TWI744146B - Alignment positioning device and method for assembled lens - Google Patents

Abstract

The present invention provides an alignment positioning device and method for assembled lens, comprising an L-shaped wall, an image capture system, a positioning regulation system, and a controlling system. The L-shaped wall accepts the lean against from more than one lens. The image capture system records a continuous image data of more than one lens. The positioning regulation system is arranged at the opening side of the L-shaped wall, and correcting the optical axis of more than one lens. The controlling system controls the image capture system and the positioning regulation system, and analyzes the results of the image data about the more than one lens immediately.

Description

Direct alignment positioning device and method for lens assembly

A lens assembly device, in particular a direct alignment positioning device and method for lens assembly.

An optical lens is an optical element that can disperse or aggregate light. Known optical lenses can be divided into two categories: a convex lens and a concave lens. Each lens has a different focal length and characteristics according to its different shape, curved surface, and material. In response to market demand as small as a smart phone, as large as a precision image capture device, the requirements for the optical components are increasingly lighter and higher quality, resulting in an optical lens composed of more than one lens. The applications of groups are increasing day by day.

During processing and assembling of the optical lens assembly, an optical axis of the more than one lens needs to be accurately corrected so that the optical axis can coincide with a rotational symmetry axis to prevent an eccentricity error of the optical lens assembly. However, in the prior art, the optical lens assembly needs to manually move the one or more lenses one by one during assembly, so that the one or more lenses are aligned with the optical axis and/or the rotational symmetry axis, which makes the overall correction and assembly time long and labor intensive. In addition, since the optical lens assembly needs to rely on manpower when assembling, the imaging quality of the optical lens assembly may be affected due to insufficient accuracy after correction.

In order to overcome the cost of time and manpower during calibration and assembly of an optical lens group, and the technical problem that after calibration, it is easy to cause insufficient accuracy and affect the image quality. The present invention provides a direct alignment positioning device and method for lens assembly, which includes an object loading system, an image capture system, a positioning correction system, and a control system.

Wherein, the carrier system includes a carrier and an L-shaped abutment wall, the carrier includes a hollow area, a top surface of the carrier can be placed more than one lens; the L-shaped abutment wall can be The L-shaped abutting wall is movably disposed on the top surface of the stage, and the L-shaped abutting wall includes an inner wall, and the inner wall abuts against more than one lens.

Wherein, the image capturing system gives more than one lens a light source and continuously shoots and records a continuous image data of more than one lens in real time; the positioning correction system is arranged in the direction of the opening end of the L-shaped abutting wall, and the positioning correction system It includes a calibration module and a positioning module. The calibration module includes an actuating body and a tongue depressor. The actuating body drives the depressor toward or away from the L-shaped abutting wall, and the positioning module drives the calibration The module moves to the relative height of more than one lens.

Wherein, the control system controls the image capturing system and the positioning correction system in real time, and the control system simultaneously analyzes the imaging results and various parameters of more than one lens.

Wherein, the image capturing system includes more than one light source element, at least one light source element is arranged above the top surface of the stage, and at least one light source element is arranged below the bottom surface of the stage.

Further, the positioning module includes a base, a positioning rod, more than one supporting rod, a top seat, a positioning motor, and a torsion member. The top surface of the base is provided with an accommodation groove; the positioning rod includes a threaded section, one end of the positioning rod can movably penetrate into the accommodation groove; one end of each support rod is fixedly combined with the base On the top surface, the positioning rod and one or more supporting rods are parallel to each other; the top seat penetrates a through hole, the other end of each positioning rod can movably penetrate into the through hole, and the top seat and one or more other supporting rods One end is fixedly combined; the positioning motor can drive the positioning rod to rotate; the torsion member is provided with a groove, and the groove is closely matched with the end of the positioning rod passing through the perforation, and the positioning rod rotates according to the torsion direction of the torsion member .

Further, the two supporting rods are respectively arranged on opposite sides of the positioning rod.

