TWI827372B - Fixation device for lens - Google Patents

Abstract

A fixation device for lens includes a fixing ring and an operating member. The fixing ring is sleeve on a lens under test and presses against an outer side wall of the lens under test. The fixing ring includes two free ends and two limit convex portions. The two free ends form an opening together. The two limit convex portions are disposed on the two free ends respectively, and the two limit convex portions are close to an outer side of the fixing ring and protrude toward the opening. The operating member includes a fixing portion, a neck portion, and an operating portion. The fixing portion is used to be disposed in the opening. One end of the neck portion is connected to the fixing portion and located between the two limit convex portions. One end of the operating portion is connected to the neck portion and located outside of the fixing ring.

Description

Lens holding device

The present invention relates to a lens holding device, and in particular to a lens holding device used in a focusing process.

The focusing method of the lens module mainly uses a clamp or holding device to fix the lens to be tested, and then uses the holding device to adjust the relative position of the lens and the image sensor to focus. Generally speaking, lenses are cylindrical and have a circular appearance. In order to adjust the focal length of the lens, a groove is designed on the outer wall of the circular lens to be fixed by the engaging structure (such as a convex part) of the focusing holding device. Then, the relative position of the lens and the image sensor can be adjusted through the holding device to perform the focusing process.

However, forming additional grooves on the outer side wall of the lens will increase the cost of manufacturing the lens module. In order to hold a round lens with smooth side walls that do not have grooves, a lens holding device must be improved or otherwise designed.

In view of the above problems, the main purpose of the present invention is to provide a lens holding device, which includes a fixed ring and an operating member. The fixed ring is sleeved on a lens to be tested, and the operating member is disposed on a side of the fixed ring. The structure opens and abuts against the lens to be tested, so that the holding device can fix the lens to be tested and adjust the position of the lens to be tested, thereby solving the problem that the conventional holding device cannot be applied to lenses without grooves.

In order to achieve the above object, the present invention provides a lens holding device, which is used in the focusing process of a lens to be tested. The holding device includes a fixing ring and an operating component. The fixing ring is sleeved on the lens to be tested and abuts against an outer wall of the lens to be tested. The fixed ring includes two free ends and two limiting protrusions. The two free ends together form an opening. Two limiting protrusions are respectively disposed on the two free ends and are close to an outside of the fixed ring and protrude toward the opening. The operating component is inserted into the opening from a surface of the fixed ring. The operating part includes a fixed part, a neck part and an operating part. The fixing part is used to be arranged in the opening. One end of the neck is connected to the second side wall of the fixing part and is located between the two limiting protrusions. One end of the operating part is connected to the neck and located outside the fixed ring.

According to an embodiment of the present invention, the two limiting protrusions form a first part and a second part of the opening. The second part is located between the two limiting protrusions, and the width of the first part is greater than the width of the second part.

According to an embodiment of the present invention, the fixing part includes a guide part. The neck is connected to the guide part, and the width of the guide part gradually shrinks from the neck toward the direction of the lens to be tested.

According to an embodiment of the present invention, the fixing part further includes a contact part. The guide part is connected to the contact part, and the contact part is in contact with the outer wall of the lens to be tested.

According to an embodiment of the present invention, the two limiting protrusions respectively include a guide slope and are close to the outside of the fixing ring. The guide slope is inclined in the direction of the opening.

According to an embodiment of the present invention, the fixing part includes a first side wall and a second side wall opposite to each other. The first side wall is in contact with the outer wall of the lens to be tested, and the second side wall is in contact with the limiting convex portion.

According to an embodiment of the present invention, the two limiting protrusions respectively include a limiting groove, which is disposed on the limiting protrusion and faces the first part of the opening. The second side wall of the fixing part is in contact with the limiting groove.

According to an embodiment of the present invention, the fixing ring includes a hollow structure and at least one fixing structure. The hollow structure is connected to the opening. The fixed structure includes an arc-shaped side wall, and the arc-shaped side wall faces the hollow structure. The lens to be tested is accommodated in the hollow structure, and the curved side wall of the fixed structure contacts the outer wall of the lens to be tested.

