TW201903450A - Lens structure and assembly method thereof - Google Patents

Abstract

A lens structure includes a lens barrel and a lens. The lens barrel includes at least two first locking structures. The lens is disposed in the lens barrel and includes at least two second locking structures. The first locking structures are respectively locked with the second locking structures so that the lens is fixed to the lens barrel.

Description

Lens structure and assembling method

The invention relates to an optical structure and an assembling method thereof, and in particular to a lens structure and an assembling method thereof.

In the traditional lens structure, the fixing of the lens barrel and the lens is mainly through the glue. The inclined surface of the lens barrel and the lens defines the position of the glue groove, and the gel is located in the glue groove. Because the glued surface of the lens barrel and the lens is not large, the adhesion between the lens barrel and the lens is not good, which further affects the structural strength of the lens structure. In addition, after the reliability test, one of the potential risks is glue cracking, and the use of colloids to directly fix the barrel and lens can easily cause the lens to shift in the direction of the optical axis, thereby affecting the imaging quality.

The invention provides a lens structure with better structural strength and imaging quality.

The invention provides a method for assembling a lens structure, which has a better assembling yield.

The lens structure of the present invention includes a lens barrel and a lens. The lens barrel includes at least two first buckle structures. The lens is disposed in the lens barrel and includes at least two second buckle structures. The first buckle structure and the second buckle structure are respectively fastened to each other to fix the lens on the lens barrel.

In an embodiment of the present invention, the lens has a first upper surface, a first side surface, at least two protruding portions, a second side surface, and a second upper surface. The first side surface is vertically connected to the first upper surface. Each protruding portion has an inclined surface and a bottom surface. The inclined surface is inclined downward from the first side surface toward a side remote from the first side surface, and the second side surface is vertically connected between the bottom surface and the second upper surface. The protruding portion and the second upper surface define a second buckle structure, so that the second buckle structure of the lens is rotated and locked to the first buckle structure of the lens barrel from bottom to top.

In an embodiment of the present invention, one of the first and second buckle structures is a bump, and the other of the first and second buckle structures is a groove. .

In an embodiment of the present invention, the lens further includes a fool-proof notch located on the first upper surface of the lens.

In an embodiment of the present invention, the above-mentioned lens structure further includes a colloid disposed at least between the lens and the lens barrel.

The lens structure assembling method of the present invention includes the following steps. A lens barrel and a lens are provided. The lens barrel includes at least two first buckle structures, and the lens includes at least two second buckle structures. The lens is arranged in the lens barrel through the lens barrel from bottom to top. The lens is rotated so that the first buckle structure and the second buckle structure are respectively engaged with each other, and the lens is fixed on the lens barrel.

In an embodiment of the present invention, after rotating the lens, the method further includes filling a colloid between the lens and the lens barrel and curing the colloid.

In an embodiment of the present invention, after rotating the lens, the method further includes measuring an optical performance parameter of the lens through an optical instrument, and adjusting the rotation angle of the lens according to the optical performance parameter.

In an embodiment of the present invention, the lens has a first upper surface, a first side surface, at least two protruding portions, a second side surface, and a second upper surface. The first side surface is vertically connected to the first upper surface. Each protruding portion has an inclined surface and a bottom surface. The inclined surface is inclined downward from the first side surface toward a side remote from the first side surface, and the second side surface is vertically connected between the bottom surface and the second upper surface. The protruding portion and the second upper surface define a second buckle structure, so that the second buckle structure of the lens is rotated and locked to the first buckle structure of the lens barrel from bottom to top.

In an embodiment of the present invention, one of the first and second buckle structures is a bump, and the other of the first and second buckle structures is a groove. .

In an embodiment of the present invention, the lens further includes a fool-proof notch located on the first upper surface of the lens.

Based on the above, in the design of the lens structure of the present invention, the lens barrel includes a first buckle structure, and the lens is disposed in the lens barrel and includes the first buckle structure. The first buckle structure and the second buckle structure are respectively fastened to each other, so that the lens can be fixed on the lens barrel. In this way, the lens structure of the present invention can have better structural strength and imaging quality.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1A is a schematic top view of a lens structure according to an embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of the lens structure of FIG. 1A. FIG. 1C is a schematic three-dimensional top view of the lens of the lens structure of FIG. 1A. FIG. 1D is a schematic three-dimensional side view of the lens as the lens structure of FIG. 1A. FIG. FIG. 1E is a schematic top view of a lens barrel as the lens structure of FIG. 1A.

