CN107300754B - Optical lens with focal length of 25mm - Google Patents
Optical lens with focal length of 25mm Download PDFInfo
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- CN107300754B CN107300754B CN201710720951.XA CN201710720951A CN107300754B CN 107300754 B CN107300754 B CN 107300754B CN 201710720951 A CN201710720951 A CN 201710720951A CN 107300754 B CN107300754 B CN 107300754B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 19
- 230000005494 condensation Effects 0.000 abstract description 7
- 238000009833 condensation Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 2
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- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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Abstract
The invention discloses an optical lens with a focal length of 25mm, which comprises a light-gathering group, a convex lens, a diverging group and an image plane which are sequentially arranged from left to right and have the central lines on the same straight line, wherein external light rays sequentially pass through the light-gathering group, the convex lens and the diverging group and then act on the image plane, the distance between the light-gathering group and the convex lens on the central line is 12.88mm, and the distance between the convex lens and the diverging group on the central line is 17.46mm. Through the light condensation effect of the light condensation group, the light is further converged through the convex lens, and finally the light is diffused through the diffusion group, so that the final light can uniformly act on an image surface, and the requirements of the light and pixels are met; meanwhile, the optical lens with the focal length of 25mm can be applied to detection equipment or a camera for photographing, the light use requirement is met, and the applicability is improved.
Description
Technical Field
The invention belongs to an optical path, and particularly relates to an optical lens with a focal length of 25 mm.
Background
With the development of science and technology, the requirements of people for various products are gradually diversified. The optical paths required by different pixels are available in various detection devices and cameras, but most of the optical paths in the detection devices and the optical paths in the cameras cannot be used universally, so that the production difficulty of the optical lenses is increased.
Disclosure of Invention
It is an object of the present invention to provide an optical lens having a focal length of 25mm, which can solve at least one of the above problems.
According to one aspect of the invention, the optical lens with the focal length of 25mm is provided, and comprises a light condensation group, a convex lens, a divergence group and an image plane which are sequentially arranged from left to right and have the central lines on the same straight line, external light rays sequentially pass through the light condensation group, the convex lens and the divergence group and then act on the image plane, the distance between the light condensation group and the convex lens on the central line is 12.88mm, and the distance between the convex lens and the divergence group on the central line is 17.46mm.
The invention has the beneficial effects that: through the light condensation effect of the light condensation group, the light is further converged through the convex lens, and finally the light is diffused through the diffusion group, so that the final light can uniformly act on an image surface, and the requirements of the light and pixels are met; meanwhile, the optical lens with the focal length of 25mm can be applied to detection equipment or a camera for photographing, the light using requirements are met, and the applicability is improved.
In some embodiments, the light-gathering group comprises a first lens and a second lens arranged from left to right, the central thicknesses of the first lens and the second lens are respectively 2.92mm and 1.5mm, the distance between the central lines of the first lens and the second lens is 6.05mm, the left side and the right side of the first lens are convex towards the left side, the radii of the left side and the right side of the first lens are respectively 28.53mm and 18.41mm, the second lens is a concave lens, and the radii of the left side and the right side of the second lens are respectively 115.75mm and 27.76mm. Therefore, external incident light can sequentially pass through the first lens and the second lens to finish the convergence of the incident light, and then the incident light acts on the convex lens.
In some embodiments, the radii of the left and right side mirror surfaces of the convex lens are 43.18mm and 111.37mm, respectively, and the center thickness of the convex lens is 8.16mm. Thereby, further concentration of light may be achieved.
In some embodiments, the divergent group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are arranged in sequence from left to right, the central thicknesses of the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are respectively 3.05mm, 4.17mm, 5.38mm, 2.39mm and 3.1mm, the distances between adjacent lenses of the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens on the central line are respectively 1.07mm, 4.1mm, 0.26mm and 0.2mm, the left and right lens surfaces of the fourth lens are convex to the left, the radii of the left and right lens surfaces of the fifth lens are respectively convex to the left, the radii of the left and right lens surfaces of the sixth lens are respectively 19.97mm and 13.88mm, the left and right lens surfaces of the sixth lens are convex to the right, the radii of the left and right lens surfaces of the sixth lens are respectively 16.46mm and 18.54mm, the left and right lens surfaces of the seventh lens are respectively convex to the left, the radii of the seventh lens are respectively 94.68mm and the eighth lens surfaces of the left and the right lens are respectively convex to the right, and the radius of the eighth lens is respectively 82 mm. Therefore, the light rays can be diffused for many times through each lens, and finally uniformly act on the image surface.