According to an embodiment of the present invention, the fixing ring includes an extending slope. The extended bevel is inclined toward the direction of the lens to be tested, and a bottom surface of the extended bevel is in contact with a peripheral edge of the lens to be tested.

According to an embodiment of the present invention, the fixing ring includes two first engaging parts, respectively close to the two free ends. The holding device further includes a fixing member including two second engaging parts. The two second engaging parts are located on a bottom surface of the fixing member, and the two second engaging parts are accommodated in the two first engaging parts.

According to an embodiment of the present invention, the fixing ring includes a hollow structure, and the lens to be tested is accommodated in the hollow structure. An upper surface of the fixing member is an inclined surface, and the inclined surface is inclined toward the direction of the fixing ring.

According to an embodiment of the present invention, the fixing ring further includes an operating structure protruding outward from the outside of the fixing ring.

According to an embodiment of the present invention, the operating structure is located at a symmetrical position of the opening.

According to an embodiment of the present invention, the fixed ring further includes two operating structures. The two operating structures are symmetrically arranged on the outside of the fixed ring and protrude outward from the outside of the fixed ring.

Based on the above, according to the lens holding device of the present invention, through the aforementioned structure, the fixing ring and the operating member can jointly hold the lens to be tested without any engaging structure on the outer wall. In addition, the neck part of the operating part is located between the two limiting protrusions of the fixed ring, and the operating part of the operating part is located outside the fixed ring. Therefore, when force is applied to the operating part, the force can be transmitted to the fixing ring through the neck, thereby adjusting the position of the lens to be tested. That is to say, the fixing ring and the operating member are used to drive the movement of the lens to be tested, so as to adjust the relative position of the lens to be tested and the image sensor, and to perform the focusing process.

In order to better understand the technical content of the present invention, preferred specific embodiments are described below. The specific embodiments described are only used to explain the case and are not used to limit the case. The description of the structural operations is not intended to limit the order of their execution. Any structure recombined by components to produce a device with equal efficacy is The scope of this disclosure. In addition, some components are omitted from the drawings in the embodiments to clearly illustrate the technical features of the present invention. The same reference numbers will be used throughout the drawings to refer to the same or similar elements.

First, the lens holding device 1 of this embodiment (hereinafter referred to as the holding device) is used in the focusing process to hold a lens 9 to be tested. The relative position of the lens 9 to be tested and the image sensor is adjusted by the holding device 1 to focus. Figure 1 is a schematic diagram of the holding device and the lens to be tested according to the first embodiment of the present invention. Figure 2 is an exploded schematic diagram of the holding device and the lens to be tested shown in Figure 1. Figure 3 is the fixing ring and operation shown in Figure 2. Please refer to Figure 1, Figure 2 and Figure 3 for a partially enlarged schematic diagram of the assembled parts and lens to be tested. The holding device 1 of this embodiment includes a fixing ring 10 and an operating member 20 . Among them, the fixed ring 10 is a C-shaped ring. Therefore, the fixing ring 10 includes two free ends 11 , and the two free ends 11 together form an opening 12 . In addition, the fixing ring 10 further includes two limiting protrusions 13 . The two limiting protrusions 13 are respectively provided on the two free ends 11 , close to an outer side 101 of the fixed ring 10 , and protrude toward the direction of the opening 12 .

As shown in FIG. 3 , the two limiting protrusions 13 form a first part 121 and a second part 122 of the opening 12 . That is to say, the opening 12 is divided into a first part 121 and a second part 122 by the protruding limiting protrusion 13 . In this embodiment, the portion located between the two limiting protrusions 13 is defined as the second portion 122 . In addition, the width of the first part 121 is greater than the width of the second part 122, and the first part 121 is close to the inner side 102, while the second part 122 is close to the outer side 101.