Please refer to FIG. 1A and FIG. 1B first. In this embodiment, the lens structure 100a includes a lens barrel 110a and a lens 120a. The lens barrel 110a includes at least two first latching structures 112a. The lens 120a is disposed in the lens barrel 110a and includes at least two second latching structures 122a. The first buckling structures 112a and the second buckling structures 122a are fastened to each other, respectively, and the lens 120a is fixed on the lens barrel 110a. In particular, the second buckle structure 122a of the lens 120a in this embodiment is a first buckle structure 112a that is locked and rotated to the lens barrel 110a from bottom to top.

In detail, please refer to FIG. 1B and FIG. 1E at the same time. The lens barrel 110a of this embodiment includes three first buckle structures 112a. Here, the first buckle structure 112a is embodied as a bump, wherein the first buckle structure 112a may be integrally formed with the lens barrel 110a, but is not limited thereto.

Furthermore, referring to FIG. 1B, FIG. 1C, and FIG. 1D at the same time, the lens 120a of this embodiment is embodied as a cylindrical lens. The lens 120a has a first upper surface 121a, a first side surface 123a, and at least two protrusions. The portion 125a, a second side surface 127a, and a second upper surface 129a. The first side surface 123a is vertically connected to the first upper surface 121a. Each protruding portion 125a has an inclined surface 126a and a bottom surface 128a. The inclined surface 126a is inclined downward from the first side surface 123a toward a side far from the first side surface 123a, and the second side surface 127a is vertically connected between the bottom surface 128a and the second upper surface 129a. The protruding portion 125a and the second upper surface 129a define a second latching structure 122a. Here, the second buckle structure 122a is embodied as a groove, and the number of the second buckle structure 122a corresponds to the number of the first buckle structure 112a, which are all three, but not limited thereto. .

It is worth mentioning that although the first buckle structure 112a of the lens barrel 110a is embodied as a bump, and the second buckle structure 122a of the lens 120a is embodied as a groove, the invention is not limited thereto. . In other embodiments not shown, the first buckle structure of the lens barrel may also be a groove, and the second buckle structure of the lens may also be a bump, which still belongs to the scope of the present invention.

In addition, in order to further fix the lens 120a and the lens barrel 110a, the lens structure 100a of this embodiment may further include a colloid 130a disposed at least between the lens 120a and the lens barrel 110a to provide an adhesion force to the lens 120a and the lens barrel 110a. between. Here, the colloid 130a is, for example, a heat-curable colloid, such as an ultraviolet light colloid, and the colloid 130a can be cured through light curing, but it is not limited thereto.

Please refer to FIG. 1B again. The first buckling structure 112a of the lens barrel 110a and the second buckling structure 122a of the lens 120a interfere with each other in this embodiment, and the lens 120a is fixed on the lens barrel 110a. Compared to the conventional method of filling the glue tank with glue to fix the lens to the lens barrel, the lens structure 100a of this embodiment is not fixed by direct gluing. Instead, the lens 120a and the lens barrel 110a are rotated. The buckle structure is used for preliminary fixing, and the colloid 130a disposed between the lens 120a and the lens barrel 110a is adhered and fixed, so that the lens structure 100a of this embodiment has better structural strength and structural stability. At the same time, the colloidal body 130a in the first latching structure 112a and the second latching structure 122a can absorb the collision force between the lens 120a and the lens barrel 110a, so as to effectively reduce the occurrence of glue cracks.

FIG. 2A to FIG. 2E are schematic flowcharts of an assembling method of the lens structure of FIG. 1A. It should be noted that, for convenience of explanation, FIG. 2A is a schematic side view; FIGS. 2B and 2C are schematic top views; and FIG. 2D and FIG. 2E are cross-sectional schematic views.

For assembling the lens structure 100a, please refer to FIG. 1C and FIG. 1E first. First, a lens barrel 110a and a lens 120a are provided. Here, the lens barrel 110a includes three first buckle structures 112a, and the lens 120a includes three second buckle structures 122a.

