object side surface 44a and the image side surface 44b are aspherical. The material of the fourth lens 44 includes plastic, but is not limited thereto.

The fifth lens 45 has negative refractive power, and its object side surface 45a is concave, and its image side surface 45b is concave, and both the object side surface 45a and the image side surface 45b are aspherical. The material of the fifth lens 45 includes plastic, but is not limited thereto.

The sixth lens 46 has positive refractive power, and its object side surface 46a is convex, and its image side surface 46b is convex, and both the object side surface 46a and the image side surface 46b are aspherical. The material of the sixth lens 46 includes plastic, but is not limited thereto.

The seventh lens 47 has positive refractive power, and its object side surface 47a is convex, and its image side surface 47b is concave, and both the object side surface 47a and the image side surface 47b are aspherical. The material of the seventh lens 47 includes plastic, but is not limited thereto.

The filter element 48 is disposed between the seventh lens 47 and the imaging surface 401 to filter light in a specific wavelength range, such as an infrared light filter element. The two surfaces 48a and 48b of the filter element 48 are both planes, and the material thereof is plastic.

The image sensor 404 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 40 of the fourth embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 9 and Table 10. In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Fourth embodiment TTL=17.1mm,EFL=2.25mm,HFOV=79.95° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Unlimited First lens 41a Spherical 11.839 0.600 1.804 46.57 -4.72 41b Spherical 2.818 2.286 Second lens 42a Aspheric -22.607 0.459 1.537 55.98 -4.21 42b Aspheric 2.534 0.280 Third lens 43a Spherical 3.885 2.494 1.805 25.46 4.00 43b Spherical -14.033 0.592 aperture ST Unlimited 0.199 Fourth lens 44a Aspheric 6.817 1.584 1.537 55.98 3.53 44b Aspheric -2.421 0.154 Fifth lens 45a Aspheric -2.019 0.434 1.64 23.5 -2.35 45b Aspheric 6.609 0.172 Sixth lens 46a Aspheric 3.638 2.410 1.537 55.98 3.69 46b Aspheric -3.351 0.094 Seventh lens 47a Aspheric 3.618 1.402 1.537 55.98 23.65 47b Aspheric 4.368 0.500 Filter elements 48a flat Unlimited 0.300 1.517 64.2 48b flat Unlimited 2.539 Imaging surface 401 flat Unlimited 0.000 Reference wavelength: 555nm Table 9 Aspheric coefficient of the fourth embodiment 42a 42b 44a 44b 45a 45b 46a 46b K -1.77E+01 -1.82E+00 -6.69E+00 -6.53E+00 -3.59E+00 -2.27E+01 -1.58E+01 2.18E-01 A4 -4.65E-03 3.04E-03 -7.74E-03 -4.24E-02 -2.90E-03 -5.99E-03 2.15E-03 4.91E-03 A6 3.65E-04 -1.60E-03 -1.32E-03 -1.46E-03 -1.91E-02 3.13E-03 -1.83E-03 -4.78E-05 A8 4.09E-05 7.61E-04 -3.40E-03 -1.08E-03 8.08E-03 -6.24E-04 3.40E-04 5.32E-06 A10 -1.49E-05 -1.56E-04 3.34E-04 4.30E-04 5.27E-04 3.45E-04 -1.36E-05 3.23E-06 A12 -1.71E-06 -1.34E-05 8.99E-04 3.82E-04 -1.10E-03 -1.10E-04 1.41E-06 -5.49E-07 A14 7.55E-07 8.99E-06 -1.12E-03 -2.97E-04 2.17E-04 1.29E-05 -3.74E-07 -2.51E-09 A16 -5.66E-08 -8.76E-07 2.92E-04 4.33E-05 -9.09E-06 -4.64E-07 1.49E-08 2.12E-08 Aspheric coefficient of the fourth embodiment 47a 47b K -2.73E+00 -4.44E+00 A4 -3.62E-03 -6.53E-03 A6 -2.75E-04 7.57E-05 A8 3.31E-05 1.03E-05 A10 -6.32E-07 -6.64E-07 A12 -5.66E-09 0.00E+00 A14 -3.56E-09 0.00E+00 A16 2.55E-10 0.00E+00 Table 10