In this embodiment, the fixing ring 10 is sleeved on the lens 9 to be tested, and contacts an outer wall 91 of the lens 9 to be tested. The lens 9 to be tested is cylindrical, and the outer side wall 91 is smooth and has no grooves or other concave or convex structures for engagement. Figure 4 is a bottom view of the holding device and the lens to be tested shown in Figure 1. Please refer to Figures 1, 2 and 4. Specifically, the fixing ring 10 includes a hollow structure 14 located at the center of the fixing ring 10 , and the hollow structure 14 is connected with the opening 12 . When the fixing ring 10 is set on the lens 9 to be tested, the lens 9 to be tested is accommodated in the hollow structure 14 . Preferably, the hollow structure 14 may be a circular through hole to correspond to the cylindrical lens 9 to be tested. Preferably, the fixing ring 10 further includes at least one fixing structure 15 which is disposed on the bottom side of the fixing ring 10 . In addition, the fixed structure 15 includes an arc-shaped side wall 151 , and the arc-shaped side wall 151 faces the hollow structure 14 . Therefore, when the lens 9 to be tested is accommodated in the hollow structure 14 , the arc-shaped side wall 151 of the fixed structure 15 can resist the outer wall 91 of the lens 9 to be tested. Preferably, the fixing ring 10 of this embodiment includes three fixing structures 15, and the three fixing structures 15 are spaced apart from each other, so that the bottom side of the fixing ring 10 can be a hollow structure (that is, the area without the fixing structures 15 is hollow. ). The aforementioned hollow structure can not only reduce the overall weight of the fixing ring 10 to achieve a lightweight effect, but also reduce the force exerted by the fixing ring 10 on the lens 9 under test during the focusing process to avoid causing damage to the lens 9 under test. unnecessary damage.

Figure 5A is a top view of the fixing ring shown in Figure 2 being set on the lens to be tested, and the operating member is inserted into the fixing ring. Figure 5B is a front view of the holding device shown in Figure 5A. Figure 5C is the holding device shown in Figure 5A. For partial enlarged schematic diagrams of the device, please refer to Figure 2, Figure 3, Figure 5A, Figure 5B and Figure 5C. The operating member 20 can be inserted into the opening 12 from a surface of the fixing ring 10 . In this embodiment, the operating member 20 can be inserted into the opening 12 from the upper surface of the fixing ring 10, as shown in the direction of the arrow in FIG. 5B. In addition, the operating part 20 of this embodiment includes a fixed part 21, a neck part 22 and an operating part 23. Among them, the neck portion 22 is a narrow portion. That is to say, the width of the neck portion 22 is smaller than the fixing portion 21 and the operating portion 23 . Moreover, the neck part 22 is located between the fixed part 21 and the operating part 23. In other words, one end of the neck 22 is connected to one side of the fixed part 21 , and one end of the operating part 23 is connected to the neck 22 .

The fixing part 21 is used to be disposed in the opening 12 of the fixing ring 10 . Preferably, the fixing part 21 of this embodiment includes a contact part 211 and a guide part 212. The guide part 212 is connected to the contact part 211, and the neck part 22 is connected to the guide part 212. As shown in FIG. 3 and FIG. 5C , the fixing part 21 includes a first side wall 213 and a second side wall 214 facing each other. The first side wall 213 is located at the abutting portion 211 , the second side wall 214 is located at the guide portion 212 , and the neck portion 22 is connected to the second side wall 214 . Among them, the first side wall 213 is used to abut the outer wall 91 of the lens 9 to be tested, so the first side wall 213 can preferably be arc-shaped. In this embodiment, the contact portion 211 of the fixing portion 21 is first corresponding to the opening 12 of the fixing ring 10 and the first part 121 of the opening 12 is inserted. At this time, the guide part 212 is located in the second part 122 of the opening 12, as shown in FIG. 5A and FIG. 5C. Preferably, the fixing ring 10 can be slightly stretched first, and then the two free ends 11 can be slightly pulled apart to make it easier for the contact portion 211 to be placed in the first part 121 of the opening 12 . After the contact portion 211 is inserted into the first portion 121, the force is stopped to allow the two free ends 11 to return to their original positions.

Preferably, the width of the guide portion 212 in this embodiment tapers from the neck 22 toward the lens 9 to be tested. Specifically, the fixing part 21 includes two guide slopes, which are referred to as the first guide slopes 215 here. The first guide slopes 215 are respectively located on two opposite sides of the guide portion 212 so that the width of the guide portion 212 tapers from the second side wall 214 toward the contact portion 211 . That is to say, the first guide slopes 215 on both sides form a tapered guide portion 212, which tapers from the neck 22 toward the lens 9 to be tested. It should be noted that, for the sake of simplicity, FIG. 5C only shows the first guide slope 215 on one side of the guide portion 212 .

