Article optical property detection device

Abstract

An optical property detection device for detecting optical properties of an object to be detected, wherein the optical properties include image resolution and imaging uniformity, the optical property detection device comprising a device main body, an object-to-be-detected stage assembly, a plane focusing assembly, a plurality of wide-angle focusing assemblies, and a relay lens assembly.

Description

Technical Field

[0001] This utility model relates to an object optical property detection device, and more particularly to an object optical property detection device that can accelerate the detection speed and reduce the size. Background Technology

[0002] With the rapid development of modern technology, camera modules are widely used in devices such as laptops, monitors, tablets, and smartphones. However, different types of devices have different requirements for the specifications, wide-angle focus, and focal length of their built-in camera modules. This results in the large size of the devices used to test whether the camera modules meet the corresponding product requirements. Furthermore, in order to meet the specified testing specifications for camera modules used in different types of products, the adjustment of the optical components used to test the camera modules inside these testing devices is very complex and time-consuming. Therefore, there is a need for improvement. Utility Model Content

[0003] The main objective of this invention is to provide an object optical property detection device that can accelerate the detection speed and reduce the size.

[0004] The main objective of this invention is to provide an object optical characteristic detection device that can detect the image resolution, imaging uniformity, and / or optical specifications of an object.

[0005] To achieve the above objectives, this utility model provides an object optical characteristic detection device for detecting the optical characteristics of an object under test, including image resolution and imaging uniformity. The object optical characteristic detection device includes a main body, an object stage assembly, a planar focusing assembly, multiple wide-angle focusing assemblies, and a relay lens assembly. The main body includes a platform with a top surface, a bottom surface, and an opening. The object stage assembly is positioned below the platform, carrying the object and driving it to move vertically between a resolution detection position and an imaging uniformity detection position via the opening. The resolution detection position is located above the top surface, and the imaging uniformity detection position is located below the bottom surface. When detecting image resolution, the object stage assembly is located at the resolution detection position. When detecting imaging uniformity, the object stage assembly is located at the imaging uniformity detection position. A planar focusing assembly is disposed on the main body of the device and located above the top surface. When the object optical characteristic detection device of this invention detects image resolution, the planar focusing assembly moves vertically relative to the top surface to a simulated detection position matching a specified detection focal length. Multiple wide-angle focusing assemblies are disposed on the top surface, with each wide-angle focusing assembly facing the stage assembly of the object under test. A relay lens assembly is disposed on one side of the stage assembly of the object under test. The relay lens assembly includes a relay lens and a driving module. The relay lens is connected to the driving module, causing the relay lens to move relative to the stage of the object under test. When the object optical characteristic detection device of this invention detects image resolution, the driving module moves the relay lens between the object under test and the planar focusing assembly.

[0006] According to one embodiment of the present invention, the planar focusing assembly includes a planar focusing unit and a planar focusing unit lifting assembly, and the object optical characteristic detection device detects the image resolution of the object under test according to specified detection conditions, wherein the specified detection conditions include a specified detection focal length, and the planar focusing unit lifting assembly drives the planar focusing unit to move relative to the top surface in the vertical direction to a simulated detection position that matches the specified detection focal length.

[0007] According to one embodiment of the present invention, each wide-angle focusing component includes an arc-shaped track, a beam collimation unit, and a locking unit. One end of the arc-shaped track is disposed on the top surface, and the other end of each arc-shaped track faces the stage of the object to be measured. The beam collimation unit includes a connecting end and a light-emitting end. The beam collimation unit is movably connected to the arc-shaped track through the connecting end. The locking unit is connected to the connecting end so as to fix the beam collimation unit to the arc-shaped track.

[0008] According to one embodiment of the present invention, when the specified detection conditions include a specified wide-angle detection angle, after the connecting end is moved along the arc track to the wide-angle detection position that matches the specified wide-angle detection angle, the beam collimation unit is fixed at the wide-angle detection position by the locking unit.

[0009] According to one embodiment of the present invention, the object optical characteristic detection device further includes a backlight cover and a backlight cover driving module, wherein the backlight cover driving module is disposed on the bottom surface, and the backlight cover is connected to the backlight cover driving module. When the object optical characteristic detection device of the present invention detects the imaging uniformity, the stage of the object to be tested is in the imaging uniformity detection position, the backlight cover is moved above the stage of the object to be tested through the backlight cover driving module, and the backlight cover covers the object to be tested.

