TWM592075U - Optical quality detecting device of lens - Google Patents

Abstract

This creation provides a lens optical quality detection device, including a base, a support unit and a sensing unit. The base has a bearing member capable of carrying the sensing unit. The support unit is provided on the base. The support unit has a shaft member, a link member and a first power source. The link member is connected to the shaft member at one end and a light source is provided at the other end. When the first power source drives When the shaft rotates, the rotation of the shaft causes the linkage to drive the light source to swing, and the light source can maintain the preset position of the light shining on the surface of the lens when swinging. The sensing unit has a rotating member, a second power source, and an image sensor. The rotating part is used to place the lens, and the second power source can drive the rotating part to rotate, so that the rotating part drives the lens to rotate. Therefore, the optical quality detection device of the lens not only can make the light source shine on the preset position of the lens, but also can target different The angle of incidence and the multiple axis surfaces of the lens are detected to improve the accuracy of optical quality detection.

Description

Lens optical quality detection device

This creation is about an optical quality detection device, especially an optical quality detection device for a lens.

With the advancement of technology, optical lenses have been widely used in daily life, such as mobile phone lenses, cameras, and driving recorders such as driving recorders, lane departure warning systems, and driving vision assist systems. Stray light is easily caused by the optical lens under strong light. Stray light is unnecessary or extra derivative light in the optical system, which will not only reduce the image contrast and imaging quality, but also lead to the occurrence of light spots in the imaging, which requires high accuracy. If the stray light phenomenon occurs in the high-sensitivity driving assistance system, it may cause the vehicle computer to make a wrong judgment or affect the driving field of view, thereby endangering the driving safety.

Therefore, after the lens is manufactured, the manufacturer will detect the stray light of the lens to monitor the quality of the lens or perform subsequent analysis and improvement. The conventional method of stray light detection is to hold the light source (such as a flashlight) or the lens in the dark room and illuminate the light source on the lens. A specific position on the surface of the lens to observe whether there is stray light. However, it is difficult to control the angle of the light source irradiating the lens with the hand-held method, and it is more difficult to keep the light source irradiating a specific position on the lens surface, which may affect the accuracy of stray light detection, thereby affecting the quality monitoring of the lens or subsequent analysis and improvement. Furthermore, for driving assistance systems that require high accuracy and sensitivity, the detection of lens stray light is crucial. If the lens stray light cannot be accurately detected to ensure the quality of the lens, driving safety may be endangered. Solve improvement.

One of the objectives of this creation is to provide a lens optical quality detection device that can control the angle at which the light source illuminates the lens and enable the light source to illuminate a specific location on the lens surface to increase the accuracy of stray light detection.

To achieve the above purpose, the present invention provides a lens optical quality detection device that uses a light source to illuminate a lens for detection. The lens optical quality detection device includes a base, a support unit, and a sensing unit; the base has a The support unit; the support unit is disposed on the base, the support unit has a linking member and a first power source, one end of the linking member is provided with the light source, the first power source rotates the linking member along an axis, and then drives The light source swings; the bearing member of the base carries the sensing unit, the sensing unit has a rotating member, a second power source, and an image sensor, the rotating member is provided for placing the lens, and the rotating member has a A perforation, the perforation penetrates the rotating element, the image sensor is located at one end of the perforation, the second power source drives the rotating element to rotate, and the rotating element drives the lens to rotate; wherein, the axis passes through one of the lens The position is set, and the light source can keep illuminating the preset position when swinging.

In some cases, the lens optical quality detection device further has an adjustment seat, the adjustment seat has a pushing member and a third power source, the bearing member of the base is disposed at one end of the pushing member, and the third power source The pushing member is driven to move along a first direction to drive the carrier, the sensing unit and the lens to move along the first direction relative to the base.

In some cases, when the position of the light source irradiating the lens surface deviates from the preset position of the lens surface, the pushing member of the adjustment base can be displaced in the first direction, so that the light source illuminates the preset position position.

In some cases, the sensing unit further has a carrier carrying the rotating member, the perforation of the rotating member penetrates the carrier, and the rotating member can rotate relative to the carrier.