Preferably, the limiting protrusions 13 of the fixed ring 10 respectively include a limiting groove 131 and a guide slope, which are called second guide slopes 132 here, as shown in FIG. 5C . The limiting groove 131 is provided on the limiting protrusion 13 and faces the first part 121 of the opening 12 . The second guide slope 132 is disposed adjacent to the limiting groove 131 and close to the outer side 101 of the fixed ring 10 . In addition, the second guide slope 132 is inclined toward the direction of the opening 12 to form a tapered second portion 122 . In other words, the second part 122 of the opening 12 tapers from the outer side 101 of the fixing ring 10 toward the first part 121 .

As mentioned above, when the operating member 20 is assembled to the fixed ring 10 , the contact portion 211 is first inserted into the first part 121 of the opening 12 from the upper surface of the fixed ring 10 . At this time, the guide part 212 is accommodated in the second part 122 , the neck part 22 and the operating part 23 are located on the outer side 101 of the fixed ring 10 , and the first guide slope 215 is in contact with the second guide slope of the limiting convex part 13 respectively. 132 fit, as shown in Figure 5A and Figure 5C. Then, force can be applied to the operating portion 23 to move in the direction of the fixed ring 10 (the direction of the arrow shown in FIG. 5C ).

FIG. 6 is a schematic diagram after the operating member shown in FIG. 5C moves toward the fixed ring. Please refer to FIG. 2 , FIG. 5C and FIG. 6 . As mentioned above, when the operating part 23 is forced to move in the direction of the fixed ring 10, the guide part 212 can be guided to enter through the mutual cooperation structure of the second guide slope 132 and the first guide slope 215. The first part 121 of the opening 12 is opened, and the contact portion 211 moves to contact the lens 9 to be tested, as shown in FIG. 6 . At this time, the arc-shaped first side wall 213 of the contact portion 211 abuts the outer wall 91 of the lens 9 to be tested, and part of the guide portion 212 is accommodated in the limiting groove 131 of the limiting protrusion 13 and located in the guide portion. The second side wall 214 of 212 is in contact with the limiting groove 131 . Therefore, the fixing portion 21 can be restricted by the limiting groove 131 and cannot move to the outside 101 of the fixing ring 10 .

Furthermore, when the fixing part 21 completely enters the first part 121 of the opening 12 , the neck part 22 is located between the two limiting protrusions 13 (that is, located in the second part 122 of the opening 12 ), and the operating part 23 is located on the fixing ring 10 outside. Therefore, when force is applied to the operating portion 23, the force can be transmitted to the fixing ring 10 through the neck portion 22. In addition, since the outer wall 91 of the lens 9 to be tested is clamped by the fixing ring 10 and the operating member 20, the position of the lens 9 to be tested can be adjusted at the same time. In other words, the relative position of the lens 9 to be tested and the image sensor can be adjusted by applying force on the operating part 23, and then the focusing process can be performed. For example, if the lens 9 to be tested is connected to the lens base by a screw lock, force can be applied to the operating portion 23 to rotate the entire holding device 1 clockwise or counterclockwise, thereby adjusting the lens 9 to be tested and the image. The distance between sensors to perform the focusing process.

In other embodiments, the lens to be tested 9 can also be fixed and clamped by the fixing ring 10 being set on the lens to be tested 9 , and the operating member 20 is only used to rotate the entire holding device 1 clockwise or counterclockwise. , to perform the focusing process. In other words, the contact portion 211 and the first side wall 213 of the operating member 20 do not need to be in contact with the outer wall 91 of the lens to be tested 9 . The focusing process can also be performed by only using the fixing ring 10 to clamp the lens 9 to be tested.