[0010] According to one embodiment of the present invention, the optical characteristics also include the optical specifications of the components. The object under test has at least one designed focal length. When the object optical characteristics detection device detects the optical specifications of the components, the stage of the object under test is in the resolution detection position. The second drive component moves the planar focusing unit to a simulated detection position that matches at least one designed focal length according to the at least one designed focal length.

[0011] By utilizing the arc-shaped track feature of the wide-angle focusing component, the object optical characteristic detection device of this invention can detect the same wide-angle focusing angle with relatively small length and width dimensions. Furthermore, by taking advantage of the fixed distance between the relay lens and the object under test, when testing objects of the same specifications at the same designated detection focal length, only one simulation detection position of the planar focusing unit is needed to complete the detection of all objects of the same specifications at the same designated detection focal length, thus accelerating the detection process. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment of the object optical property detection device of this utility model.

[0013] Figure 2 This is an exploded view of an embodiment of the object optical property detection device of this utility model after removing the frame.

[0014] Figure 3 This is a schematic diagram of the image resolution of the object being measured by the stage assembly located at the resolution detection position.

[0015] Figure 4 This is a schematic diagram showing the stage assembly for the object under test being moved down from the resolution detection position.

[0016] Figure 5 and Figure 6 This is a schematic diagram illustrating the steps of detecting the imaging uniformity of an object at the imaging uniformity detection position using the test stage assembly of this utility model.

[0017] Figure 7 This is a schematic diagram of the operation of the second embodiment of the drive module of the relay lens assembly of this utility model.

[0018] The annotations in the attached figures are explained as follows:

[0019] 1. Object optical property detection device 10. Device main body

[0020] 11. Top surface of device platform 111

[0021] 112 Bottom surface 113 Opening

[0022] 221, 421, 521, 621 linear guides; 222, 422, 522 drive cylinders

[0023] 22 Planar focusing unit lifting assembly; 31 Arc-shaped track

[0024] 30, 30a, 30b, 30c Wide-angle focusing assembly 321 connector

[0025] 32 beam collimation unit 33 locking unit

[0026] 322 light output end 40 test object stage assembly

[0027] 42 Object under test platform lifting assembly 331 latch

[0028] 41 Test object stage 51 Relay lens

[0029] 50 Relay lens assembly 61 Backlight cover

[0030] 52 driver module P1 resolution detection position

[0031] 100 objects to be tested, 622 brackets

[0032] 60 Uniformity Detection Component 332 Fixture

[0033] 53, 53a lens bracket, 522 slide rail

[0034] 12 frames Detailed Implementation

[0035] To better understand the technical content of this utility model, preferred embodiments are described below. Please refer to the following for details. Figures 1 to 4 A perspective view of an embodiment of the object optical property detection device of the present invention, an exploded view after removing the frame, a schematic diagram of the object stage assembly being located at the resolution detection position and detecting the image resolution of the object, and a schematic diagram of the object stage assembly being moved down from the resolution detection position.

[0036] like Figures 1 to 4As shown, in this embodiment, the object optical characteristic detection device 1 of this utility model is used to detect the optical characteristics of the object under test 100, wherein the object under test 100 is a camera module, and the optical characteristics include image resolution and imaging uniformity. Specifically, the object under test 100 is a camera module used in devices such as monitors, laptops, tablets, and / or smartphones. Detecting the image resolution of the object under test 100 refers to detecting the spatial frequency response (SFR) of the object under test 100 in a specific light field, thereby verifying whether the imaging resolution of the object under test 100 at a specified detection focal length (e.g., 800m) and / or a specified wide-angle detection angle (e.g., 120 degrees or 140 degrees) meets the specifications of the product (e.g., monitor, laptop) using this object under test 100. The detection of the imaging uniformity of the object under test 100 refers to the detection of whether the imaging brightness of the object under test 100 is uniform in a specific light field, and whether there are dark corners in the image it presents. This imaging uniformity detection can also be called white wall detection.

[0037] like Figures 1 to 3 As shown, the object optical characteristic detection device 1 of this utility model includes a device body 10, a planar focusing assembly 20, multiple wide-angle focusing assemblies 30, a test object stage assembly 40, a relay lens assembly 50, and a uniformity detection assembly 60. In this embodiment, the device body 10 includes a device platform 11, which includes a top surface 111, a bottom surface 112, and an opening 113. The planar focusing assembly 20 is disposed on the device body 10 and located above the top surface 111. Multiple wide-angle focusing assemblies 30 are disposed on the top surface 111, and each wide-angle focusing assembly 30 faces the test object stage assembly 40. The test object stage assembly 40 is disposed on the bottom surface 112, and the relay lens assembly 50 is disposed on one side of the test object stage assembly 40. According to a specific embodiment of the present invention, the main body 10 of the device includes a frame 12 that houses the device platform 11, a planar focusing assembly 20, a plurality of wide-angle focusing assemblies 30, a test object stage assembly 40, a relay lens assembly 50, and a uniformity detection assembly 60. According to a specific embodiment, the main body 10 of the device may also include a shielding panel and a door panel (not shown), thereby ensuring that the optical field of the object optical characteristic detection device 1 is not disturbed by external light when detecting the test object 100.