Further, the actuating body is arranged between the base and the top seat, and the actuating body includes a positioning hole, more than one supporting hole and a transverse hole. An inner wall of the positioning hole includes a thread, the thread and the threaded section coincide with each other, and the positioning rod is screwed in the positioning hole; the number of more than one support holes is the same as that of more than one support rod, and more than one support rod It can movably pass through more than one supporting hole; the extending direction of the transverse hole is perpendicular to the extending direction of the positioning hole.

Further, the tongue depressor is movably penetrated in the transverse hole; the actuating body includes a correction motor, and the correction motor drives the tongue depressor to move relative to the actuating body.

Further, the actuating body is a pneumatic cylinder.

Further, the control system includes a control module and an imaging module. The control system is electrically connected to the image capturing system, the positioning motor, and the calibration motor. The control module receives the continuous image data recorded by the image capturing system, and transmits the continuous image data to an analysis module And an imaging module. The control module determines the parameters after the analysis and analysis module is completed, and sends instructions to the image capture system, the positioning motor, and the calibration motor. The analysis module receives the continuous After the image data is analyzed, parameters such as an imaging position, a focal length, an optical axis, and a rotational symmetry axis behind more than one lens are analyzed; the imaging module displays the continuous image data and the parameters.

A method of using a lens assembly direct alignment positioning device: inserting the lens and positioning, placing a lens on the stage, the concave lens against the inner wall; adjusting the light source and imaging, the control system controls the image capture The system activates the light source element, determines the light source position and imaging position of the lens through the dynamic photographing unit; determines the optical axis position, and the control system synchronously adjusts the light source element and the dynamic photographing unit to determine an optical axis of the lens Position; insert other lenses and positioning, place a second lens above the lens, and make the second lens the inner wall; adjust the light source and imaging, the control system controls the light source element, through the dynamic shooting unit to determine the right The position of the light source and the imaging position after the lens and the second lens are superimposed; adjust other lenses to overlap the optical axis, the control system synchronously controls the light source element, the dynamic shooting unit and the positioning correction system, and the control system drives the Position the motor to make the correction module move to a relative height of the second lens; the control system drives the actuating body so that the depressing tongue contacts the second lens; the control module is based on the real-time analysis module Analyze, adjust the advancement of the tongue depressor synchronously, until it is determined that the second optical axis position of the second lens overlaps the optical axis position of the lens; cementing, determine the second optical axis position of the second lens and the optical axis position of the lens After the axis positions are overlapped, glue the second optical axis of the second lens with the lens; complete, repeat inserting other lenses and positioning, adjusting the light source and imaging, adjusting other lenses to the overlapping optical axis and cementing, completing the correction and assembly of an optics Lens group.

The direct alignment positioning device and method for lens assembly provided by the present invention have the following advantages: 1. The L-shaped abutting wall can initially position more than one lens, saving time and cost. 2. Using the control system to calibrate more than one lens is more precise, accurate and less time-consuming than manual calibration. 3. When positioning through the control system, the L-shaped abutting wall can be used as a function of abutment, so that the upper and lower overlapping lenses are not easy to move. 4. When the control system makes the pushing and positioning of the tongue depressor, the L-shaped abutting wall can be used as a function of abutment, so that the lens under calibration will not overturn and cause damage to the lens.

Please refer to FIG. 1, which is a schematic diagram of a preferred embodiment of the present invention. It provides a lens assembly direct alignment positioning device, which includes a base, a loading system 10, an image capture system 20, and a positioning correction system 30 And a control system 40. The loading system 10 and the positioning correction system 30 are arranged on the top surface of the base.

The loading system 10 includes a loading platform 11, more than one supporting column 12 and an L-shaped abutting wall 13. The loading platform 11 is a platform including a hollow area. More than one lens A can be placed on a top surface of the stage 11. In this embodiment, the more than one lens A includes a concave lens A1 and a convex lens A2. More than one support 12 is provided on a bottom surface of the stage 11, so that a height space is left between the stage 11 and the base. The L-shaped abutting wall 13 is movably provided on the top surface of the stage 11, and the L-shaped abutting wall 13 can be integrally formed or formed by combining two pieces with each other. When more than one lens A is placed on the carrier In the case of the object table 11, the L-shaped abutting wall 13 includes an inner wall 131, and the inner wall is in abutting contact with more than one lens A. In this embodiment, the concave lens A1 and the inner wall 131 generate two abutting points 132; the convex lens A2 abuts the inner wall 131 to generate two abutting points 133.