In the fourth embodiment, the values of the relational expressions of the optical photographic lens set 40 are listed in Table 11. As can be seen from Table 11, the optical photographic lens set 40 of the fourth embodiment meets the requirements of relational expressions (1) to (19). Fourth embodiment No. Relational Numerical value 1 |(CT1-CT2)/EFL| 0.063 2 R14/EFL 1.942 3 |(AT34-AT23)/EFL| 0.227 4 AT67*TTL 1.600 5 AT34*f123 -7.648 6 (R7-R8)/TTL 0.540 7 (f7-f2)/TTL 1.629 8 (f6-f2)/TTL 0.461 9 (R11-R12)/TTL 0.409 10 (R13+R14)/TTL 0.467 11 (CT4+CT5)/EFL 0.897 12 (AT34-AT67)/EFL 0.310 13 (AT34-AT23)*(AT34-AT67) 0.357 14 (AT34-AT67)*(CT1-CT2) 0.098 15 R4/(nd1*nd3) 0.778 16 (Vd1*Vd3)/R4 467.939 17 f123/f4567 -2.261 18 (R11-R12)*(R13+R14)/TTL 3.264 19 (CT1-CT2)*(AT34-AT23) 0.072 Table 11

See FIG. 4B , which shows, from left to right, the astigmatism field curvature aberration diagram, the F-tanθ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 40. From the astigmatism field curvature aberration diagram (wavelength 555 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.3 mm within the entire field of view; and the variation of the aberration in the meridional direction is within + 0.03 mm within the entire field of view. From the F-tanθ distortion aberration diagram (wavelength 555 nm), it can be seen that the absolute value of the F-tanθ distortion rate of the optical photographic lens set 40 is less than 80%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of the three visible light wavelengths of 435 nm, 555 nm, and 650 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled within + 0.03 mm. As shown in FIG. 4B , the optical camera lens assembly 40 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Fifth Embodiment

Referring to FIG. 5A and FIG. 5B , FIG. 5A is a diagram showing astigmatism/Field Curvature, F-tanθ distortion, and longitudinal spherical aberration of the fifth embodiment of the present invention.

As shown in FIG5A , the optical imaging lens set 50 of the fifth embodiment includes, from the object side to the image side, a first lens 51, a second lens 52, a third lens 53, an aperture ST, a fourth lens 54, a fifth lens 55, a sixth lens 56, and a seventh lens 57. The optical imaging lens set 50 may further include a filter element 58 and an imaging surface 501. An image sensing element 502 may be further disposed on the imaging surface 501 to form an imaging device (not labeled).

The first lens 51 has negative refractive power, and its object side surface 51a is convex, and its image side surface 51b is concave, and both the object side surface 51a and the image side surface 51b are spherical. The material of the first lens 51 includes glass, but is not limited thereto.

The second lens 52 has negative refractive power, and its object side surface 52a is concave, and its image side surface 52b is concave, and both the object side surface 52a and the image side surface 52b are aspherical. The material of the second lens 52 includes plastic, but is not limited thereto.

The third lens 53 has positive refractive power, and its object side surface 53a is convex, and its image side surface 53b is convex, and the object side surface 53a and the image side surface 53b are spherical surfaces. The material of the third lens 53 includes glass, but is not limited thereto.

The fourth lens 54 has positive refractive power, and its object side surface 54a is convex, and its image side surface 54b is convex, and both the object side surface 54a and the image side surface 54b are aspherical. The material of the fourth lens 54 includes plastic, but is not limited thereto.

The fifth lens 55 has negative refractive power, and its object side surface 55a is concave, and its image side surface 55b is concave, and both the object side surface 55a and the image side surface 55b are aspherical. The material of the fifth lens 55 includes plastic, but is not limited thereto.