In some cases, the supporting unit further has a shaft member, the linking member is connected to the shaft member, the first power source drives the shaft member to rotate, and then the linking member drives the light source to swing.

In some cases, the linking member has a first connecting portion and a second connecting portion, the first connecting portion extends radially from the shaft in a rod shape or a plate shape, and one end of the second connecting portion is connected to the The first connection part and the other end of the second connection part are provided with the light source.

In some cases, the supporting unit further has a supporting member, the supporting member has a groove, and the linking member can be displaced in the groove.

In some cases, the lens optical quality detection device further has a processing unit, and the image sensor generates a signal and outputs it to the processing unit for analysis.

In this way, the lens optical quality detection device provided by this creation can drive the linkage member to move by the rotation of the shaft member, so that the light source on the linkage member swings to irradiate a predetermined position on the lens surface at different incident angles, Detect the optical quality of the lens, such as stray light, focal plane, resolution, focal length, etc. In addition, the rotating member can drive the lens to rotate at different angles, so that the light source can illuminate different axis surfaces inside the lens. Therefore, the lens optics of this creation The quality detection device can not only control the incident angle of the light source, but also enable the light source to maintain the preset position of the lens when oscillating, thereby increasing the accuracy of detection.

Please refer to FIG. 1 and FIG. 2, the first embodiment of the present invention discloses a lens optical quality detection device, which uses a light source to illuminate the lens for detection. In this implementation, the lens optical quality detection device is used to detect the stray light of the lens. In other possible embodiments of the present creation, the lens optical quality detection device may also be used to detect other optics such as the focal plane, resolution or focal length of the lens Quality is also essential. The lens optical quality detection device includes a base 10, a support unit 20, a sensing unit 30, an adjustment base 40, a box 50, and a processing unit.

The base 10 has a carrier 11. The carrier 11 has a flat plate shape. The supporting unit 20 is disposed on the base 10. The carrier 11 carries the sensing unit 30.

The support unit 20 has a shaft member 21, a link member 22, a first power source, and a support member 23. The link member 22 has a curved rod shape, and one end of the link member 22 is connected to the shaft member 21. The link member 22 has a first connecting portion 221 and The second connecting portion 222, the first connecting portion 221 extends radially from the shaft 21, one end of the second connecting portion 222 is connected to the first connecting portion 221, the other end of the second connecting portion 222 is provided with a light source 80, and the first power source drives the shaft The member 21 rotates, which in turn drives the interlocking member 22 to rotate. The first power source is, for example, a motor and its transmission mechanism. The shaft member 21 passes through the support member 23 and can rotate relative to the support member 23. The support member 23 has a groove 231 to accommodate The linking member 22 can be displaced in the groove 231.

Please refer to FIG. 1 and FIG. 4, the sensing unit 30 has a rotating member 31, a carrier 32, a second power source, and an image sensor 33. The rotating member 31 and the carrier 32 are both in a hollow cylindrical shape, and the rotating member 31 and the image sensor 33 are respectively located on both end surfaces of the carrier 32. The carrier 32 is used to carry the rotating member 31, and the rotating member 31 has a perforation 311 which penetrates the rotating member 31 axially and penetrates the carrier 32 downward. The rotating member 31 carries the lens 90. The lens 90 and the image sensor 33 respectively cover the openings at both ends of the through hole 311. The second power source is, for example, a motor and a transmission mechanism thereof to drive the rotating member 31 to rotate relative to the stage 32.

Please refer to FIG. 1 and FIG. 2, the adjustment base 40 has a pushing member 41 and a third power source, the carrier 11 of the base 10 is disposed at one end of the pushing member 41, and the third power source is, for example, a motor and its transmission mechanism to drive The pushing member 41 is displaced in the first direction (Z direction in this embodiment) to push the carrier 11 to be displaced in the first direction relative to the base 10.