In addition, the structures such as the limiting groove 131 and the second guide slope 132 of the limiting protrusion 13, and the structures such as the contact portion 211, the guide portion 212 and the first guide slope 215 of the fixed portion 21 are also preferred. implementation. In other embodiments, the operating part 20 only needs to have the fixing part 21 , the neck part 22 and the operating part 23 . The fixing part 21 can be directly inserted into the opening 12 from a surface of the fixing ring 10 , and has an arc-shaped first side wall 213 abutting the outer wall 91 of the lens 9 to be tested, and a second side wall 214 abutting the limiting protrusion 13 . In addition, the neck portion 22 is located between the two limiting protrusions 13 , and the operating portion 23 is located outside the fixing ring 10 . The aforementioned structure can also transmit the force exerted on the operating portion 23 to the fixing ring 10 through the neck 22, and can also achieve the function of adjusting the relative position of the lens 9 to be tested and the image sensor.

In some embodiments, during focusing, the operating member 20 will transmit force to the limiting protrusion 13 or the free end 11 of the fixed ring 10 , which may cause the opening 12 to be expanded. Preferably, the holding device 1 further includes a fixing member 30 (as shown in FIGS. 1 and 2 ), which is provided on the fixing ring 10 to limit the width of the opening 12 to prevent the aforementioned opening 12 from being expanded. Specifically, the fixing ring 10 includes two first engaging parts 16 which are respectively close to the two free ends 11 . The fixing part 30 includes two second engaging parts 31 located on the bottom surface of the fixing part 30 . Among them, the first engaging part 16 and the second engaging part 31 have a mutually cooperative structure. For example, the first engaging part 16 may be a recessed structure such as a perforation or a groove. In this embodiment, the first engaging part 16 is a perforation as an example. Correspondingly, the second engaging part 31 may be a protruding pillar. After the operating part 20 is assembled to the fixed ring 10, the second engaging part 31 (ie, the protruding post) of the fixing part 30 is received in the first engaging part 16 (ie, the perforation) of the fixed ring 10 to fix (restrict) ) the distance between the two first engaging parts 16. At the same time, the distance between the two free ends 11 and the width of the opening 12 can also be limited, thereby achieving the effect of preventing the opening 12 from being expanded during focusing. In other embodiments, the first engaging portion 16 can also be a protruding pillar, and the second engaging portion 31 can be a concave structure such as a perforation or a groove, which can also enable the fixing member 30 to be disposed on the fixing ring 10, and The distance between the two first engaging parts 16 is fixed (limited).

In some embodiments, the lens 9 to be tested may be a wide-angle lens. In order to comply with the specifications of the wide-angle lens, attention must be paid to the structure of the fixing ring 10 located above the lens 9 to be tested, so as to prevent the fixing ring 10 from blocking the field of view of the lens 9 to be tested. Preferably, the fixing ring 10 of the present invention may further include an extended inclined surface 17 (as shown in Figures 1, 2, 3 and 5B). The bottom surface of the extended bevel 17 is in contact with a peripheral edge of the lens 9 to be tested, that is, the extended bevel 17 is in contact with the outer peripheral edge of the upper surface of the lens 9 to be tested, to ensure that the lens 9 to be tested is placed in the hollow structure 14 . The thickness of the inclined surface 17 is further tapered toward the hollow structure 14 to form a inclined surface structure. When the fixing ring 10 is set on the lens 9 to be tested, the extending inclined surface 17 is tilted toward the direction of the lens 9 to be tested and downward (as shown in FIG. 5B ). In addition, the upper surface of the fixing member 30 is preferably an inclined surface 32 , and the inclined surface 32 is inclined toward the direction of the fixing ring 10 . During focusing, the bevel structure of the extended bevel 17 and the inclined surface 32 of the fixing member 30 can avoid blocking the field of view of the lens 9 to be tested.

FIG. 7 is a schematic diagram of the holding device and the lens to be tested according to the second embodiment of the present invention. Please refer to FIG. 7 . The holding device 1a of this embodiment also includes a fixing ring 10a, an operating component 20 and a fixing component 30. The structures of the operating part 20 and the fixing part 30 and their connection relationship with the fixing ring 10a are the same as those in the first embodiment, so the aforementioned component symbols are used. The difference between the holding device 1a of this embodiment and the first embodiment is at least that the fixing ring 10a further includes an operating structure 18a. The operating structure 18a protrudes outward from the outer side 101a of the fixed ring 10a. Preferably, the operating structure 18a is located at a symmetrical position of the opening 12a. For example, the operating structure 18a is located on the opposite side of the opening 12a, so that the operating structure 18a and the operating portion 23 are arranged symmetrically. When adjusting the focus, force can be exerted on the operating portion 23 of the operating member 20 and the operating structure 18a of the fixed ring 10a at the same time. In other words, when adjusting the focus, force can be exerted on the fixing ring 10a and the operating member 20 at the same time, so that the force on the holding device 1a and the lens to be tested 9 held by the holding device 1a is more even.