The sixth lens 56 has positive refractive power, and its object side surface 56a is convex, and its image side surface 56b is convex, and both the object side surface 56a and the image side surface 56b are aspherical. The material of the sixth lens 56 includes plastic, but is not limited thereto.

The seventh lens 57 has positive refractive power, and its object side surface 57a is convex, and its image side surface 57b is concave, and both the object side surface 57a and the image side surface 57b are aspherical. The material of the seventh lens 57 includes plastic, but is not limited thereto.

The filter element 58 is disposed between the seventh lens 57 and the imaging surface 501 to filter light in a specific wavelength range, such as an infrared light filter element. The two surfaces 58a and 58b of the filter element 58 are both planes, and the material thereof is plastic.

The image sensor 505 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 50 of the fifth embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 12 and Table 13. In the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Fifth embodiment TTL=17.12mm,EFL=2.27mm, HFOV=79.5° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Unlimited First lens 51a Spherical 11.792 0.600 1.804 46.6 -4.73 51b Spherical 2.818 2.284 Second lens 52a Aspheric -22.619 0.461 1.537 56.0 -4.21 52b Aspheric 2.534 0.280 Third lens 53a Spherical 4.092 2.489 1.847 23.8 4.00 53b Spherical -14.821 0.604 aperture ST Unlimited 0.209 Fourth lens 54a Aspheric 6.817 1.559 1.537 56.0 3.53 54b Aspheric -2.421 0.154 Fifth lens 55a Aspheric -2.019 0.426 1.64 23.5 -2.36 55b Aspheric 6.610 0.170 Sixth lens 56a Aspheric 3.638 2.438 1.537 56.0 3.69 56b Aspheric -3.351 0.093 Seventh lens 57a Aspheric 3.618 1.401 1.537 56.0 23.61 57b Aspheric 4.371 0.500 Filter elements 58a flat Unlimited 0.300 1.517 64.2 58b flat Unlimited 2.550 Imaging surface 501 flat Unlimited 0 Reference wavelength: 555nm Table 12 Aspheric coefficient of the fifth embodiment 52a 52b 54a 54b 55a 55b 56a 56b K -1.87E+01 -1.82E+00 -6.75E+00 -6.54E+00 -3.59E+00 -2.27E+01 -1.58E+01 2.20E-01 A4 -4.64E-03 3.10E-03 -7.76E-03 -4.24E-02 -2.91E-03 -5.99E-03 2.16E-03 4.90E-03 A6 3.68E-04 -1.57E-03 -1.34E-03 -1.44E-03 -1.91E-02 3.13E-03 -1.83E-03 -5.11E-05 A8 4.08E-05 7.61E-04 -3.39E-03 -1.08E-03 8.11E-03 -6.17E-04 3.40E-04 5.78E-06 A10 -1.51E-05 -1.56E-04 3.74E-04 4.33E-04 5.39E-04 3.46E-04 -1.32E-05 3.27E-06 A12 -1.77E-06 -1.41E-05 9.35E-04 3.83E-04 -1.09E-03 -1.10E-04 1.47E-06 -5.52E-07 A14 7.51E-07 8.92E-06 -1.13E-03 -2.93E-04 2.17E-04 1.29E-05 -3.78E-07 -2.64E-09 A16 -5.49E-08 -8.40E-07 2.58E-04 4.24E-05 -8.45E-06 -4.93E-07 1.33E-08 2.06E-08 Aspheric coefficient of the fifth embodiment 57a 57b K -2.72E+00 -4.49E+00 A4 -3.61E-03 -6.46E-03 A6 -2.74E-04 8.03E-05 A8 3.30E-05 1.02E-05 A10 -6.16E-07 -6.68E-07 A12 -4.85E-09 0.00E+00 A14 -3.52E-09 0.00E+00 A16 2.49E-10 0.00E+00 Table 13