The box 50 is disposed above the base 10, and the box 50 has an accommodating space for accommodating the support unit 20 and the sensing unit 30. The box 50 enables the lens to perform stray light detection in a dark environment to avoid irrelevant The light source interferes with the detection result.

The lens optical quality detection device of the present invention utilizes the light source 80 on the link to illuminate a preset position on the surface of the lens 90. As shown in FIG. 3, in this embodiment, the preset position of the lens refers to the lens At the center of the upper surface, the light emitted by the light source 80 penetrates the lens 90 from the preset position of the lens 90, passes through the perforation 311, and is received by the image sensor.

Please refer to Figures 1 and 3, when it is necessary to observe whether the lens has stray light under different incident angles, the first power source can be used to drive the shaft 21 to rotate, and the rotation of the shaft 21 causes the linkage 22 to rotate The center line of the member 21 is the axis of rotation, thereby changing the angle at which the light source 80 illuminates the preset position of the lens 90, so as to observe the stray light situation of the lens 90 at different incident angles. Further, since the linking member 22 rotates along the axis, the light source 80 on the linking member 22 also swings in an arc with the axis as the center. Therefore, as long as the light emitted by the light source 80 and the axis intersect the lens 90, By setting the position, the light source 80 can maintain the preset position of the lens 90 when swinging, that is, as long as the axis of the link 22 rotates through the preset position of the lens 90, and the light emitted by the light source 80 passes The preset position of the lens 90, when the linking member 22 drives the light source 80 to swing, the light emitted by the light source 80 can swing and irradiate along an axis within the lens 90 using the preset position of the lens 90 as a fulcrum, and then the lens 90 can be observed Stray light on this axis. It should be noted that the axial surface of the lens refers to the surface inside the lens that contains the axis of the lens. In addition, the supporting member 23 can increase the stability of the linking member 22 when it rotates, and prevent the linking member 22 from shaking when rotating.

According to the above, please refer to FIG. 4, after the light source 80 swings and irradiates an axis surface inside the lens 90, the second power source drives the rotating member 31 to rotate, so that the lens 90 rotates by an angle, and then, rotates the linking member to make the light source 80 can irradiate the preset position of the lens 90 from different incident angles, whereby the light emitted by the light source 80 can be irradiated with the preset position of the lens 90 as a fulcrum and swing along the other axis inside the lens 90 to observe the lens 90 Stray light on the other axis.

It is worth mentioning that, since the light source 80 can irradiate the preset position of the lens 90 at different incident angles, and the rotating member 31 can rotate the lens 90 at different angles, as the lens 90 rotates to different angles, the light source 80 emits The light can take the preset position of the lens 90 as a fulcrum, and swing and irradiate along different axis surfaces inside the lens 90. Therefore, the optical quality detection device of the lens of this creation enables the light emitted by the light source 80 to use the preset position of the lens 90 as a fulcrum Radiation is radiated inside the lens to detect stray light for different angles of incidence and more than 90 axial surfaces of the lens.

Please refer to FIG. 5, since different lenses may have different sizes and thicknesses, when the different lenses are replaced and tested, the illumination of the light source 80 may deviate from the preset position of the lens. In this case, the The three power sources drive the pushing member 41 to move in the first direction, thereby driving the carrier 11, the supporting unit 30, and the lens to move in the first direction to adjust the distance between the lens and the light source 80, so that the light source 80 maintains the pre-irradiation of the lens Set location. In addition, since the lens optical quality detection device of the present invention has a processing unit (such as a computer), the signal generated by the image sensor 33 can be output to the processing unit for analysis. When the processing unit analyzes the image, it is found that the illumination of the light source 80 deviates The preset position of the lens, the processing unit can adjust the position of the lens by controlling the lifting of the pushing member 41 of the adjustment base 40, so that the light source 80 can irradiate the preset position of the lens, therefore, the lens optical quality detection device of the present creation can The processing unit controls the elevation of the adjustment base 40 to change the position of the lens, thereby achieving the effect of automatic correction, improving the detection efficiency and maintaining the detection accuracy. However, in other possible embodiments of the present invention, it is necessary to provide a lifting device between the support unit and the base to change the position of the light to perform automatic correction.