2A and 2B, the lens 120a passes through the lens barrel 110a from the bottom to the top and is disposed in the lens barrel 110a. That is, the lens 120a is assembled upward from the bottom of the lens barrel 110a in the direction D. At this time, the first buckling structure 112a of the lens barrel 110a and the second buckling structure 122a of the lens 120a do not interfere with each other, that is, they are misaligned.

Next, referring to FIG. 2B, FIG. 2C, and FIG. 2D at the same time, rotate the lens 120a along the direction R, so that the first fastening structure 112a and the second fastening structure 122a are fastened to each other, respectively, and the lens 120a is fixed to the lens barrel 110a. Specifically, the lens 120a can be rotated along the Z-axis direction by a manual method or a table rotation method, so that the first locking structure 112a of the lens barrel 110a and the second card of the lens 120a are respectively The buckle structures 122a interfere with each other to fix the lens 120a on the lens barrel 110a. That is, the second buckle structure 122a of the lens 120a is a first buckle structure 112a that is locked and rotated to the lens barrel 110a from the bottom to the top, which means that the lens 120a and the lens barrel 110a are formed by a rotating buckle structure. Perform preliminary fixation.

Then, in order to make the lens structure 100a have better imaging quality, an optical performance parameter of the lens 120a can be measured through an optical instrument, and the rotation angle of the lens 120a can be adjusted according to the optical performance parameter. It should be noted that, in order to allow the lens 120a to adjust the imaging quality through rotation, a reserved space may be left between the first latching structure 112a and the second latching structure 122a, such as 0.2 millimeters (mm).

Finally, please refer to FIG. 2E, so that the colloid 130a is filled between the lens 120a and the lens barrel 110a, wherein the colloid 130a is, for example, a thermosetting colloid, such as an ultraviolet colloid. Next, the colloid 130a is cured by light curing to complete the assembly of the lens structure 100a.

In short, the lens structure 100a of this embodiment is a fixing method that is not through direct gluing. Instead, the lens 120a and the lens barrel 110a are first fixed by a rotating fastening structure. Next, the user first adjusts the optimal angle of the lens 120a relative to the lens barrel 110a (that is, obtains the best optical parameter), and then confirms the rotation angle before fixing the colloid 130a. In other words, before the colloid 130a is filled between the lens 120a and the lens barrel 110a, the optimal optical parameters of the lens 120a have been adjusted and set, and then the colloid 130a is fixed and fixed with the lens 120a and the lens barrel 110a. The lens structure 100a of this embodiment can have better structural strength and structural stability.

It must be noted here that the following embodiments use the component numbers and parts of the foregoing embodiments, in which the same reference numerals are used to indicate the same or similar components, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments are not repeated.

FIG. 3 is a schematic top perspective view of a lens structure according to another embodiment of the present invention. Please refer to FIG. 1A and FIG. 3 at the same time. The lens structure 100b of this embodiment is similar to the lens structure 100a of FIG. 1A. The difference between the two is that the lens 120b of the lens structure 100b of this embodiment further includes a fool-proof notch 124b, On the first upper surface 121b of the lens 120b. Through the design of the fool-proof notch 124b, the user can know how much the lens 120b rotates, which can be used as a basis for marking and adjusting imaging.

FIG. 4 is a schematic top view of a lens structure according to another embodiment of the present invention. Please refer to FIG. 1A and FIG. 4 at the same time. The lens structure 100c of this embodiment is similar to the lens structure 100a of FIG. 1A. The difference between the two is that the lens barrel 110c of the lens structure 100c of this embodiment includes four first buckle structures. 112c, and the lens 120c is disposed in the lens barrel 110c and includes four second buckle structures 122c. The first buckling structure 112c and the second buckling structure 122c are fastened to each other, respectively, so that the lens 120c can be fixed on the lens barrel 110c. Here, the first buckle structure 112c is embodied as a groove, and the second buckle structure 122c is embodied as a bump, but it is not limited thereto.