[0038] like Figures 1 to 3As shown, the planar focusing assembly 20 includes a planar focusing unit 21 and a planar focusing unit lifting assembly 22. The planar focusing unit lifting assembly 22 is disposed on the main body 10 and located above the device platform 11. One side of the planar focusing unit 21 is connected to the planar focusing unit lifting assembly 22, so that the planar focusing unit 21 is suspended above the opening 113 and multiple wide-angle focusing assemblies 30. In this embodiment, the planar focusing unit 21 is a planar focusing verification chart module, which has a backlight inside and the side of the planar focusing unit 21 facing the opening 113 is rectangular and has a verification chart (or planar chart). The planar focusing unit lifting assembly 22 includes a linear guide rail 221 and a drive cylinder 222. The drive cylinder 222 and the linear guide rail 221 drive the planar focusing unit 21 to move relative to the top surface 111 in the vertical direction. When the object optical characteristic detection device 1 detects the image resolution of the object 100 under test, the planar focusing unit lifting assembly 22 moves the planar focusing unit 21 to the simulated detection position. Then, the image resolution of the object 100 under test is detected by the image detection of the verification chart to see if it meets the specifications.

[0039] In this embodiment, as Figure 2 As shown, in this embodiment, there are four wide-angle focusing components 30, and the wide-angle focusing components 30, 30a, 30b, and 30c are each dispersedly arranged on the top surface 111, and each wide-angle focusing component 30 faces the stage assembly 40. In this embodiment, the wide-angle focusing components 30, 30a, 30b, and 30c are respectively located at the four corners of the device platform 11, but this utility model is not limited thereto. Specifically, the wide-angle focusing component 30 includes an arc-shaped track 31, a beam collimation unit 32, and a locking unit 33. One end of the arc-shaped track 31 is located on the top surface 111, and the other end of each arc-shaped track 31 faces the opening 113. The beam collimation unit 32 is a collimator and includes a connecting end 321 and a light-emitting end 322. The beam collimation unit 32 is movably connected to the arc-shaped track 31 through the connecting end 321. The locking unit 33 is connected to the connecting end 321 to fix the beam collimation unit 32 to the arc-shaped track 31. The locking unit 33 in this embodiment includes a latch 331 and a fixing member 332, but this utility model is not limited thereto, and screws and nuts are also applicable to this utility model.

[0040] like Figures 1 to 3 As shown, the test object stage assembly 40 is disposed below the device platform 11, preferably on the bottom surface 112. The test object stage assembly 40 carries the test object 100 and drives the test object 100 to move along the vertical direction through the opening 113 between the resolution detection position P1 and the imaging uniformity detection position. The resolution detection position P1 is located above the top surface 111. Figure 4As shown, the imaging uniformity detection position is located below the bottom surface 112. When the object optical characteristic detection device 1 detects the image resolution of the object 100 under test, the object stage assembly 40 is located at the resolution detection position P1. When the object optical characteristic detection device 1 detects the imaging uniformity, the object stage assembly 40 is located at the imaging uniformity detection position.

[0041] Specifically, such as Figures 1 to 4 As shown, the test object stage assembly 40 includes a test object stage 41 and a test object stage lifting assembly 42. The test object stage 41 carries the test object 100. The test object stage lifting assembly 42 includes a linear guide rail 421 and a drive cylinder 422. The drive cylinder 422 and the linear guide rail 421 move the test object stage 41 along the vertical direction through the opening 113 between the resolution detection position P1 and the imaging uniformity detection position.

