CN213403306U - Lens detection device and lens module - Google Patents
Lens detection device and lens module Download PDFInfo
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- CN213403306U CN213403306U CN202021402935.XU CN202021402935U CN213403306U CN 213403306 U CN213403306 U CN 213403306U CN 202021402935 U CN202021402935 U CN 202021402935U CN 213403306 U CN213403306 U CN 213403306U
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Abstract
The utility model provides a camera lens detection device and camera lens module. The lens detection device is provided with a frame body, a pattern generation device and a lens module, wherein the lens module receives a first pattern light beam from the pattern generation device through a first end of the lens module and generates a second pattern light spot at a second end to provide a lens to be detected as a detection image. The working distance between the second pattern light spot and the lens module is 1-50 mm. Furthermore, the optical path between the second pattern light spot and the second end of the lens module has a numerical aperture in a range of 0.4-1. The second pattern light spot generated by the lens detection device can be used as a detection image of the lens to be detected so as to prolong the distance between the carrying platform of the lens detection device and the pattern generation device, thereby preventing the problem of damage caused by mutual collision of devices in the lens detection device.
Description
Technical Field
The utility model relates to a camera lens detection device and camera lens module especially indicate a camera lens detection device and camera lens module that can produce second pattern facula in order to regard as the detection image of the camera lens that awaits measuring, wherein has the light path between the second end of second pattern facula and camera lens module to 1-50 millimeters working distance has, and the light path has 0.4-1 numerical aperture.
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 are also beginning to be inspected if they encounter a bottleneck. 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.
As the size of the lens is gradually reduced, the inherent lens inspection apparatus may not be suitable for the small-sized lens, referring to fig. 1, fig. 1 is a schematic diagram of a lens inspection apparatus and a small-sized lens to be inspected in the prior art, and as shown in fig. 1, when the small-sized lens to be inspected 102 is disposed in the conventional lens inspection apparatus 101 and the image plane of the lens to be inspected 102 is located in the through hole 1012 of the stage 1011, the pattern generating apparatus 103 for providing the pattern spot 1032 and the pattern beam 1031 must be inserted into the through hole 1012 for the inspection of the lens to be inspected 102. However, in this case, the pattern generating device 103 of the conventional lens detecting device 101 may easily collide with the stage 1011 to cause damage of the apparatus.
Disclosure of Invention
Therefore, in order to overcome the disadvantages of the prior art, the utility model provides a lens detection device and a lens module. The lens module can form a second pattern light spot as a detection image of the lens to be detected after receiving the first pattern light beam generated by the pattern generation device, so that the distance between a carrying platform in the lens detection device and the pattern generation device is lengthened, and the probability of equipment damage is reduced.
Based on at least one of the above objectives, an embodiment of the present invention provides a lens detecting device including a frame, a pattern generating device and a lens module. The pattern generating device is arranged on the frame body and used for generating a first pattern light spot and a first pattern light beam. The lens module is provided with a first end and a second end, is arranged on the frame body, is positioned on one side of the pattern generating device and is arranged between the pattern generating device and the lens to be detected, wherein the first end of the lens module is used for receiving the first pattern light beam generated by the pattern generating device and generating a second pattern light spot through the second end so as to provide the lens to be detected as a detection image. The optical path between the second end of the lens module of the lens detection device and the second pattern light spot has a working distance of 1-50 millimeters (mm).
Optionally, the lens module is a relay lens (relay lens) or a two-object lens, where the two-object lens refers to two-object lenses.
Optionally, when the lens module is two objective lenses, the two objective lenses have different sizes.
Optionally, the optical path has a numerical aperture, and the numerical aperture is 0.4-1.
Based on at least one of the above objects, the present invention further provides a lens detecting device including a frame, a pattern generating device and a lens module. The pattern generating device is arranged on the frame body and used for generating a first pattern light spot and a first pattern light beam. The lens module is provided with a first end and a second end, is arranged on the frame body, is positioned on one side of the pattern generating device and is arranged between the pattern generating device and the lens to be detected, wherein the first end of the lens module is used for receiving the first pattern light beam generated by the pattern generating device and generating a second pattern light spot through the second end so as to provide the lens to be detected as a detection image. The light path between the second end of the lens module and the second pattern light spot has a numerical aperture of 0.4-1.
Optionally, the lens module is a relay lens or two object lenses, and the two object lenses refer to two object lenses.
Optionally, when the lens module is two objective lenses, the two objective lenses have different sizes.
At least one of them person based on aforementioned purpose, the utility model discloses still provide a camera lens module for camera lens detection device, the camera lens module includes two and connects objective lens to form relay lens, just the camera lens module has first end and second end. The first end is used for receiving a first pattern light beam generated by a pattern generating device of the lens detection device, and a second pattern light spot is generated through the second end to provide a lens to be detected as a detection image. The optical path between the second end of the lens module and the second pattern light spot has a working distance of 1-50 mm.