Please refer to FIG. 6, the lens optical quality detection device of the second embodiment of the present invention is substantially the same as the first embodiment shown in FIGS. 1 to 5, except that the base 10 has an accommodating groove 12 and the linkage The first connecting portion 221 is changed into a plate shape, so the second embodiment uses the element symbol of the first embodiment in principle. For other descriptions of the second embodiment, please refer to the relevant description of the first embodiment. The first connecting portion 221 of the second embodiment of the present invention is inserted into the accommodating groove 12 and can rotate in the accommodating groove 12, and the second connecting portion 222 protrudes from the first connecting portion 221 when the shaft 21 During the rotation, the first coupling portion 221 can be driven to rotate synchronously, which in turn can drive the light source 80 to swing, which has a similar use effect as the first embodiment. In this creative embodiment, the first connecting portion is in the shape of a circular plate. In other possible embodiments of the creative, the first connecting portion may also be in the shape of a semi-circular plate, a fan shape, or other shapes.

In the above embodiments, the lens optical quality detection device uses the adjustment base to lift the lens to change the distance between the lens and the light source. In other possible embodiments of the present creation, the lens optical quality detection device may not have an adjustment base, and Instead, the image sensor is equipped with a fourth power source, such as a motor and its transmission mechanism, whereby the fourth power source can drive the image sensor up and down, so that the image sensor drives the stage and the lens together Lifting up and down to change the distance between the lens and the light source has a similar effect to the above embodiment. In addition, when the lens optical quality detection device has the above fourth power source, a fifth power source may be further installed on the stage. The fifth power source is, for example, a motor and its transmission mechanism to be driven by two power sources, respectively The image sensor and the stage move up and down, and the lens moves up and down with the stage, and the lens and the image sensor can be moved independently, or the distance between the lens and the image sensor can be adjusted.

In the above embodiments, the first connecting portion of the linking member extends radially from the shaft. In other possible embodiments of the present creation, the first connecting portion of the linking member may also extend from the shaft in other directions, as long as the shaft The piece can drive the linking piece to rotate, and the light source on the linking piece can illuminate the preset position of the lens. This creation is not limited to this.

In the above embodiment, the sensing unit has a stage. In other possible embodiments of the present invention, the sensing unit may not have a stage, and the lens and the image sensor are located on the upper and lower sides of the rotating member, respectively. Nothing.

In the above embodiments, the lens optical quality detection device has a box. In other possible embodiments of the present invention, the lens optical quality detection device may not have a box. As long as the lens optical quality detection device is placed in a dark room, it can still be The lens is detected in a dark environment, and has a similar use effect to the above embodiment.

In the above embodiment, the adjusting base has a third power source. In other possible embodiments of the present creation, the adjusting base may not have a third power source and the lifting member may be manually moved up and down, and the lens can still be adjusted by adjusting the lens. The position of the light source is such that the light source illuminates the preset position of the lens, which has a correction effect similar to that of the above embodiment.

In summary, the present invention provides a lens optical quality detection device, which can make the linking member drive the light source to illuminate the preset position of the lens at different incident angles when the shaft rotates, so that the light emitted by the light source can be preset by the lens The position is a fulcrum and swings and irradiates along an axis inside the lens to detect the occurrence of stray light on the axis inside the lens. In addition, the rotating part of the optical quality detection device of the lens can drive the lens to rotate an angle so that the light can move along The other axis inside the lens is oscillated and irradiated. Therefore, with different rotation angles of the lens, the light can be oscillated and irradiated on different axis surfaces inside the lens, thereby detecting the occurrence of stray light on different axis surfaces of the lens, that is, The lens optical quality detection device of this creation not only enables the light source to illuminate the preset position of the lens, but also performs stray light detection for different incident angles and multiple axis surfaces of the lens, improving the accuracy of stray light detection. The lens optical quality detection device provided by the creation can be used to detect the stray light of the lens, and can also be used to detect other optical qualities such as the focal plane, resolution, or focal length of the lens. However, the above embodiments are only for illustration and description of the creation Technical content, the patent scope of this patent shall be subject to the patent application scope described later.