In the fifth embodiment, the values of the relations of the optical imaging lens set 50 are listed in Table 14. As can be seen from Table 14, the optical imaging lens set 50 of the fifth embodiment meets the requirements of relations (1) to (19). Fifth embodiment No. Relational Numerical value 1 |(CT1-CT2)/EFL| 0.061 2 R14/EFL 1.926 3 |(AT34-AT23)/EFL| 0.235 4 AT67*TTL 1.588 5 AT34*f123 -7.772 6 (R7-R8)/TTL 0.540 7 (f7-f2)/TTL 1.625 8 (f6-f2)/TTL 0.461 9 (R11-R12)/TTL 0.408 10 (R13+R14)/TTL 0.467 11 (CT4+CT5)/EFL 0.875 12 (AT34-AT67)/EFL 0.317 13 (AT34-AT23)*(AT34-AT67) 0.383 14 (AT34-AT67)*(CT1-CT2) 0.100 15 R4/(nd1*nd3) 0.760 16 (Vd1*Vd3)/R4 437.051 17 f123/f4567 -2.239 18 (R11-R12)*(R13+R14)/TTL 3.261 19 (CT1-CT2)*(AT34-AT23) 0.074 Table 14

See FIG. 5B , which shows, from left to right, the astigmatism field curvature aberration diagram, the F-tanθ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 50. From the astigmatism field curvature aberration diagram (wavelength 555 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.03 mm within the entire field of view; the variation of the aberration in the meridional direction is within + 0.03 mm within the entire field of view. From the F-tanθ distortion aberration diagram (wavelength 555 nm), it can be seen that the absolute value of the F-tanθ distortion rate of the optical photographic lens set 50 is less than 80%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of the three visible light wavelengths of 435 nm, 555 nm, and 650 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled within + 0.05 mm. As shown in FIG. 5B , the optical camera lens assembly 50 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Sixth Embodiment

6 , an imaging device 1010 includes the optical imaging lens set 10, 20, 30, 40, 50 of the first to fifth embodiments, and an image sensing element 102, 202, 302, 402, 502; wherein the image sensing element 102, 202, 302, 402, 502 is disposed on the imaging surface 101, 201, 301, 401, 501 of the optical imaging lens set 10, 20, 30, 40, 50. The image sensing element 102, 202, 302, 402, 502 is, for example, a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) image sensing element.

In FIG. 6 , the general electronic device 1000 of the seventh embodiment of the present invention includes an imaging device 1010 , wherein the general electronic device 1000 can be applied to general 3C products and other electronic products with imaging functions.

Although the present invention is described using the aforementioned several embodiments, these embodiments are not intended to limit the scope of the present invention. For anyone familiar with this technology, without departing from the spirit and scope of the present invention, various changes in form and details can still be made with reference to the contents of the embodiments disclosed in the present invention. Therefore, it should be understood here that the present invention is defined by the following patent application scope, and any changes made within the patent application scope or its equivalent scope should still fall within the patent application scope of the present invention.

Optical camera lens group 10, 20, 30, 40, 50 First lens 11, 21, 31, 41, 51 Second lens 12, 22, 32, 42, 52 Third lens 13, 23, 33, 43, 53 Fourth lens 14, 24, 34, 44, 54 Fifth lens 15, 25, 35, 45, 55 Sixth lens 16, 26, 36, 46, 56 Seventh lens 17, 27, 37, 47, 57 Filter element 18, 28, 38, 48, 58 Imaging surface 101, 201, 301, 401, 501 Object side of first lens 11a, 21a, 31a, 41a, 51a Image side of the first lens 11b, 21b, 31b, 41b, 51b Object side of the second lens 12a, 22a, 32a, 42a, 52a Image side of the second lens 12b, 22b, 32b, 42b, 52b Object side of the third lens 13a, 23a, 33a, 43a, 53a Image side of the third lens 13b, 23b, 33b, 43b, 53b Object side of the fourth lens 14a, 24a, 34a, 44a, 54a Image side of the fourth lens 14b, 24b, 34b, 44b, 54b Object side of the fifth lens 15a, 25a, 35a, 45a, 55a Image side of the fifth lens 15b, 25b, 35b, 45b, 55b Object side of the sixth lens 16a, 26a, 36a, 46a, 56a Image side of the sixth lens 16b, 26b, 36b, 46b, 56b Object side of the seventh lens 17a, 27a, 37a, 47a, 57a Image side of the seventh lens 17b, 27b, 37b, 47b, 57b Second surface of the filter element 18a, 18b, 28a, 28b, 38a, 38b, 48a, 48b, 58a, 58b Image sensor 102, 202, 302, 402, 502 Electronic device   1000 Imaging device   1010 Optical axis   I Aperture   ST