Based on at least one of the aforesaid objects, the utility model also provides a lens module for camera lens detection device includes two objective lenses to form relay lens, just the lens module has first end and second end. The first end is used for receiving a first pattern light beam generated by a pattern generating device of the lens detection device, and a second pattern light spot is generated through the second end to provide a lens to be detected as a detection image. The light path between the second end of the lens module and the second pattern light spot has a numerical aperture of 0.4-1.
In short, the utility model provides a camera lens detection device and camera lens module can produce second pattern facula (promptly, be used for carrying out the detection image that the detection of the camera lens that awaits measuring used), and have the distance between second pattern facula and the camera lens module, can be when detecting the camera lens that awaits measuring, in the through-hole of visiting its microscope carrier of camera lens detection device with the camera lens module of being exempted from, borrow this and then can avoid or reduce the damage problem that equipment collision caused, consequently, various markets that have the demand to the camera lens detection (for example, camera optical lens market, the optical lens market or other optical lens markets of fingerprint discernment under the screen) have the advantage.
Drawings
FIG. 1 is a diagram illustrating a lens inspection device and a small-sized lens to be inspected according to the prior art;
fig. 2 is a schematic diagram of a lens inspection device according to an embodiment of the present invention.
Wherein, the reference numbers:
101: conventional lens detection devices; 1011. 2011: a stage;
1012: through holes are formed; 102. 202: a lens to be tested;
103. 203: a pattern generating device; 1031: a patterned beam;
1032: pattern light spots; 2: a lens detection device;
201: a lens module; 2012: an object lens;
2031: a first patterned beam; 204: a frame body;
e201: a first end; e202: a second end;
p201: a first pattern spot; p202: a second pattern of spots;
WK: a working distance; θ: and (4) a light-receiving angle.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. The same symbols represent members or devices having the same or similar functions.
The present embodiment provides a lens detecting device, which includes a frame, a pattern generating device and a lens module. The lens module can be a relay lens formed by two object lenses and is used for receiving the first pattern light spot and the first pattern light beam generated by the pattern generating device and forming and projecting a second pattern light spot to the lens to be detected as a detection image, so that the traditional first pattern light spot directly used as the detection image is replaced. An optical path is arranged between the second pattern light spot and the second end of the lens module, the working distance of the optical path (namely, the distance between the second pattern light spot and the second end of the lens module) is between 1 and 50 millimeters, and the numerical aperture of the optical path is between 0.4 and 1. Compared with the conventional lens detection device, the lens detection device of the present embodiment provides a distance between the detection image (the second pattern light spot) and the lens module, so as to extend the distance between the devices of the lens detection device (e.g., the distance between the pattern generation device and the stage on which the lens to be detected is mounted, and the distance between the lens module and the stage on which the lens to be detected is mounted), so as to reduce the damage rate of collision between the devices, and further reduce the cost of lens detection.
First, referring to fig. 2, fig. 2 is a schematic view of a lens detecting device according to the present embodiment. As shown in fig. 2, the lens detecting device 2 includes a lens module 201, a pattern generating device 203, and a frame 204. The frame 204 is used for fixing the lens module 201 and disposing the pattern generating device 203, so that the lens module 201 is located at one side of the pattern generating device 203, in the embodiment, the lens module 201 is located at the upper side of the pattern generating device 203, but the embodiment is not limited thereto, and is not limited by the type of the appearance of the frame 204. When the lens inspection apparatus 2 is used to inspect the lens 202 to be inspected, the lens module 201 is located between the pattern generation apparatus 203 and the lens 202 to be inspected.
The pattern generating device 203 is configured to generate a first pattern light spot P201 and a first pattern light beam 2031, and further generate a second pattern light spot P202 as a detection pattern of the lens 202 to be detected through the lens module 201. The lens module 201 has a first end E201 and a second end E202, which may be a relay lens composed of two object lenses 2012. The first end E201 of the lens module 201 can receive the first pattern light spot P201 and the first pattern light beam 2031 generated by the pattern generating device 203, and generate the second pattern light spot P202 at the second end E202 as the detection pattern of the lens 202 to be detected, wherein a distance is provided between the second pattern light spot P202 and the lens module 201, so that the distance between the lens module 202 providing the detection pattern and the lens 202 to be detected can be effectively extended, and the devices can be prevented from colliding with each other, which is different from the extremely short distance between the pattern generating device 103 and the pattern light spot 1032 of the conventional lens detecting device (fig. 1). When the lens module 201 is formed by combining two objective lenses 2012 or is a relay lens, the light projected by the lens module 201 can be made to approach parallel light, so any object having any function of projecting approximately parallel light should be within the scope covered by the present embodiment. When the lens module 201 is formed by combining two objective lenses 2012, the sizes of the two objective lenses 2012 can be the same or different, and the combination of the two objective lenses 2012 can provide different magnification effects.
