CN215581490U - Lens detection device - Google Patents
Lens detection device Download PDFInfo
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- CN215581490U CN215581490U CN202120577163.1U CN202120577163U CN215581490U CN 215581490 U CN215581490 U CN 215581490U CN 202120577163 U CN202120577163 U CN 202120577163U CN 215581490 U CN215581490 U CN 215581490U
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Abstract
The utility model provides a lens detection device which mainly comprises a carrying platform, at least one first light-emitting unit, a plurality of second light-emitting units and a light sensing unit. The carrier is used for placing at least one lens to be tested, wherein the lens to be tested has a visual angle. The first light-emitting unit is located in the visual angle of the lens to be detected and used for projecting a first detection light beam to the lens to be detected. The second light-emitting unit is located outside the view angle of the lens to be detected and used for projecting a second detection light beam to the lens to be detected. The light sensing unit is used for receiving the first detection light beam and the second detection light beam which pass through the lens to be detected so as to detect the quality of the lens to be detected and whether the lens to be detected is polluted by particles.
Description
Technical Field
The utility model relates to a lens detection device which is used for detecting the quality of a lens to be detected and whether the lens to be detected is polluted by particles.
Background
With the development of technology, the requirements of various industries on the specifications of optical lenses are becoming more and more stringent, and as the size of the lenses is getting smaller, the conventional lens inspection method and apparatus also gradually encounter some bottlenecks.
For example, when a lens under test is to be tested for Modulation Transfer Function (MTF), one of the conventional detection methods is an orthographic projection detection method, in which a pattern generating device of a lens detection apparatus provides pattern light spots and emits pattern light beams on an imaging surface of the lens under test, and further the lens under test provides the light beams to an image sensor (e.g., a camera) to enable the image sensor to obtain images, so that the images can be further analyzed to detect the quality (e.g., resolution, contrast) of the lens.
Although the lens detection can be completed by the above method, the above detection method still has its limitations and may affect the detection accuracy.
SUMMERY OF THE UTILITY MODEL
The method aims to improve the accuracy of lens detection and make up for the defects of the prior art. The utility model provides a novel lens detection device, which is mainly characterized in that at least one first light-emitting unit is arranged in the visual angle of a lens to be detected, at least one second light-emitting unit is arranged outside the visual angle of the lens to be detected, and a detection light beam is projected to the lens to be detected through the first light-emitting unit and the second light-emitting unit so as to complete the detection of the lens to be detected.
An objective of the present invention is to provide a lens detecting device, which mainly includes at least one lens to be detected, at least one first light-emitting unit, at least one second light-emitting unit, and an optical sensing unit, wherein the first light-emitting unit and the second light-emitting unit are disposed on an incident side of the lens to be detected, and the optical sensing unit is disposed on an emergent side of the lens to be detected. The first and second light emitting units project the detection light beam to the lens to be detected, and the light sensing unit receives the detection light beam penetrating through the lens to be detected.
The first light-emitting unit is positioned in the visual angle of the lens to be measured, and the second light-emitting unit is positioned outside the visual angle of the lens to be measured. The first light-emitting unit positioned in the visual angle and the second light-emitting unit positioned outside the visual angle are used for detecting, so that the accuracy of lens detection is improved, and whether particles and other pollution exist on the lens can be easily seen.
An objective of the present invention is to provide a device for inspecting a lens to be inspected, wherein a first fixing frame is disposed directly above the lens to be inspected, and a plurality of second fixing frames are disposed obliquely above the lens to be inspected. The first light-emitting unit is arranged on the first fixing frame, and the second light-emitting unit is arranged on the second fixing frame. The second light-emitting units arranged on the second fixing frame can form a virtual sphere, and the lens to be tested is positioned at the sphere center of the virtual sphere.
The second fixing frame can be arranged on a seat body through the sliding rail or the fixing groove, wherein the second fixing frame can move relative to the lens to be detected along the sliding rail or the fixing groove so as to change the distance and the included angle between the second light-emitting unit and the lens to be detected. In addition, the second fixing frame can also be provided with a sliding rail or a fixing groove, and the second light-emitting unit can move along the sliding rail or the fixing groove of the second fixing frame so as to change an included angle between the second light-emitting unit and the lens to be detected.
In order to achieve the above object, the present invention provides a lens inspection apparatus, including: a carrier for placing at least one lens to be tested, wherein the lens to be tested has a visual angle, a first end and a second end; the first light-emitting unit is positioned in the visual angle of the lens to be detected and used for projecting a first detection light beam to the first end of the lens to be detected; the plurality of second light-emitting units are positioned outside the visual angle of the lens to be detected and used for projecting a second detection light beam to the first end of the lens to be detected; and the light sensing unit is positioned at the second end of the lens to be detected, wherein the first detection light beam and the second detection light beam which penetrate through the lens to be detected are used for being projected on the light sensing unit.