The image capturing system 20 includes more than one light source element 21 and a dynamic shooting unit 22. In this embodiment, the two light source elements 21 are respectively disposed above the top surface and below the bottom surface of the stage 11, the light source element 21 can emit a light source, and the light source can penetrate more than one lens A and the The hollow area of the stage 11. The dynamic shooting unit 22 can continuously shoot and record a continuous image data after the light source penetrates more than one lens A in real time. The dynamic shooting unit 22 can be a digital camera or any imaging device capable of recording images.

The positioning correction system 30 is disposed in the direction of the opening end of the L-shaped abutting wall 13, and the positioning correction system 30 includes a positioning module 31 and a correction module 32. The positioning module 31 includes a base 311, a positioning rod 312, more than one supporting rod 313, a top seat 314, a torsion member 315 and a positioning motor 316. The base 311 is disposed above the top surface of the base, and the top surface of the base 311 is provided with an accommodating groove 3111. The positioning rod 312 includes a threaded section 3121, and one end of the positioning rod 312 can movably penetrate into the accommodating groove 3111. One end of the one or more supporting rods 313 is fixedly connected to the top surface of the base 311, and the one or more supporting rods 313 can be engaged with the base 311 by means of engaging or engaging. As described above, the positioning rod 312 and one or more supporting rods 313 are arranged on the top surface of the base 311 in parallel with each other. In this embodiment, the two supporting rods 313 are respectively disposed on opposite sides of the positioning rod 312.

The top seat 314 penetrates a through hole, the other end of the positioning rod 312 can movably penetrate into the through hole, the top seat 314 is fixedly combined with the other end of the one or more supporting rods 313, and the one or more supporting rods 313 can be used for clamping The top seat 314 is engaged with the top seat 314 in a manner of engagement or engagement. The torsion member 315 is provided with a groove, and the groove is tightly matched with the end of the positioning rod 312 passing through the through hole. Rotating the torsion member 315 can make the positioning rod 312 rotate. The positioning motor 316 is disposed in the base 311, and the positioning motor 316 is engaged with the end of the positioning rod 312 penetrating into the accommodating groove 3111, and the positioning motor 316 can drive the positioning rod 312 to rotate.

The calibration module 32 includes an actuator body 321, a tongue depressor 322 and a calibration motor 323. The actuating body 321 is disposed between the base 311 and the top seat 314. The actuating body 321 includes a positioning hole 3211, one or more supporting holes 3212, and a transverse hole 3213. The position of the positioning hole 3211 corresponds to the positioning rod 312. An inner wall of the positioning hole 3211 includes a thread, and the thread and the threaded section 3121 are matched with each other so that the positioning rod 312 can be screwed in the positioning hole 3211. The number of the one or more supporting holes 3212 is the same as that of the one or more supporting rods 313 and the positions are corresponding to each other. The extending direction of the transverse hole 3213 is parallel to the base. In other words, the extending direction of the transverse hole 3213 is perpendicular to the extending direction of the positioning hole 3211 and the supporting holes 3212. Preferably, the position of the transverse hole 3213 is The positioning holes 3211 and the supporting holes 3212 are staggered and not connected to each other.

When the positioning motor 316 drives the positioning rod 312 to rotate clockwise or counterclockwise, since the correction module 32 passes through the support rod 313, the correction module 32 does not rotate with the rotation direction of the positioning rod 312. At the same time, a mutual spiral relationship is formed between the positioning rod 312 and the positioning hole 3211, so that the calibration module 32 can move up or down along the length direction of the positioning rod 312 and the supporting rod 313.

The depressor 322 has a straight rod shape, and the depressor 322 is movably inserted in the transverse hole 3213. The correction motor 323 is disposed in the actuating body 321, and the correction motor 323 is connected to the depressing tongue 322 and drives the depressing tongue 322 to move relative to the actuating body 321, resulting in a staggered relationship.