[0042] like Figure 2 and Figure 3 As shown, the relay lens assembly 50 is disposed on one side of the test object stage 41. The relay lens assembly 50 includes a relay lens 51, a drive module 52, and a lens bracket 53. The relay lens 51 is disposed at one end of the lens bracket 53, and the other end of the lens bracket 53 is connected to the drive module 52 via a slider. In this embodiment, the drive module 52 includes a linear guide rail 521 and a slide rail 522. Preferably, the extension direction of the slide rail 522 is approximately parallel to the device platform 11. The lens bracket 53 is movably disposed on the linear guide rail 521 via the slider. When the object optical characteristic detection device 1 detects the image resolution of the test object 100, the slider 5223 drives the relay lens 51 of the lens bracket 53 to move along the linear guide rail 521 above the test object 100. Then, the test object stage lifting assembly 42 moves the relay lens 51, the test object 100, and the test object stage 41 together vertically to the resolution detection position P1.

[0043] It should be noted here that, as Figure 3As shown, the distance between the relay lens 51 and the top surface of the object under test 100 is a fixed value. Therefore, when the stage assembly 40 is located at the resolution detection position P1, the distance between the relay lens 51 and the plane focusing unit 21 is calculated based on the distance between the relay lens 51 and the top surface of the object under test 100 and the specified detection focal length of the object under test 100. In other words, the simulated imaging position matching the specified detection focal length of the object under test 100 is found. This position is the simulated detection position of the plane focusing unit 21. In other words, assuming the test object 100 is known to have a specified detection focal length of 800m, and the distance between the relay lens 51 and the top surface of the test object 100 remains fixed at 10cm, the distance between the simulated imaging position of the test object 100 at the 800m focal length and the relay lens 51 can be calculated (assuming 50cm). This allows us to determine the simulated detection position of the planar focusing unit 21 (the simulated detection position will be set 50cm from the relay lens). Based on these features, for test objects 100 of the same specifications and testing at the same specified focal length, only one set of the simulated detection position of the planar focusing unit 21 is needed to complete the detection of all test objects 100 of the same specifications at the same specified focal length, thus accelerating the testing process of the test object 100.

[0044] Furthermore, according to a specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, in this embodiment, when the specified detection conditions also include a specified wide-angle detection angle (e.g., 120 degrees), the technician can manually unlatch the locking unit 33 and move the connecting end 321, allowing the beam collimation unit 32 to move along the arc track 31 to a wide-angle detection position matching the specified wide-angle detection angle. Then, the locking unit 33 is locked to the connecting end 321, fixing the beam collimation unit 32 at the wide-angle detection position, with the light-emitting end 322 facing the object 100 located at the resolution detection position for detection. Figure 4 As shown, after the image resolution detection is completed, the test object stage assembly 40 moves the relay lens 51 down to return to the preparatory position.

[0045] It should be noted that, according to a specific embodiment of this utility model, the optical characteristic detection device 1 of this utility model also includes detecting the optical specifications of the components in the optical characteristics of the object 100 under test. Detecting the optical specifications of the components refers to determining whether the object 100 under test conforms to the original design focal length specifications (e.g., 24mm or 200mm). When the optical characteristic detection device 1 of this utility model detects the optical specifications of the components, the stage assembly 40 will be in the resolution detection position P1, and the plane focusing unit lifting assembly 22 will move the plane focusing unit 21 to the simulated detection position according to at least one design focal length, and confirm whether the object 100 under test conforms to the original design specifications through the verification chart imaging of the plane focusing unit 21.

[0046] Please continue to refer to the following. Figure 2 and refer to them together. Figure 5 and Figure 6 A schematic diagram illustrating the steps of detecting the imaging uniformity of an object by positioning the test stage assembly at the imaging uniformity detection position.

[0047] like Figure 5 and Figure 6 As shown, the uniformity detection component 60 of the object optical characteristic detection device 1 of this utility model further includes a backlight cover 61 and a backlight cover driving module 62 to detect the imaging uniformity of the object 100 under test. The backlight cover driving module 62 is located below the device platform 11, preferably on the bottom surface 112. The backlight cover driving module 62 includes a linear guide rail 621 and a bracket 622. The backlight cover 61 is connected to the bracket 622, and the bracket 622 can slide on the linear guide rail 621, thereby driving the backlight cover 61 to move. In this embodiment, when the object optical characteristic detection device 1 of this utility model detects the imaging uniformity of the object 100 under test, the test object stage 41 can first be in a preparatory position for technicians to place the object 100 under test. Then, the backlight cover 61 is moved along the linear guide rail 621 from the outside of the device platform 11 to the test object stage 41. The object stage lifting assembly 42 then moves the test object stage 41 from the preparatory position to the imaging uniformity detection position. At this time, the backlight cover 61 will cover the test object 100 under test so that the imaging uniformity of the test object 100 can be detected inside the backlight cover 61. It should be noted that when detecting the imaging uniformity of the test object 100, the relay lens 51 is not needed. That is, when detecting the imaging uniformity of the test object 100, the relay lens 51 is not above the test object stage 41.