FIG. 8 is a schematic diagram of the holding device and the lens to be tested according to the third embodiment of the present invention. Please refer to FIG. 8 . Similarly, the holding device 1b of this embodiment also includes a fixing ring 10b, an operating component 20 and a fixing component 30. The structures of the operating part 20 and the fixing part 30 and their connection relationship with the fixing ring 10b are the same as those in the first and second embodiments, so the aforementioned component symbols are used. The difference between the holding device 1b of this embodiment and the first embodiment is at least that the fixed ring 10b further includes two operating structures 18b, and the two operating structures 18b are symmetrically arranged on the outer side 101b of the fixed ring 10b. The operating structure 18b protrudes outward from the outer side 101b of the fixed ring 10b. In this embodiment, when adjusting the focus, force can be directly applied to the two operating structures 18b, and the force is transmitted to the operating member 20 and the lens to be tested 9 through the fixing ring 10b, which can also adjust the lens 9 to be tested. Function relative to the image sensor. Preferably, the length of the operating structure 18b can be longer than the length of the operating portion 23 to increase the structural strength of the operating structure 18b and facilitate the application of force on the operating structure 18b. Preferably, the upper surface of the operating structure 18b can also have an inclined surface 181b to avoid blocking the field of view of the lens 9 to be tested during focusing.

In other embodiments, force can also be applied to the operating portion 23 of the operating member 20 and the two operating structures 18b of the fixed ring 10b at the same time. In other embodiments, in addition to the symmetrically arranged operating structure 18b, an additional operating structure (refer to the operating structure 18a in Figure 7) can also be added at a symmetrical position of the operating portion 23, which is not limited by the present invention.

To sum up, according to the lens holding device of the present invention, through the aforementioned structure, the fixing ring and the operating member can jointly hold the lens to be tested without any engaging structure on the outer wall. In addition, the neck part of the operating part is located between the two limiting protrusions of the fixed ring, and the operating part of the operating part is located outside the fixed ring. Therefore, when force is applied to the operating part, the force can be transmitted to the fixing ring through the neck, thereby adjusting the position of the lens to be tested. That is to say, the fixing ring and the operating member are used to drive the movement of the lens to be tested, so as to adjust the relative position of the lens to be tested and the image sensor, and to perform the focusing process.

It should be noted that the above-mentioned embodiments are examples for convenience of explanation, and the scope of rights claimed by the present invention should be subject to the scope of the patent application, and is not limited to the above-mentioned embodiments.

1, 1a, 1b: Holding device 10, 10a, 10b: Fixed ring 101, 101a, 101b: outside 102:Inside 11: Free end 12, 12a: Opening the mouth 121:Part One 122:Part 2 13: Limiting convex part 131:Limit slot 132:Second guide slope 14: Hollow structure 15: Fixed structure 151: Curved side wall 16: The first engaging part 17:Extended bevel 18a, 18b: Operation structure 181b: Inclined surface 20: Operating parts 21: Fixed part 211: Contact Department 212: Guidance Department 213:First side wall 214:Second side wall 215: First guide slope 22:Neck 23:Operation Department 30: Fixtures 31: Second engaging part 32: Inclined surface 9: Lens to be tested 91: Lateral wall

Figure 1 is a schematic diagram of the holding device and the lens to be tested according to the first embodiment of the present invention. FIG. 2 is an exploded schematic diagram of the holding device and the lens to be tested shown in FIG. 1 . FIG. 3 is a partially enlarged schematic diagram of the assembly of the fixing ring, the operating member and the lens to be tested shown in FIG. 2 . Figure 4 is a bottom view of the holding device shown in Figure 1 and the lens to be tested. FIG. 5A is a top view of the fixing ring shown in FIG. 2 being set on the lens to be tested, and the operating member is inserted into the fixing ring. Figure 5B is a front view of the holding device shown in Figure 5A. Figure 5C is a partially enlarged schematic view of the holding device shown in Figure 5A. FIG. 6 is a schematic diagram after the operating member shown in FIG. 5C moves toward the fixed ring. FIG. 7 is a schematic diagram of the holding device and the lens to be tested according to the second embodiment of the present invention. FIG. 8 is a schematic diagram of the holding device and the lens to be tested according to the third embodiment of the present invention.