As shown in FIG. 2, it is a schematic diagram of the second preferred embodiment of the calibration module 32 of the present invention. The difference from the foregoing description is that the actuating body 321 and the calibration motor 323 are separately arranged, and the actuating body A transverse threaded hole penetrates through the 321 parallel to the transverse hole 3213, and a second thread is provided on the inner surface of the transverse threaded hole. The correction motor 323 is connected to a transverse rod 324 corresponding to the transverse threaded hole. The surface of the transverse rod 324 contains a second threaded section 3241. The second thread and the second threaded section 3241 coincide with each other so that the transverse rod 324 can be screwed. In the transverse threaded hole. When the correction motor 323 drives the transverse rod 324 to rotate clockwise or counterclockwise, a mutual spiral relationship is formed between the transverse rod 324, the positioning hole 3211 and the transverse threaded hole, so that the transverse rod 324 can be connected with the pressing tongue 322 The dislocation relationship is generated relative to the actuating body 321.

As shown in FIG. 3, it is a schematic diagram of the third preferred embodiment of the calibration module 32 of the present invention. The difference from the first and second preferred embodiments is that the actuating body 321 is a pneumatic cylinder 321A The pneumatic cylinder 321A can drive the pressing tongue 322 to move relative to the actuating body 321, resulting in the dislocation relationship.

The control system 40 includes a control module 41, an analysis module 42, and an imaging module 43. The control system 40 is electrically connected to the image capturing system 20, the positioning motor 316 and the calibration motor 323. The control module 41 receives the continuous image data recorded by the image capturing system 20 and transmits the continuous image data to the analysis module 42 and the imaging module 43.

After the analysis module 42 receives the continuous image data, it analyzes parameters such as an imaging position, a focal length, an optical axis, and a rotational symmetry axis after the light source penetrates more than one lens A through a set algorithm. The control module 41 further determines the parameters after the analysis by the analysis module 42 is completed, and transmits commands to the image capturing system 20, the positioning motor 316, and the calibration motor 323. The imaging module 43 displays the continuous image data and the aforementioned parameters, so that the control system 40 can instantly display and record the imaging results and various parameters of more than one lens A before correction, current correction, and correction.

Please refer to Fig. 4 and Fig. 5, the method of using the direct alignment positioning device of the lens assembly and the step 50 are: 1. Insert the lens and position 51, place the concave lens A1 on the stage 11, and make the The concave lens A1 abuts against an inner wall 131 of the L-shaped abutment wall 13 to generate two A1 abutment points 132. 2. Adjust the light source and imaging 52, and the control system 40 controls the light source element of the image capturing system 20 21, and determine the position of the light source and the imaging position of the concave lens A1 through the dynamic photographing unit 22. 3. Determine the optical axis position 53, the control system 40 synchronously adjusts the position of the light source element 21 emitting light source and the shooting focal length of the dynamic shooting unit 22, and determines the optical axis position of the concave lens A1. 4. Place other lenses and position 54, place the convex lens A2 above the concave lens A1, and make the convex lens A2 abut the inner wall 131 of the L-shaped abutment wall 13, creating two A2 abutment points 133 5. Adjusting the light source and imaging 55, the control system 40 controls the light source element 21 of the image capturing system 20, and determines the position of the light source and imaging of the concave lens A1 and the concave lens A1 after being superimposed through the dynamic shooting unit 22 Location. 6. Adjust other lenses to overlap the optical axis 56, and the control system 40 synchronously controls the light source element 21, the dynamic shooting unit 22 and the positioning correction system 30. The control system 40 drives the positioning motor 316 to move the correction module 32 to a relative height of the convex lens A2, and can also move the correction module 32 to a height near the convex lens A2 through the torsion member 315, and then The correction module 32 is moved to the relative height of the convex lens A2 by driving the positioning motor 316. Then, the control system 40 drives the correction motor 323/the pneumatic cylinder 321A so that the pressing tongue 322 contacts the convex lens A2. In this step, the control module 41 will synchronously perform the analysis according to the real-time analysis of the analysis module 42 The adjustment of the correction motor 323/the pneumatic cylinder 321A and the advancement of the pressing tongue 322 until it is determined that the position of the convex lens A2 overlaps with the position of the optical axis of the concave lens A1. 7. Cement 57. After confirming that the position of the convex lens A2 overlaps with the position of the optical axis of the concave lens A1, cement the convex lens A2 and the concave lens A1. 8. Finish 58, repeat inserting other lenses and positioning 54, adjust the light source and Image 55, adjust other lenses to overlap optical axis 56 and glue 57, complete the correction and assemble an optical lens group.