In some embodiments, an optical lens with a focal length of 25mm is characterized by a pixel of 1000 ten thousand. Thereby, the respective pixel requirements can be met.
Drawings
FIG. 1 is a schematic diagram of the optical path principle of an optical lens with a focal length of 25mm according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1: the optical lens with the focal length of 25mm comprises a light-gathering group 1, a convex lens 2, a divergence group 3 and an image plane 4 which are sequentially arranged from left to right and have the central lines on the same straight line, external light rays sequentially pass through the light-gathering group 1, the convex lens 2 and the divergence group 3 and then act on the image plane 4, the distance between the light-gathering group 1 and the convex lens 2 on the central lines is 12.88mm, and the distance between the convex lens 2 and the divergence group 3 on the central lines is 17.46mm. Wherein, the adjustable focal length of this light path structure is 25mm, from this, can adjust spotlight group 1, convex lens 2 and diverge the distance between group 3 three and image plane 4, the detection or the shooting of the different distance article of being convenient for improve the suitability. As shown in FIG. 1, the direction of the arrow on the dotted line is a schematic diagram of the light transmission direction.
The light-gathering group 1 comprises a first lens 11 and a second lens 12 which are arranged from left to right, the central thicknesses of the first lens 11 and the second lens 12 are respectively 2.92mm and 1.5mm, the distance between the central lines of the first lens 11 and the second lens 12 is 6.05mm, the left side and the right side of the first lens 11 are both convex towards the left side, the radiuses of the left side and the right side of the first lens 11 are respectively 28.53mm and 18.41mm, the second lens 12 is a concave lens, and the radiuses of the left side and the right side of the second lens are respectively 115.75mm and 27.76mm.
Thus, the external incident light can be converged by the first lens 11 and the second lens 12 and then act on the convex lens 2.
The radii of the left and right mirror surfaces of the convex lens 2 are 43.18mm and 111.37mm, respectively, and the center thickness of the convex lens 2 is 8.16mm. And the convex lens 2 is arranged, so that the light can be further converged.
The divergent group 3 comprises a fourth lens 31, a fifth lens 32, a sixth lens 33, a seventh lens 34 and an eighth lens 35 which are sequentially arranged from left to right, the central thicknesses of the fourth lens 31, the fifth lens 32, the sixth lens 33, the seventh lens 34 and the eighth lens 35 are respectively 3.05mm, 4.17mm, 5.38mm, 2.39mm and 3.1mm, the distances of adjacent lenses of the fourth lens 31, the fifth lens 32, the sixth lens 33, the seventh lens 34 and the eighth lens 35 on the central line are respectively 1.07mm, 4.1mm, 0.26mm and 0.2mm, the left and right side lens surfaces of the fourth lens 31 are respectively convex to the left, the radii are respectively 27.16mm and 137.76mm, the left and right side lens surfaces of the fifth lens 32 are respectively convex to the left, the radii are respectively 19.97mm and 13.88mm, the left and right side lens surfaces of the sixth lens 33 are respectively convex to the right, the radii are respectively 16.46mm and 18.54mm, the seventh lens 34 is respectively convex to the left and the right, the radii are respectively convex to the right side lens surfaces of the eighth lens 32 and the right side lens 35 mm, and the radius of the convex to the right side are respectively 38mm.
Therefore, each lens in the divergent group 3 gradually diverges the light, and finally the light can uniformly act on the image surface 4.