The lens detection device comprises a first fixing frame which is positioned at the first end of the lens to be detected and is used for bearing a first light-emitting unit.
The lens detection device comprises a plurality of second fixing frames which are positioned at one side of the lens to be detected and are used for bearing the second light-emitting units.
In the lens detection device, the second fixing frame comprises at least one guide unit, and the second light-emitting unit moves along the guide unit to adjust an included angle between the second detection light beam and the lens to be detected.
The lens detection device comprises a first driving unit connected with the first fixing frame and used for driving the first fixing frame and the first light-emitting unit to move relative to the lens to be detected on the carrying platform so as to change the distance between the first light-emitting unit and the lens to be detected.
In the lens detection device, the number of the lenses to be detected is plural, and the carrier comprises a plurality of placing holes for placing the plural lenses to be detected respectively.
The lens detection device comprises a second driving unit which is used for driving the carrying platform and the lens to be detected to move relative to the first light-emitting unit and the second light-emitting unit, so that the first detection light beam and the second detection light beam generated by the first light-emitting unit and the second light-emitting unit are projected on different lenses to be detected of the carrying platform.
The lens detection device comprises a third driving unit connected with the light sensing unit and used for adjusting the distance between the light sensing unit and the lens to be detected.
In the lens detection device, the second fixing frame is connected with a base body through a slide rail and moves relative to the base body along the slide rail.
The utility model has the beneficial effects that: a novel lens detection device is provided, wherein at least one first light-emitting unit is arranged in the visual angle of a lens to be detected, at least one second light-emitting unit is arranged outside the visual angle of the lens to be detected, and a detection light beam is projected to the lens to be detected through the first light-emitting unit and the second light-emitting unit so as to complete the detection of the lens to be detected.
Drawings
Fig. 1 is a schematic structural diagram of a lens inspection apparatus according to an embodiment of the utility model.
Fig. 2 is a schematic structural diagram of a lens inspection device according to another embodiment of the utility model.
Fig. 3 is a schematic structural diagram of a lens inspection device according to another embodiment of the utility model.
Fig. 4 is a top view of another embodiment of the lens inspection device of the present invention.
Description of reference numerals: 10-lens detection means; 11-a stage; 111-placing holes; 12-a lens to be tested; 121-a first end; 123-a second end; 125-view angle; 13-a first light emitting unit; 131-a first detection beam; 15-a second light-emitting unit; 151-second detection beam; 17-a light sensing unit; 20-lens detection means; 21-a second drive unit; 22-a seat body; 23-a first mount; 231-a first drive unit; 25-a second mount; 251-a guide unit; 27-a third drive unit; x-a first direction; y-a second direction; z-third direction.
Detailed Description
Fig. 1 is a schematic structural diagram of a lens inspection apparatus according to an embodiment of the utility model. As shown in the figure, the lens detecting device 10 mainly includes a carrier 11, at least one first light-emitting unit 13, a plurality of second light-emitting units 15 and a light sensing unit 17, wherein the carrier 11 is used for carrying at least one lens 12 to be detected. The first light emitting unit 13 and the second light emitting unit 15 are configured to project the detection light beam to the lens 12 to be detected, and receive the detection light beam passing through the lens 12 to be detected through the light sensing unit 17, so as to complete the detection of the lens 12 to be detected.
The lens 12 to be measured according to the present invention can be a lens of a camera, a mobile phone, a tablet or a pen, wherein the lens 12 to be measured has a first end 121, a second end 123 and an angle of view (angle of view) 125. The View angle 125 is an angle range within which a lens can receive images in a general environment, and may also be referred to as a Field of View (View).
The first light emitting unit 13 and the second light emitting unit 15 are located at the first end 121 of the lens 12, and the light sensing unit 17 is located at the second end 123 of the lens 12. Specifically, the first end 121 may be a light incident side of the lens 12 to be tested, and the second end 123 is a light emergent side of the lens 12 to be tested. In an embodiment of the utility model, the carrier 11 is plate-shaped and has an upper surface and a lower surface, wherein the first light-emitting unit 13 and the second light-emitting unit 15 are located at one side of the upper surface of the carrier 11, and the light sensing unit 17 is located at one side of the lower surface of the carrier 11.
The first light emitting unit 13 is located within the viewing angle 125 of the lens 12, wherein the first light emitting unit 13 is configured to generate a first detection light beam 131 and project the first detection light beam 131 to the first end 121 of the lens 12. The lens 12 to be tested is configured to receive the first detection light beam 131, wherein the first detection light beam 131 passes through the lens 12 to be tested and is projected on the photo sensing unit 17.
