TWI640807B - Optical lens, assembling method thereof, and lens barrel - Google Patents

Abstract

An optical lens includes a lens barrel, a fixing ring and at least one optical lens. The lens barrel has a joint surface along the inner side of the circumference of one end thereof, and the joint surface is provided with a plurality of microstructures, and the microstructures are protruded from the joint surface. The fixing ring is disposed in the joint surface of the lens barrel, and the optical lens is disposed inside the lens barrel. The optical structure and the fixing ring on the bonding surface are dissolved by a solvent to fix the optical lens in the lens barrel. A method of assembling an optical lens and a lens barrel are also proposed.

Description

Optical lens, assembly method thereof and lens barrel

The present invention relates to an optical component and a method of assembling the same, and more particularly to an optical lens, an assembly method thereof, and a lens barrel.

In order to fix the optical lens in the lens barrel, the optical lens is placed on the outermost side of the optical lens by using a fixing ring, and is then fused by the solvent point between the lens barrel joint surface and the fixing ring. However, since the contact faces between the lens barrel and the fixing ring are smooth surfaces, and the fixing ring is assembled in the lens barrel, the fixing ring is liable to be deflected, so that the gap between the fixing ring and the lens barrel is different. The melting state of the points between the fixed ring and the lens barrel is uneven. In this way, the joint strength is insufficient, and the fixing ring is easy to move or fall off from the lens barrel, which affects the arrangement of the optical lens in the lens barrel, or even the case where the lens is disassembled.

Therefore, in order to improve the joint strength between the lens barrel and the fixing ring, it is a subject of research in the field.

The invention provides an optical lens with high reliability and durability.

The present invention provides an assembly method of an optical lens which can produce an optical lens of high reliability and durability.

An embodiment of the invention provides an optical lens comprising a lens barrel, a fixing ring and at least one optical lens. The lens barrel has a joint surface along the inner side of the circumference of one end thereof, and the joint surface is provided with a plurality of microstructures, and the microstructures are protruded from the joint surface. The fixing ring is disposed in the joint surface of the lens barrel, and the optical lens is disposed inside the lens barrel. The optical structure and the fixing ring on the bonding surface are dissolved by a solvent to fix the optical lens in the lens barrel.

An embodiment of the present invention provides a lens barrel having a joint surface along the inner side of one end of the one end, and a plurality of microstructures are disposed on the joint surface, and the microstructures are protruded from the joint surface.

An embodiment of the present invention provides a method for assembling an optical lens, comprising: providing a lens barrel having a joint surface along an inner side of a circumference of one end thereof, and a plurality of microstructures on the joint surface, the microstructures protruding On the joint surface, and at least one optical lens is disposed inside the lens barrel; the fixing ring is disposed in the joint surface of the lens barrel; and a solvent is used to dissolve the microstructure and the fixing ring on the joint surface to fix the optical lens to Inside the lens barrel.

In the optical lens, the assembly method thereof and the lens barrel of the embodiment of the invention, the joint surface of the lens barrel is provided with a plurality of microstructures, and a solvent is used to dissolve the microstructure and the fixing ring on the joint surface to fix the optical lens. It is placed in the lens barrel. By utilizing the capillary phenomenon during the melting of the microstructure, the joint surface and the fixing ring can be more completely melted to increase the adhesion between the two. In addition, the microstructure enhances the joint between the barrel and the retaining ring Strength, which simplifies the processing steps in the manufacturing process and reduces production costs. In addition, the microstructure makes it easier to average the gap between the fixed ring and the barrel, and to reduce the deflection of the fixed ring. Therefore, the optical lens, the assembly method thereof and the lens barrel of the embodiment of the present invention can provide an optical lens of high reliability and high durability.

The above described features and advantages of the invention will be apparent from the following description.

50‧‧‧ dropper

60‧‧‧Solvent

100, 100a‧‧‧ optical lens

110‧‧‧Mirror tube

112‧‧‧ joint surface

120‧‧‧Fixed ring

130, 130a‧‧‧Microstructure

140‧‧‧Optical lenses

H‧‧‧height

O1, O2‧‧‧ optical axis

W‧‧‧Width

1A is a perspective view of an optical lens according to an embodiment of the present invention.

1B is a partial cross-sectional view of the optical lens of FIG. 1A.

2A is a rear view of the lens barrel and the optical lens of FIG. 1A.

2B is a schematic cross-sectional view of the lens barrel and the optical lens of FIG. 2A.

3A is a perspective view of the retaining ring of FIG. 1A.

3B is a schematic cross-sectional view of the retaining ring of FIG. 1A.

4 is a schematic cross-sectional view of the optical lens of FIG. 1A.

FIG. 5 is a schematic view showing the lens barrel and the fixing ring of FIG. 1A fixed by a solvent.

Figure 6 is a partial cross-sectional view showing an optical lens according to another embodiment of the present invention.