1: Holding device

10: Fixed ring

101:Outside

102:Inside

11: Free end

12: Open your mouth

13: Limiting convex part

14: Hollow structure

15: Fixed structure

151: Curved side wall

16: The first engaging part

17:Extended bevel

20: Operating parts

21: Fixed part

22:Neck

23:Operation Department

30: Fixtures

31: Second engaging part

32: Inclined surface

9: Lens to be tested

91: Lateral wall

Claims (14)

A lens holding device used in the focusing process of a lens to be tested. The holding device includes: a fixing ring, which is sleeved on the lens to be tested and abuts against an outer wall of the lens to be tested. The fixing ring It includes: two free ends, which jointly form an opening; and two limiting protrusions, which are respectively provided on the two free ends, and are close to an outside of the fixed ring and protrude in the direction of the opening; and an operating member, from A surface of the fixed ring is inserted into the opening, and the operating member includes: a fixed part for being disposed in the opening; a neck part, one end of which is connected to the fixed part and is located between the two limiting protrusions. ; And an operating part, one end of which is connected to the neck and located on the outside of the fixed ring. The lens holding device of claim 1, wherein the two limiting protrusions form the opening into a first part and a second part, the second part is located between the two limiting protrusions, and the first part The width is greater than the width of the second part. The lens holding device according to claim 1, wherein the fixing part includes a guide part, the neck part is connected to the guide part, and the width of the guide part gradually increases from the neck part toward the direction of the lens to be tested. shrink. The lens holding device according to claim 3, wherein the fixing part further includes a contact part, the guide part is connected to the contact part, and the contact part is in contact with the outer wall of the lens to be tested . The lens holding device according to claim 1, wherein the two limiting protrusions respectively include a guide slope and are close to the outer side of the fixing ring, and the guide slope is inclined toward the direction of the opening. The lens holding device according to claim 1, wherein the fixing part includes a first side wall and a second side wall, the first side wall abuts the outer wall of the lens to be tested, and the second side wall abuts The limiting protrusion is connected to the second side wall. The lens holding device according to claim 6, wherein the two limiting protrusions respectively include a limiting groove, which is disposed on the limiting protrusion and faces the opening, and the second side wall of the fixing part is in contact with the limit slot. The lens holding device of claim 1, wherein the fixing ring includes a hollow structure and at least one fixing structure, the hollow structure is connected to the opening, the fixing structure includes an arc-shaped side wall, and the arc-shaped side wall faces the hollow structure, the lens to be tested is accommodated in the hollow structure, and the arc-shaped side wall of the fixed structure abuts the outer wall of the lens to be tested. The lens holding device of claim 1, wherein the fixing ring includes an extended bevel, the extended bevel is inclined in the direction of the lens to be tested, and a bottom surface of the extended bevel is in contact with an edge of the lens to be tested . The lens holding device of claim 1, wherein the fixing ring includes two first engaging parts, respectively close to the two free ends, and the holding device further includes: a fixing member including two second engaging parts, The two second engaging parts are located on a bottom surface of the fixing member, and the two second engaging parts are accommodated in the two first engaging parts. The lens holding device of claim 10, wherein the fixing ring includes a hollow structure, the lens to be tested is accommodated in the hollow structure, an upper surface of the fixing member is an inclined surface, and the inclined surface moves toward the The direction of the retaining ring is tilted. The lens holding device of claim 1, wherein the fixing ring further includes an operating structure protruding outward from the outside of the fixing ring. The lens holding device according to claim 12, wherein the operating structure is located at a symmetrical position of the opening. The lens holding device of claim 1, wherein the fixing ring further includes two operating structures, the two operating structures are symmetrically arranged on the outside of the fixing ring and protrude outward from the outside of the fixing ring.

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