The second light emitting unit 15 is located outside the viewing angle 125 of the lens 12, wherein the second light emitting unit 15 is configured to generate a second detection light beam 151 and project the second detection light beam 151 to the first end 121 of the lens 12. The lens 12 to be tested is configured to receive the second detection light beam 151, wherein the second detection light beam 151 passes through the lens 12 to be tested and is projected on the photo sensing unit 17.
The first light-emitting unit 13 located within the viewing angle 125 of the lens 12 to be tested is matched with the second light-emitting unit 15 located outside the viewing angle 125 of the lens 12 to be tested, so that the lens 12 to be tested can be more accurately detected. For example, the use of the second light emitting unit 15 located outside the viewing angle 125 of the lens 12 to be measured is more beneficial to determining whether there is contamination such as particles in the lens 12 to be measured.
In an embodiment of the utility model, the first light emitting unit 13 and the second light emitting unit 15 include but are not limited to light emitting diodes, the first detection light beam 131 and the second detection light beam 151 may be divergent light, and the light sensing unit 17 includes but is not limited to a charge-coupled device (CCD) and a complementary metal oxide semiconductor Active pixel sensor (CMOS Active pixel sensor).
Please refer to fig. 2 and fig. 3, which are schematic structural diagrams of another embodiment of a lens inspection apparatus according to the present invention. As shown in the figure, referring to fig. 1, the lens detecting device 20 mainly includes a carrier 11, at least one first light-emitting unit 13, a plurality of second light-emitting units 15, and a light sensing unit 17, wherein the carrier 11 is used for carrying at least one lens 12 to be detected. The first light emitting unit 13 and the second light emitting unit 15 are configured to project the detection light beam to the lens 12 to be detected, and receive the detection light beam passing through the lens 12 to be detected through the light sensing unit 17, so as to complete the detection of the lens 12 to be detected.
The lens inspection apparatus 20 according to the embodiment of the utility model includes a first fixing frame 23, wherein the first fixing frame 23 is located at a first end 121 of the lens 12 to be inspected, for example, above the light incident side, and the first light emitting unit 13 is disposed on the first fixing frame 23. The first light emitting unit 13 is located within the viewing angle 125 of the lens 12 to be tested and is used for projecting the first detection light beam 131 to the lens 12 to be tested.
In an embodiment of the utility model, the first fixing frame 23 may be connected to a first driving unit 231, wherein the first driving unit 231 is configured to drive the first fixing frame 23 and the first light-emitting unit 13 to move relative to the lens 12 to be measured and the carrier 11, and change a distance between the lens 12 to be measured and the first light-emitting unit 13. In practical applications, the first fixing frame 23 can be disposed on a slide rail, and the first driving unit 231 drives the first fixing frame 23 to move along the slide rail.
The lens inspection device 20 may include a plurality of second holders 25, wherein the second holders 25 are located at a side of the lens 12, the stage 11 and/or the first holder 23 to be inspected, such as a side and/or an oblique top of the incident light of the lens 12 to be inspected. The second light emitting unit 15 is disposed on the second fixing frame 25 and is configured to project the generated second detection light beam 151 to the lens 12 to be detected.
Specifically, the first detection light beam 131 generated by the first light emitting unit 13 within the angle of view 125 of the lens 12 under test can be used to perform Modulation Transfer Function (MTF) test on the lens under test. The second detection light beam 151 generated by the second light emitting unit 15 located outside the viewing angle 125 of the lens 12 to be detected is beneficial to detecting whether particles exist in the lens 12 to be detected through the light sensing unit 17.
Part or all of the second fixing frame 25 may be arc-shaped or arc-shaped, wherein the plurality of second light-emitting units 15 disposed on the second fixing frame 25 may form a virtual sphere, and the lens 12 to be measured is approximately located at the center of the virtual sphere.
In an embodiment of the utility model, the second fixing frame 25 may be provided with at least one guiding unit 251, wherein the second light emitting unit 15 is capable of moving along the guiding unit 251 relative to the lens 12 to be measured and/or the carrier 11 to change an included angle between the second detection light beam 151 generated by the second light emitting unit 15 and the lens 12 to be measured, for example, the guiding unit 251 may be a groove, a through hole, or a sliding rail provided on the second fixing frame 25.
In an embodiment of the utility model, referring to fig. 4, the carrier 11 includes a plurality of placing holes 111, and the plurality of lenses 12 to be tested are respectively disposed in the placing holes 111 of the carrier 11. The carrier 11 may be connected to at least one second driving unit 21, wherein the second driving unit 21 is configured to drive the carrier 11 and the lens 12 to be measured to move relative to the first light emitting unit 13, the second light emitting unit 15 and the light sensing unit 17. The first detection light beam 131 and the second detection light beam 151 generated by the first light emitting unit 13 and the second light emitting unit 15 can be projected onto different lenses 12 to be detected on the carrier 11, and the different lenses 12 to be detected are aligned with the light sensing unit 17, so that each lens 12 to be detected on the carrier 11 is sequentially detected by the first light emitting unit 13, the second light emitting unit 15 and the light sensing unit 17.