1A is a perspective view of an optical lens according to an embodiment of the present invention, FIG. 1B is a partial cross-sectional view of the optical lens of FIG. 1A, and FIG. 2A is a lens barrel of FIG. 1A 2B is a schematic cross-sectional view of the lens barrel and the optical lens of FIG. 2A, FIG. 3A is a perspective view of the fixing ring of FIG. 1A, and FIG. 3B is a schematic cross-sectional view of the fixing ring of FIG. 1A. 4 is a schematic cross-sectional view of the optical lens of FIG. 1A. Referring to FIG. 1A to FIG. 3B , the optical lens 100 of the present embodiment includes a lens barrel 110 , a fixing ring 120 , and at least one optical lens 140 (in the embodiment, a plurality of optical lenses 140 are taken as an example). The lens barrel 110 has a joint surface 112 along the inner side of one end of the one end. The joint surface 112 is provided with a plurality of microstructures 130. The microstructures 130 are protruded from the joint surface 112 and are spaced apart, for example, phase. The optical axis O1 of the barrel is circumferentially spaced. The fixing ring 120 is disposed in the joint surface 112 of the lens barrel 110 , and the optical lens 140 is disposed inside the lens barrel 110 .

FIG. 5 is a schematic view showing the lens barrel and the fixing ring of FIG. 1A fixed by a solvent. Referring to FIGS. 1A and 5 , the microstructure 130 and the fixing ring 120 on the bonding surface 112 are dissolved by a solvent 60 to fix the optical lens 140 in the lens barrel 110 . In the present embodiment, the solvent 60 can be dropped into the gap between the fixing ring 120 and the joint surface 112 by the dropper 50, so that the solvent 60 is between the fixing ring 120 and the joint surface 112 by the capillary phenomenon and the fixing ring 120. Flowing between the microstructures 130 and immersing the bonding surface 112, the microstructures 130, and the fixing ring 120 after the solvent is dried, as shown in the right side of FIG. The solvent 60 may be any solvent 60 capable of dissolving the lens barrel 110, the microstructure 130, and the fixing ring 120, and the material of the lens barrel 110, the microstructure 130, and the fixing ring 120 is, for example, plastic. When the fixing ring 120 can abut against the optical lens 140, and when the fixing ring 120 is fixed to one end of the lens barrel 110, the optical lens 140 can be fixed inside the lens barrel 110 without slipping from the end of the lens barrel 110. .

In the present embodiment, each of the microstructures 130 has a trapezoidal shape (as shown in FIG. 1B) in a plane perpendicular to the optical axis O1 of the lens barrel 110, and the bottom of the trapezoid is on the side of the joint surface 112, and the top portion It is on the side of the fixed ring 120. Further, in the present embodiment, each of the microstructures 130 has a width W in the circumferential direction of the lens barrel 110, and the width W is less than 5 μm. Furthermore, in the present embodiment, each of the microstructures 130 has a height h in a radial direction perpendicular to the optical axis O1, and the height h is less than 1 micrometer. In one embodiment, the width W of the microstructure 130 can be as small as 0.03 mm, and the height h of the microstructure 130 can be as small as 0.002 mm.

In the optical lens 100 of the embodiment, the plurality of microstructures 130 are disposed on the joint surface 112 of the lens barrel 110, and the microstructure 130 and the fixing ring 120 on the joint surface 112 are dissolved by a solvent 60 to remove the optical lens 140. It is fixed in the lens barrel 110. By utilizing the capillary phenomenon when the microstructure 130 is molten, the joint surface 112 and the fixing ring 120 can be melted more completely to increase the adhesion between the two. In addition, the microstructure 130 enhances the joint strength between the lens barrel 110 and the fixing ring 120, which simplifies the processing steps in the manufacturing process and reduces the production cost. In addition, the microstructure 130 is more likely to average the gap between the fixed ring 120 and the lens barrel 110, and to reduce the deflection of the fixed ring. Therefore, the optical lens of the embodiment of the present invention and the assembling method thereof can provide an optical lens of high reliability and high durability.

In addition, the microstructure 130 having a trapezoidal cross-section can enhance the capillary phenomenon during the melting of the microstructure 130, and improve the bonding strength between the lens barrel 110 and the fixing ring 120.

Figure 6 is a partial cross-sectional view showing an optical lens according to another embodiment of the present invention. Referring to FIG. 6, the optical lens 100a of the present embodiment and the light of FIG. 1A and FIG. 1B The learning lens 100 is similar, and the main differences between the two are as follows. In the optical lens 100a of the present embodiment, each of the microstructures 130a has a triangular cross section in a plane perpendicular to the optical axis O1 of the lens barrel 110, the bottom of the triangle is on the side of the joint surface 112, and the apex angle is fixed. Ring 120 side. Further, in the present embodiment, each of the microstructures 130a has a width W in the circumferential direction of the lens barrel 110, and the width W is less than 5 μm. Furthermore, in the present embodiment, each microstructure 130a has a height h in the radial direction perpendicular to the optical axis O1, and the height h is less than 1 micrometer. In one embodiment, the width W of the microstructure 130a can be as small as 0.03 mm, and the height h of the microstructure 130a can be made as small as 0.002 mm. The optical lens 100a of the present embodiment can achieve advantages and effects similar to those of the optical lens 100 described above, and will not be repeated herein. In addition, the microstructure 130a having a triangular cross section enhances the capillary phenomenon when the microstructure 130a is melted, and improves the joint strength between the lens barrel 110 and the fixed ring 120.