The direct alignment positioning device and method for lens assembly have the following advantages: 1. The L-shaped abutting wall 13 can initially position more than one lens A, saving time and cost. 2. Using the control system 40 to calibrate more than one lens A is more precise, accurate and less time-consuming than manual calibration. 3. When the positioning motor 316 and the correction motor 323/the pneumatic cylinder 321A are driven to be positioned by the control system 40, the L-shaped abutting wall 13 can be used as a function of abutment, so that more than one lens A is superimposed. It is not easy to move. 4. The control system 40 drives the correction motor 323/the pneumatic cylinder 321A so that the L-shaped abutment wall 13 can be used as a function of abutment when the tongue depressor 322 is pushed and positioned, so that the lens A in the correction is not As for the overturning, the lens A is damaged.

10: Loading system

11: Stage

12: Support column

13L: Type against the wall

131: Inner Wall

132A1: Abutment point

133A2: Abutment point

20: Image capture system

21: Light source components

22: Dynamic shooting unit

30: Positioning correction system

31: Positioning module

311: Base

3111: accommodating slot

312: positioning rod

3121: thread section

313: Support Rod

314: Top Seat

315: Torsion

316: positioning motor

32: Calibration module

321: Actuation Body

321A: Pneumatic cylinder

3211: positioning hole

3212: Support hole

3213: Horizontal hole

322: Confession

323: Correction motor

324: horizontal rod

3241: second thread segment

40: control system

41: Control Module

42: Analysis Module

43: imaging module

A: Lens

A1: Concave lens

A2: Convex lens

Figure 1 is a schematic diagram of the preferred embodiment of the present invention Figure 2 is a schematic diagram of a second preferred embodiment of the calibration module of the present invention Figure 3 is a schematic diagram of a third preferred embodiment of the calibration module of the present invention Figure 4 is a top view of a partial position of the preferred embodiment of the present invention Figure 5 is a flow chart of the preferred embodiment of the present invention

10: Loading system

11: Stage

12: Support column

13: L-shaped against the wall

132: A1 abutment point

133: A2 abutment point

20: Image capture system

21: Light source components

22: Dynamic shooting unit

30: Positioning correction system

31: Positioning module

311: Base

3111: accommodating slot

312: positioning rod

3121: thread section

313: Support Rod

314: Top Seat

315: Torsion

316: positioning motor

32: Calibration module

321: Actuation Body

3212: Support hole

3213: Horizontal hole

322: Confession

323: Correction motor

40: control system

41: Control Module

42: Analysis Module

43: imaging module

A: Lens

A1: Concave lens

A2: Convex lens

Claims (9)