〔Figure 1A〕is a schematic diagram of the optical photographic lens set of the first embodiment of the present invention; 〔Figure 1B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the first embodiment of the present invention from left to right; 〔Figure 2A〕is a schematic diagram of the optical photographic lens set of the second embodiment of the present invention; 〔Figure 2B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the second embodiment of the present invention from left to right; 〔Figure 3A〕is a schematic diagram of the optical photographic lens set of the third embodiment of the present invention; 〔Figure 3B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the third embodiment of the present invention from left to right; 〔Figure 4A〕is a schematic diagram of the optical photographic lens set of the fourth embodiment of the present invention; [Figure 4B] shows, from left to right, the astigmatism field curvature aberration diagram, distortion diagram, and longitudinal spherical aberration diagram of the fourth embodiment of the present invention; [Figure 5A] is a schematic diagram of the optical photographic lens assembly of the fifth embodiment of the present invention; [Figure 5B] shows, from left to right, the astigmatism field curvature aberration diagram, distortion diagram, and longitudinal spherical aberration diagram of the fifth embodiment of the present invention; [Figure 6] is a schematic diagram of a general electronic device of the sixth embodiment of the present invention.

Optical imaging lens group 10       First lens     11          Second lens     12 Third lens   13                 Fourth lens     14          Fifth lens    15 Sixth lens   16                Seventh lens   17           Filter element     18 Imaging surface   101 Object side of first lens 11a        Image side of first lens  11b Object side of second lens 12a        Image side of second lens  12b Object side of third lens 13a        Image side of third lens  13b Object side of fourth lens 14a        Image side of the fourth lens 14b Object side of the fifth lens 15a        Image side of the fifth lens 15b Object side of the sixth lens 16a        Image side of the sixth lens 16b Object side of the seventh lens 17a        Image side of the seventh lens 17b Two surfaces of the filter element 18a, 18b Image sensor 102        Optical axis I         Aperture ST

Claims (20)