In an embodiment, a method of assembling an optical lens is further applicable to the optical lens 100 or the optical lens 100a described above, and an assembly method of the optical lens 100 will be described below as an example. The assembling method of the optical lens 100 includes the following steps. First, referring to FIG. 2A and FIG. 2B, a lens barrel 110 is provided. The lens barrel 110 has a joint surface 112 along the inner side of one end of the one end. The joint surface 112 is provided with a plurality of microstructures 130. The microstructures 130 are protruded from the joint. On the face 112, and at least one optical lens 140 is disposed inside the lens barrel 110 (in the case of FIG. 2B, a plurality of optical lenses 140 are taken as an example). Then, as shown in FIG. 1A, the fixing ring 120 is disposed in the joint surface 112 of the lens barrel 110. Next, as shown in FIG. 5 , the microstructure 130 and the fixing ring 120 on the bonding surface 112 are dissolved by the solvent 60 to fix the optical lens 140 to the lens barrel 110 . Inside. In this way, the assembly of the optical lens 100 is completed. The details of the above steps and the effects that can be achieved by the assembly method have been described in detail in the foregoing embodiments and will not be repeated here.

As described above, in the optical lens, the assembly method thereof, and the lens barrel of the embodiment of the present invention, the joint surface of the lens barrel is provided with a plurality of microstructures, and a solvent is used to dissolve the microstructure and the fixing ring on the joint surface. The optical lens is fixed in the lens barrel. By utilizing the capillary phenomenon during the melting of the microstructure, the joint surface and the fixing ring can be more completely melted to increase the adhesion between the two. In addition, the microstructure enhances the joint strength between the lens barrel and the retaining ring, which simplifies the processing steps in the manufacturing process and reduces the production cost. In addition, the microstructure makes it easier to average the gap between the fixed ring and the barrel, and to reduce the deflection of the fixed ring. Therefore, the optical lens, the assembly method thereof and the lens barrel of the embodiment of the present invention can provide an optical lens of high reliability and high durability.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

Claims (17)

An optical lens includes: a lens barrel having a joint surface along a circumference of one end of the one end, the joint surface having a plurality of microstructures, and the microstructures are protruded from the joint surface; a fixing ring is disposed In the joint surface of the lens barrel; and at least one optical lens disposed inside the lens barrel, wherein a solvent is used to dissolve the microstructure on the joint surface and the fixing ring to fix the optical lens to the optical lens Inside the lens barrel. The optical lens of claim 1, wherein each of the microstructures has a triangular cross section in a plane perpendicular to an optical axis of the lens barrel. The optical lens of claim 2, wherein each microstructure has a width and the width is less than 5 microns. The optical lens of claim 2, wherein each microstructure has a height and the height is less than 1 micrometer. The optical lens of claim 1, wherein each of the microstructures has a trapezoidal cross section in a plane perpendicular to an optical axis of the lens barrel. The optical lens of claim 5, wherein each microstructure has a width and the width is less than 5 microns. The optical lens of claim 5, wherein each microstructure has a height and the height is less than 1 micrometer. A lens barrel is suitable for a fixing ring to be melted through a solvent, the lens barrel includes a joint surface along a circumference of one end of the one end, the joint surface is provided with a plurality of microstructures, and the microstructures are protruded from And bonding the microstructures and the fixing ring to the bonding surface through the solvent. The lens barrel of claim 8, wherein each of the microstructures has a triangular cross section in a plane perpendicular to an optical axis of the lens barrel. The lens barrel of claim 9, wherein each microstructure has a width and the width is less than 5 microns. The lens barrel of claim 9, wherein each microstructure has a height and the height is less than 1 micrometer. The lens barrel of claim 8, wherein each of the microstructures has a trapezoidal cross section in a plane perpendicular to an optical axis of the lens barrel. The lens barrel of claim 12, wherein each microstructure has a width and the width is less than 5 microns. The lens barrel of claim 12, wherein each microstructure has a height and the height is less than 1 micron. A method for assembling an optical lens, comprising: providing a lens barrel having a joint surface along an inner side of a circumference of one end thereof, the joint surface having a plurality of microstructures, wherein the microstructures are protruded from the joint surface And the lens barrel is provided with at least one optical lens; a fixing ring is disposed in the joint surface of the lens barrel; and a microstructure is used to dissolve the microstructure on the joint surface and the fixing ring to use the optical lens It is fixed in the lens barrel. The method of assembling an optical lens according to claim 15, wherein each of the microstructures has a triangular cross section in a plane perpendicular to an optical axis of the lens barrel. The method of assembling an optical lens according to claim 15, wherein each of the microstructures has a trapezoidal cross section in a plane perpendicular to an optical axis of the lens barrel.