A direct-alignment positioning device for lens assembly, comprising: an object loading system, the loading system including: an object platform, including a hollow area, a top surface of the object platform can be placed more than one lens; an L-shaped The abutting wall, the L-shaped abutting wall includes an inner wall that abuts against more than one lens; an image capturing system that gives more than one lens a light source and continuously shoots and records in real time One continuous image data of more than one lens; a positioning correction system, the positioning correction system is arranged in the direction of the opening end of the L-shaped abutting wall, the positioning correction system includes: a correction module, the correction module includes an actuator body And a tongue depressor, the actuating body drives the depressor tongue toward or away from the L-shaped abutting wall; and a positioning module that drives the correction module to move to the relative height of more than one lens; and A control system that controls the image capturing system and the positioning correction system in real time, the control system synchronously analyzes the imaging results of more than one lens and various parameters, and the positioning correction system is based on the imaging of more than one lens As a result, it is determined that one of the optical axes of each of the lenses and the positioning correction system is driven to correct each of the lenses to the overlap of the positions of the optical axes of each of the lenses. The direct-alignment positioning device for lens assembly according to claim 1, wherein the image capturing system includes more than one light source element, at least one light source element is arranged above the top surface of the stage, and at least one light source element is arranged on Below the bottom surface of one of the stages. According to the direct-alignment positioning device for lens assembly according to claim 1 or 2, the positioning module includes: a base, and a top surface of the base is provided with a accommodating groove; A positioning rod, the positioning rod includes a threaded section, one end of the positioning rod can movably penetrate into the accommodating groove; more than one support rod, one end of each support rod is fixedly connected to the top of the base Surface, the positioning rod and one or more supporting rods are parallel to each other; a top seat, the top seat penetrates a through hole, the other end of the positioning rod can movably penetrate the through hole, the top seat and more than one supporting rod The other end is fixedly combined; a positioning motor which can drive the positioning rod to rotate; and a torsion member provided with a groove which closely fits with the end of the positioning rod passing through the through hole, the The positioning rod rotates in accordance with the twisting direction of the twisting member. The direct alignment positioning device for lens assembly according to claim 3, wherein a total of two supporting rods are respectively arranged on opposite sides of the positioning rod. In the direct alignment positioning device for lens assembly according to claim 3, the actuating body is disposed between the base and the top seat, the actuating body includes: a positioning hole, and one of the inner walls of the positioning hole includes a thread , The thread and the threaded section coincide with each other, the positioning rod is screwed in the positioning hole; there is more than one supporting hole, the number of more than one supporting hole is the same as that of the more than one supporting rod, and the more than one supporting rod can movably pass through In one or more of the supporting holes; and one transverse hole, the extending direction of the transverse hole is perpendicular to the extending direction of the positioning hole. In the direct alignment positioning device for lens assembly according to claim 5, the depressor is movably inserted in the transverse hole; the actuating body includes a correction motor, and the correction motor drives the depressor relative to the actuation Body movement. In the direct alignment positioning device for lens assembly as described in claim 6, the actuating body is a pneumatic cylinder. According to claim 7 of the direct-alignment positioning device for lens assembly, the control system includes: A control module, the control system is electrically connected to the image capturing system, the positioning motor and the calibration motor, the control module receives the continuous image data recorded by the image capturing system, and transmits the continuous image data To an analysis module and an imaging module, the control module determines the parameters after the analysis module is completed, and sends commands to the image capturing system, the positioning motor, and the calibration motor, the analysis module After receiving the continuous image data, the group analyzes parameters such as an imaging position, a focal length, the optical axis, and a rotational symmetry axis behind more than one lens; and an imaging module that displays the continuous image data and all parameters. The parameters described. A method and steps for using a lens assembly direct alignment positioning device: inserting the lens and positioning, placing a lens on a stage, the lens abutting against an inner wall; adjusting the light source and imaging, and a control system controls an image The capture system activates a light source element, determines the position of the light source and the imaging position of the lens through a dynamic shooting unit; determines the position of the optical axis, and the control system synchronously adjusts the light source element and the dynamic shooting unit to determine one of the lens Position of the optical axis; insert other lenses and positioning, place a second lens above the lens, and make the second lens abut the inner wall; adjust the light source and imaging, the control system controls the light source element through the dynamic The photographing unit determines the position of the light source and the imaging position after superimposing the lens and the second lens; adjusting other lenses to the overlapping optical axis, the control system synchronously controls the light source element, the dynamic photographing unit and the positioning correction system, the The control system drives a positioning motor to move a correction module to a relative height of the second lens; the control system drives the actuating body so that a tongue depressor contacts the second lens; the control module is based on an analysis module The real-time analysis of the second lens, the advancement of the tongue depressor is adjusted synchronously, until it is determined that the second optical axis position of the second lens overlaps the position of the optical axis of the lens; cementing determines the second optical axis position of the second lens and the position of the lens After the position of the optical axis overlaps, cement the second optical axis of the second lens with the lens; Finish, repeat inserting other lenses and positioning, adjusting the light source and imaging, adjusting other lenses to overlap the optical axis and gluing, completing the correction and assembling an optical lens group.

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