Specifically, the second driving unit 21 is configured to drive the stage 11 and the lens 12 to be measured to displace in a first direction X and/or a second direction Y, where the first direction X is orthogonal to the second direction Y. The first driving unit 231 drives the first light emitting unit 13 to displace along a third direction Z, wherein the third direction Z is orthogonal to the first direction X and the second direction Y.
The optical sensing unit 17 may be connected to a third driving unit 27, wherein the third driving unit 27 is configured to drive the optical sensing unit 17 to move relative to the lens 12 to be tested and the carrier 11, for example, move along the third direction Z, and change a distance between the optical sensing unit 17 and the lens 12 to be tested, so that the first detection light beam 131 and/or the second detection light beam 151 passing through the lens 12 to be tested are focused on the optical sensing unit 17.
In an embodiment of the present invention, the number of the second fixing frames 25 may be two, and preferably more than three. The second fixing frame 25 can be connected to a base 22 through a slide rail, a through hole or a groove, and can move on the base 22 along the slide rail, the through hole or the groove to change the distance between the second fixing frame 25 and the second light-emitting unit 15 and the lens 12 to be measured. Specifically, the lens 12 to be tested may be located at the center of a virtual sphere formed by the plurality of second light-emitting units 15, and the second fixing frame 25 and the second light-emitting units 15 may be displaced along the radial direction of the virtual sphere.
The utility model has the advantages that:
a novel lens detection device is provided, wherein at least one first light-emitting unit is arranged in the visual angle of a lens to be detected, at least one second light-emitting unit is arranged outside the visual angle of the lens to be detected, and a detection light beam is projected to the lens to be detected through the first light-emitting unit and the second light-emitting unit so as to complete the detection of the lens to be detected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e., all equivalent variations and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (9)
1. A lens inspection apparatus, comprising:
a carrier for placing at least one lens to be tested, wherein the lens to be tested has a visual angle, a first end and a second end;
at least one first light-emitting unit, located in the view angle of the lens to be tested, for projecting a first detection light beam to the first end of the lens to be tested;
the plurality of second light-emitting units are positioned outside the visual angle of the lens to be detected and used for projecting a second detection light beam to the first end of the lens to be detected; and
and the light sensing unit is positioned at the second end of the lens to be detected, wherein the first detection light beam and the second detection light beam which penetrate through the lens to be detected are used for being projected on the light sensing unit.
2. The lens inspection device as claimed in claim 1, comprising a first fixing frame disposed at the first end of the lens to be inspected and used for carrying the first light emitting unit.
3. The lens inspection device as claimed in claim 2, comprising a plurality of second fixing frames disposed at a side of the lens to be inspected and used for carrying the second light emitting units.
4. The lens detecting device of claim 3, wherein the second holder includes at least one guiding unit, and the second light emitting unit is displaced along the guiding unit to adjust an angle between the second detecting beam and the lens to be detected.
5. The lens detecting device of claim 3, comprising a first driving unit connected to the first holder and configured to drive the first holder and the first light-emitting unit to move relative to the lens on the stage, so as to change a distance between the first light-emitting unit and the lens.
6. The lens inspection device as claimed in claim 5, wherein the lens to be inspected is plural in number, and the carrier includes plural placing holes for placing the plural lenses to be inspected respectively.
7. The apparatus as claimed in claim 6, comprising a second driving unit for driving the stage and the lens to be tested to move relative to the first light-emitting unit and the second light-emitting unit, so that the first detecting beam and the second detecting beam generated by the first light-emitting unit and the second light-emitting unit are projected onto different lenses of the stage.
8. The lens detecting device of claim 7, comprising a third driving unit connected to the light sensing unit for adjusting a distance between the light sensing unit and the lens to be tested.
9. The lens detecting device of claim 3, wherein the second fixing frame is connected to a base via a slide rail and moves along the slide rail relative to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120577163.1U CN215581490U (en) | 2021-03-22 | 2021-03-22 | Lens detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120577163.1U CN215581490U (en) | 2021-03-22 | 2021-03-22 | Lens detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215581490U true CN215581490U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120577163.1U Active CN215581490U (en) | 2021-03-22 | 2021-03-22 | Lens detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215581490U (en) |
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2021
- 2021-03-22 CN CN202120577163.1U patent/CN215581490U/en active Active
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