The focal length is an optical lens with 25mm, and the pixel is 1000 ten thousand. The light path structure can be applied to a detector or a camera, and the application range is enlarged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (1)
1. The optical lens with the focal length of 25mm is characterized by comprising a light-gathering group (1), a convex lens (2), a divergent group (3) and an image plane (4) which are sequentially arranged from left to right and have central lines on the same straight line, external light rays sequentially pass through the light-gathering group (1), the convex lens (2) and the divergent group (3) and then act on the image plane (4), the distance between the central lines of the light-gathering group (1) and the convex lens (2) is 12.88mm, and the distance between the central lines of the convex lens (2) and the divergent group (3) is 17.46mm;
the light-gathering group (1) comprises a first lens (11) and a second lens (12) which are arranged from left to right, the central thicknesses of the first lens (11) and the second lens (12) are respectively 2.92mm and 1.5mm, the distance between the central lines of the first lens (11) and the second lens (12) is 6.05mm, the left side and the right side of the first lens (11) are convex towards the left side, the radiuses of the left side and the right side of the first lens (11) are respectively 28.53mm and 18.41mm, the second lens (12) is a concave lens, and the radiuses of the left side and the right side of the second lens are respectively 115.75mm and 27.76mm;
the radiuses of the left and right mirror surfaces of the convex lens (2) are respectively 43.18mm and 111.37mm, and the center thickness of the convex lens (2) is 8.16mm;
the divergent group (3) comprises a fourth lens (31), a fifth lens (32), a sixth lens (33), a seventh lens (34) and an eighth lens (35) which are sequentially arranged from left to right, the central thicknesses of the fourth lens (31), the fifth lens (32), the sixth lens (33), the seventh lens (34) and the eighth lens (35) are respectively 3.05mm, 4.17mm, 5.38mm, 2.39mm and 3.1mm, the distances of adjacent lenses of the fourth lens (31), the fifth lens (32), the sixth lens (33), the seventh lens (34) and the eighth lens (35) on the central line are sequentially 1.07mm, 4.1mm, 0.26mm and 0.2mm, the left and right mirror surfaces of the fourth lens (31) are convex towards the left, the radii of the left and right mirror surfaces are respectively 27.16mm and 137.76mm, the left and right mirror surfaces of the fifth lens (32) are convex towards the left, the radii of the left and right mirror surfaces are respectively 19.97mm and 13.88mm, the left and right mirror surfaces of the sixth lens (33) are convex towards the right, the radii of the left and right mirror surfaces are respectively 16.46mm and 18.54mm, the left and right mirror surfaces of the seventh lens (34) are convex towards the right, the radii of the left and right mirror surfaces are respectively 94.68mm and 32.43mm, the eighth lens (35) is a convex lens, and the radii of the left and right mirror surfaces are respectively 82.38mm;
the pixels are 1000 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720951.XA CN107300754B (en) | 2017-08-18 | 2017-08-18 | Optical lens with focal length of 25mm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720951.XA CN107300754B (en) | 2017-08-18 | 2017-08-18 | Optical lens with focal length of 25mm |
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| CN107300754A CN107300754A (en) | 2017-10-27 |
| CN107300754B true CN107300754B (en) | 2023-03-24 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101798U (en) * | 2014-10-26 | 2015-01-14 | 向五峰 | The light channel structure of 1500000 pixel camera lenses |
| CN104360461A (en) * | 2014-12-01 | 2015-02-18 | 东莞市奥普特自动化科技有限公司 | Lens combined structure and machine visual lens with lens combined structure |
| CN204229034U (en) * | 2014-12-02 | 2015-03-25 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN104808315A (en) * | 2015-05-22 | 2015-07-29 | 福建浩蓝光电有限公司 | High-image-quality and low-distortion machine vision ultraviolet lens |
| CN205301690U (en) * | 2015-12-31 | 2016-06-08 | 广州市晶华精密光学股份有限公司 | Super -short focus projection lens |
| JP2017078767A (en) * | 2015-10-20 | 2017-04-27 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| US9726859B1 (en) * | 2014-03-16 | 2017-08-08 | Navitar Industries, Llc | Optical assembly for a wide field of view camera with low TV distortion |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7199947B2 (en) * | 2004-12-28 | 2007-04-03 | Motorola Inc. | Miniature digital camera lens |
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2017
- 2017-08-18 CN CN201710720951.XA patent/CN107300754B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9726859B1 (en) * | 2014-03-16 | 2017-08-08 | Navitar Industries, Llc | Optical assembly for a wide field of view camera with low TV distortion |
| CN204101798U (en) * | 2014-10-26 | 2015-01-14 | 向五峰 | The light channel structure of 1500000 pixel camera lenses |
| CN104360461A (en) * | 2014-12-01 | 2015-02-18 | 东莞市奥普特自动化科技有限公司 | Lens combined structure and machine visual lens with lens combined structure |
| CN204229034U (en) * | 2014-12-02 | 2015-03-25 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN104808315A (en) * | 2015-05-22 | 2015-07-29 | 福建浩蓝光电有限公司 | High-image-quality and low-distortion machine vision ultraviolet lens |
| JP2017078767A (en) * | 2015-10-20 | 2017-04-27 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| CN205301690U (en) * | 2015-12-31 | 2016-06-08 | 广州市晶华精密光学股份有限公司 | Super -short focus projection lens |
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