An optical photographic lens set comprises, from the object side to the image side, a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface and image side surface are both concave; a third lens having positive refractive power, whose object side surface and image side surface are both convex; an aperture; a fourth lens having positive refractive power; power, its object side surface and image side surface are both convex; a fifth lens has a negative refractive power, its object side surface and image side surface are both concave; a sixth lens has a positive refractive power, its object side surface and image side surface are both convex; and a seventh lens has a positive refractive power, its object side surface is convex, and its image side surface is concave; wherein the thickness of the first lens on the optical axis is CT1, The thickness of the second lens on the optical axis is CT2, the effective focal length of the optical photographic lens set is EFL, the radius of curvature of the image side of the seventh lens is R14, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the distance from the image side of the second lens to the object side of the third lens on the optical axis is AT23 , the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, which satisfies the following relationships: 0.012<｜(CT1-CT2)/EFL｜<0.071; 0.002<(CT1-CT2)*(AT34-AT23)<0.075; and 1.9<R14/EFL<4. An optical photographic lens set comprises, in order from the object side to the image side: a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface and image side surface are both concave; a third lens having positive refractive power, whose object side surface and image side surface are both convex; an aperture; a fourth lens having positive refractive power, whose object side surface and image side surface are both convex; The image side surfaces are all convex; a fifth lens having negative refractive power, whose object side surface and image side surface are both concave; a sixth lens having positive refractive power, whose object side surface and image side surface are both convex; and a seventh lens having positive refractive power, whose object side surface is convex and image side surface is concave; wherein the distance from the image side surface of the second lens to the object side surface of the third lens on the optical axis is AT23, The distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, the effective focal length of the optical photographic lens set is EFL, the radius of curvature of the image side of the seventh lens is R14, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the distance from the image side of the second lens to the object side of the third lens on the optical axis is The distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT23, and the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, which satisfies the following relationships: 0.04<｜(AT34-AT23)/EFL｜<0.24; 0.002<(CT1-CT2)*(AT34-AT23)<0.075; and 1.9<R14/EFL<4. For the optical photographic lens set of item 1 or item 2 of the patent application, the distance from the image side of the sixth lens to the object side of the seventh lens on the optical axis is AT67, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 1.5<AT67*TTL<3.4. For example, in the optical photographic lens set of item 1 or 2 of the patent application, the distance from the image side of the third lens to the object side of the fourth lens on the optical axis is AT34, and the combined focal length of the first lens, the second lens and the third lens is f123, which satisfies the following relationship: -8<AT34*f123<-4. For the optical photographic lens set of item 1 or item 2 of the patent application, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 0.4<(R7-R8)/TTL<0.6. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the second lens is f2, the focal length of the seventh lens is f7, and the distance from the object side of the first lens to the imaging surface of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 1.3<(f7-f2)/TTL<1.7. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the second lens is f2, the focal length of the sixth lens is f6, and the distance from the object side of the first lens to the imaging surface of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 0.3<(f6-f2)/TTL<0.5. For the optical photographic lens set of item 1 or item 2 of the patent application, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 0.3<(R11-R12)/TTL<0.5. For the optical photographic lens set of item 1 or item 2 of the patent application, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the distance from the object side of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 0.4<(R13+R14)/TTL<0.9. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the effective focal length of the optical photographic lens set is EFL, which satisfies the following relationship: 0.12<(CT4+CT5)/EFL<0.17. For the optical photographic lens set of item 1 or item 2 of the patent application, the distance on the optical axis from the image side of the third lens to the object side of the fourth lens is AT34, the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens is AT67, and the effective focal length of the optical photographic lens set is EFL, which satisfies the following relationship: 0.12<(AT34-AT67)/EFL<0.32. For the optical photographic lens set of item 1 or item 2 of the patent application, the distance on the optical axis from the image side of the second lens to the object side of the third lens is AT23, the distance on the optical axis from the image side of the third lens to the object side of the fourth lens is AT34, and the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens is AT67, which satisfies the following relationship: 0.026<(AT34-AT23)*(AT34-AT67)<0.384. For the optical photographic lens set of item 1 or item 2 of the patent application, the distance on the optical axis from the image side of the third lens to the object side of the fourth lens is AT34, the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens is AT67, the thickness of the first lens on the optical axis is CT1, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: 0.007<(AT34-AT67)*(CT1-CT2)<0.101. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the refractive index of the first lens is Nd1, the refractive index of the third lens is Nd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 0.6<R4/(Nd1*Nd3)<0.78. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the dispersion coefficient of the first lens is Vd1, the dispersion coefficient of the third lens is Vd3, and the radius of curvature of the image side surface of the second lens is R4, which satisfies the following relationship: 435<(Vd1*Vd3)/R4<555. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the combined focal length of the first lens, the second lens and the third lens is f123, and the combined focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens is f4567, which satisfies the following relationship: -2.3<f123/f4567<-1.8. For the optical photographic lens set of item 1 or item 2 of the patent application, the radius of curvature of the object side surface of the sixth lens is R11, the radius of curvature of the image side surface of the sixth lens is R12, the radius of curvature of the object side surface of the seventh lens is R13, the radius of curvature of the image side surface of the seventh lens is R14, and the distance from the object side surface of the first lens to the imaging plane of the optical photographic lens set on the optical axis is TTL, which satisfies the following relationship: 3.2<(R11-R12)*(R13+R14)/TTL<5.4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application scope, at least two lenses among the first lens to the seventh lens are made of glass. An imaging device, comprising an optical imaging lens set as in item 1 or item 2 of the patent application scope and an image sensing element, wherein the image sensing element is disposed on the imaging surface of the optical imaging lens set. An electronic device comprising an imaging device as described in claim 20.

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