In summary, in the design of the lens structure of the present invention, the lens is fixed to the lens barrel by the first buckle structure and the second buckle structure being fastened to each other, respectively. Compared to the conventional method of fixing the lens barrel and the lens by gluing, the lens structure of the present invention does not pass the direct gluing method, and the lens and the lens barrel are fixed by a rotating buckle structure, and then matched with a buckle. Combining the colloids in the structure to form an adhesive fixation allows the lens structure to have better structural strength and structural stability. In addition, since the lens structure of the present invention uses a rotating buckle structure to fix the lens and the lens barrel, it can provide more flexibility in assembly.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100a, 100b, 100c‧‧‧ lens structure

110a, 110c ‧‧‧ lens barrel

112a, 112c‧‧‧First buckle structure

120a, 120b‧‧‧ lens

121a, 121b‧‧‧First upper surface

122a‧‧‧Second snap structure

124b‧‧‧Foolproof gap

123a‧‧‧first side surface

125a‧‧‧ protrusion

126a‧‧‧inclined surface

127a‧‧‧Second side surface

128a‧‧‧ Underside

129a‧‧‧second upper surface

130a‧‧‧ colloid

D, R‧‧‧ direction

FIG. 1A is a schematic top view of a lens structure according to an embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of the lens structure of FIG. 1A. FIG. 1C is a schematic three-dimensional top view of the lens of the lens structure of FIG. 1A. FIG. 1D is a schematic three-dimensional side view of the lens as the lens structure of FIG. 1A. FIG. FIG. 1E is a schematic top view of a lens barrel as the lens structure of FIG. 1A. FIG. 2A to FIG. 2E are schematic flowcharts of an assembling method of the lens structure of FIG. 1A. FIG. 3 is a schematic top perspective view of a lens structure according to another embodiment of the present invention. FIG. 4 is a schematic top view of a lens structure according to another embodiment of the present invention.

Claims (11)

A lens structure includes: a lens barrel including at least two first buckle structures; and a lens disposed in the lens barrel and including at least two second buckle structures, wherein the first buckle structures are respectively connected with the The second buckle structures are fastened to each other to fix the lens on the lens barrel. The lens structure according to item 1 of the scope of patent application, wherein the lens has a first upper surface, a first side surface, at least two protrusions, a second side surface, and a second upper surface, the first side The surface is vertically connected to the first upper surface, and each of the protrusions has an inclined surface and a bottom surface, the inclined surface is inclined downward from the first side surface to a side away from the first side surface, and the second side surface Connected vertically between the bottom surface and the second upper surface, and the protrusions and the second upper surface define the second buckle structures, so that the second buckle structures of the lens are from the bottom to the bottom The first buckle structures locked to the lens barrel are rotated upwardly. The lens structure according to item 2 of the patent application scope, wherein the lens further includes a fool-proof notch located on the first upper surface of the lens. The lens structure according to item 1 of the scope of patent application, wherein one of the first buckle structures and the second buckle structures is a bump, and the first buckle structures and the second buckle structures are The other of the buckle structures is a groove. The lens structure according to item 1 of the patent application scope further includes: a colloid disposed at least between the lens and the lens barrel. A method for assembling a lens structure includes: providing a lens barrel and a lens, the lens barrel including at least two first buckle structures, and the lens including at least two second buckle structures; passing the lens from bottom to top The lens barrel is disposed in the lens barrel; and the lens is rotated so that the first buckle structures and the second buckle structures are respectively engaged with each other to fix the lens on the lens barrel. The method for assembling a lens structure according to item 6 of the patent application, wherein after rotating the lens, the method further comprises: filling a colloid between the lens and the lens barrel; and curing the colloid. The method for assembling a lens structure according to item 6 of the scope of patent application, wherein after rotating the lens, the method further comprises: measuring an optical performance parameter of the lens through an optical instrument, and adjusting the rotation of the lens according to the optical performance parameter angle. The method for assembling a lens structure according to item 6 of the scope of patent application, wherein the lens has a first upper surface, a first side surface, at least two protruding portions, a second side surface, and a second upper surface. The first side surface is vertically connected to the first upper surface. Each protruding portion has an inclined surface and a bottom surface. The inclined surface is inclined downward from the first side surface to a side far from the first side surface, and the second The side surface is vertically connected between the bottom surface and the second upper surface, and the protrusions and the second upper surface define the second buckle structures, so that the second buckle structures of the lens are composed of The first buckle structures locked to the lens barrel are rotated and locked downward. The method for assembling a lens structure according to item 9 of the scope of patent application, wherein the lens further includes a fool-proof notch located on the first upper surface of the lens. The method for assembling a lens structure according to item 6 of the scope of patent application, wherein one of the first buckle structures and the second buckle structures is a bump, and the first buckle structures and the The other of these second buckle structures is a groove.