An optical path is arranged between the second pattern light spot P202 generated by the lens module 201 and the second end E202 of the lens module 201, and the optical path has a working distance WK of 1-50 mm. Furthermore, the optical path has a light receiving angle θ, which can be calculated to obtain a Numerical Aperture (NA). The numerical aperture is a dimensionless number used to measure the angular range of light that can be collected by the optical system, and the numerical aperture is defined and calculated by NA = n sin θ, where n is the refractive index of the medium and θ is the angle of collection θ in this embodiment. In the lens detection apparatus 2 of this embodiment, the numerical aperture of the optical path between the second end 202 of the lens module 201 and the second pattern spot E202 is 0.4-1.
Synthesize above, compare in prior art, the embodiment of the utility model provides a technical effect of camera lens detection device and camera lens module explains as follows.
In the prior art, the detection pattern generated by the pattern generating device has only a very short distance with the detection pattern, so that the pattern generating device is often required to be inserted into a through hole of a carrier carrying a lens to be detected in the process of detecting the lens, and equipment is easy to be damaged due to collision. Moreover, when the stage on which the lens to be detected is mounted is provided with a plurality of lenses to be detected, the stage needs to be moved vertically (if the stage moves directly in parallel, equipment collision will be caused) to increase the detection action and make the detection efficiency low when different lenses to be detected are measured continuously. In contrast to the lens detection device and the lens module of the present embodiment, the lens module can generate the second pattern light spot as the detection image, wherein a distance is formed between the detection image and the lens module, so that the distance between the stage for loading the lens to be detected and the lens module is effectively extended during the detection process, i.e., the lens module generating the detection image does not need to be inserted into the through hole of the stage, thereby avoiding collision and damage of the apparatus. Moreover, when the carrying platform is provided with a plurality of lenses to be detected, the carrying platform can directly move horizontally to effectively improve the detection efficiency when different lenses are continuously measured
Of course, the present invention can have other embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the claims of the present invention.
Claims (9)
1. A lens inspection apparatus, comprising:
a frame body;
the pattern generating device is arranged on the frame body and used for generating a first pattern light spot and a first pattern light beam;
the lens module is provided with a first end and a second end, is arranged on the frame body, is positioned on one side of the pattern generating device and is arranged between the pattern generating device and the lens to be detected, and the first end of the lens module is used for receiving the first pattern light beam generated by the pattern generating device and generating a second pattern light spot through the second end to provide the lens to be detected as a detection image;
wherein an optical path between the second end of the lens module and the second pattern of light spots has a working distance of 1-50 mm.
2. The lens inspection device as claimed in claim 1, wherein the lens module is a relay lens or a two-object lens.
3. The lens inspection device as claimed in claim 2, wherein when the lens module is two objective lenses, the two objective lenses have different sizes.
4. The lens detection apparatus of claim 1, wherein the optical path has a numerical aperture, and the numerical aperture is 0.4-1.
5. A lens inspection apparatus, comprising:
the pattern generating device is arranged on the frame body and used for generating a first pattern light spot and a first pattern light beam;
the lens module is provided with a first end and a second end, is arranged on the frame body, is positioned on one side of the pattern generating device and is arranged between the pattern generating device and the lens to be detected, and the first end of the lens module is used for receiving the first pattern light beam generated by the pattern generating device and generating a second pattern light spot through the second end to provide the lens to be detected as a detection image;
and the light path between the second end of the lens module and the second pattern light spot has a numerical aperture which is 0.4-1.
6. The lens detection apparatus as claimed in claim 5, wherein the lens module is a relay lens or a two-object lens.
7. The lens inspection device as claimed in claim 6, wherein when the lens module is two objective lenses, the two objective lenses have different sizes.
8. A lens module adapted for use in a lens inspection apparatus, the lens module comprising:
the lens module is provided with a first end and a second end, the first end is used for receiving a first pattern light beam generated by a pattern generation device of the lens detection device, and a second pattern light spot is generated through the second end to provide a lens to be detected as a detection image;
wherein an optical path between the second end of the lens module and the second pattern of light spots has a working distance of 1-50 mm.
9. A lens module adapted for use in a lens inspection apparatus, the lens module comprising:
the lens module is provided with a first end and a second end, the first end is used for receiving a first pattern light beam generated by a pattern generation device of the lens detection device, and a second pattern light spot is generated through the second end to provide a lens to be detected as a detection image;
and the light path between the second end of the lens module and the second pattern light spot has a numerical aperture which is 0.4-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402935.XU CN213403306U (en) | 2020-07-16 | 2020-07-16 | Lens detection device and lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402935.XU CN213403306U (en) | 2020-07-16 | 2020-07-16 | Lens detection device and lens module |
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| Publication Number | Publication Date |
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| CN213403306U true CN213403306U (en) | 2021-06-08 |
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| CN202021402935.XU Active CN213403306U (en) | 2020-07-16 | 2020-07-16 | Lens detection device and lens module |
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