10: Base 11: Carrier 12: accommodating slot 20: Support unit 21: Shaft 22: linkage 221: First connection part 222: Second connection part 23: Support 231: Groove 30: Sensing unit 31: Rotating parts 311: Piercing 32: stage 33: Image sensor 40: Adjust seat 41: Pusher 50: cabinet 80: light source 90: lens

FIG. 1 is a perspective view of the lens optical quality detection device of the first embodiment. FIG. 2 is a side view of the lens optical quality detection device of the first embodiment. FIG. 3 is a schematic diagram of the light source swing of the lens optical quality detection device of the first embodiment of the invention. FIG. 4 is a schematic diagram of the lens rotation of the lens optical quality detection device of the first embodiment of the invention. FIG. 5 is a schematic diagram of the lens lift of the lens optical quality detection device of the first embodiment of the creation. FIG. 6 is a perspective view of the lens optical quality detection device of the second embodiment.

10: Base

30: Sensing unit

11: Carrier

31: Rotating parts

20: Support unit

311: Piercing

21: Shaft

32: stage

22: linkage

33: Image sensor

221: First connection part

40: Adjust seat

222: Second connection part

50: cabinet

23: Support

80: light source

231: Groove

Claims (10)

A lens optical quality detection device uses a light source to illuminate a lens for detection. The lens optical quality detection device includes: A base, the base has a bearing; A supporting unit, the supporting unit is disposed on the base, the supporting unit has a linking member and a first power source, one end of the linking member is provided with the light source, the first power source rotates the linking member along an axis, and Drive the light source to swing; A sensing unit, the bearing member of the base carries the sensing unit, the sensing unit has a rotating member, a second power source and an image sensor, the rotating member is used to place the lens, the rotating member has A perforation, the image sensor is located at one end of the perforation, the second power source drives the rotating member to rotate, so that the rotating member drives the lens to rotate; Wherein, the axis passes through a preset position of the lens, and the light source can keep illuminating the preset position when swinging. The lens optical quality detection device as described in item 1 of the patent application scope, wherein the lens optical quality detection device further has an adjustment seat, the adjustment seat has a pushing member, and the bearing member of the base is disposed at one end of the pushing member, The pushing member can be displaced along a first direction to drive the carrier, the sensing unit and the lens to move relative to the base along the first direction. The lens optical quality detection device as described in item 2 of the patent application scope, wherein the adjustment base further has a third power source, and the third power source drives the pushing member to move along the first direction. The lens optical quality detection device as described in item 2 or item 3 of the patent application scope, wherein when the position of the light source irradiating the lens surface deviates from the preset position of the lens surface, the pushing member of the adjustment base can The displacement in the first direction causes the light source to illuminate the preset position. The lens optical quality detection device as described in item 1 of the patent application scope, wherein the sensing unit further has a carrier, the carrier carries the rotating member, the perforation of the rotating member penetrates the carrier, the rotating member can Relative to the stage. The lens optical quality detection device as described in item 1 of the patent application scope, wherein the support unit further has a shaft member, the linking member is connected to the shaft member, and the first power source drives the shaft member to rotate, thereby driving the linking member The light source swings. The lens optical quality detection device as described in item 6 of the patent application range, wherein the linking member has a first connecting portion and a second connecting portion, the first connecting portion extends radially from the shaft, and the second connection One end of the part is connected to the first connection part, and the other end of the second connection part is provided with the light source. The lens optical quality detection device as described in item 7 of the patent application range, wherein the first connecting portion of the linking member extends radially from the shaft member in a rod shape or a plate shape. The lens optical quality detection device as described in item 1 of the patent application range, wherein the support unit further has a support member, the support member has a groove, and the linking member can be displaced in the groove. The lens optical quality detection device as described in item 1 of the patent scope, wherein the lens optical quality detection device further has a processing unit, and the image sensor generates a signal and outputs it to the processing unit for analysis.

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