[0048] Please refer to the following: Figure 7 , Figure 7 This is a schematic diagram of the operation of the second embodiment of the drive module of the relay lens assembly of this utility model.

[0049] like Figure 7 As shown, in the second embodiment of the lens bracket 53a of the relay lens assembly 50, a rotational pivot can be built between the lens bracket 53a and the slider 522. Thus, after the relay lens 51 and the lens bracket 53a are moved to the side of the object to be tested 100 by the slider 522 along the linear guide rail 521, the lens bracket 53a is rotated relative to the slider 522, and the relay lens 51 is rotated to be above the object to be tested 100. Then, the relay lens 51, the object to be tested 100 and the object to be tested platform 41 are moved together in the vertical direction to the resolution detection position by the object to be tested platform lifting assembly 42.

[0050] The object optical characteristic detection device of this utility model can detect the image resolution, imaging uniformity, and / or optical specifications of the object 100 under test. Simultaneously, by utilizing the arc-shaped track 31 of the wide-angle focusing assembly 30, the object optical characteristic detection device of this utility model can detect the same wide-angle focusing angle of the object 100 under test within a smaller device volume, thus reducing the size of the device. Specifically, according to a specific embodiment of this utility model, the arc-shaped track 31 reduces the length and width of the device platform 11 from 180cm*90cm to 120cm*90cm. Furthermore, by utilizing the fixed distance between the relay lens 51 and the object 100 under test, when objects 100 of the same specifications are being detected at the same designated detection focal length, only one simulation detection position of the planar focusing unit 21 is needed to complete the detection of all objects 100 of the same specifications at the same designated detection focal length, accelerating the detection process of the object 100 under test and solving the problems of the prior art.

[0051] It should be noted that the above are merely embodiments and not limitations thereof. For example, anything that does not depart from the basic framework of this utility model should be considered within the scope of the claims of this patent, and the claims shall prevail.

Claims

1. An object optical characteristic detection device, used to detect the optical characteristics of an object under test, characterized in that, The optical characteristics mentioned above include image resolution and imaging uniformity, and the object optical characteristic detection device includes: The main body of the device includes a device platform, which includes a top surface, a bottom surface, and an opening; A test object stage assembly is disposed below the device platform. The test object stage assembly carries the test object and drives the test object to move vertically through the opening to a resolution detection position or an imaging uniformity detection position. The resolution detection position is located above the top surface, and the imaging uniformity detection position is located below the bottom surface. When detecting the image resolution, the test object stage assembly is located at the resolution detection position, and when detecting the imaging uniformity, the test object stage assembly is located at the imaging uniformity detection position. A planar focusing component is disposed on the main body of the device and located above the top surface. When the image resolution is detected, the planar focusing component moves in the vertical direction relative to the top surface to a simulated detection position. Multiple wide-angle focusing components are disposed on the top surface, with each wide-angle focusing component facing the stage assembly for the object under test; and A relay lens assembly is disposed on one side of the test object stage assembly. The relay lens assembly includes a relay lens and a driving module. The relay lens is connected to the driving module to move the relay lens relative to the test object stage. When detecting the image resolution, the driving module moves the relay lens between the test object and the planar focusing assembly.

2. The object optical characteristic detection device as described in claim 1, characterized in that, The planar focusing assembly includes a planar focusing unit and a planar focusing unit lifting assembly. The object optical characteristic detection device detects the image resolution of the object under test according to specified detection conditions, wherein the specified detection conditions include a specified detection focal length. The planar focusing unit lifting assembly drives the planar focusing unit to move in the vertical direction relative to the top surface to the simulated detection position that matches the specified detection focal length.

3. The object optical characteristic detection device as described in claim 2, characterized in that, Each of the wide-angle focusing components includes an arc-shaped track, a beam collimation unit, and a locking unit. One end of the arc-shaped track is disposed on the top surface, and the other end of each arc-shaped track faces the opening. The beam collimation unit includes a connecting end and a light-emitting end. The beam collimation unit is movably connected to the arc-shaped track through the connecting end. The locking unit is connected to the connecting end to fix the beam collimation unit to the arc-shaped track.

4. The object optical characteristic detection device as described in claim 3, characterized in that, When the specified detection conditions include a specified wide-angle detection angle, the connecting end is moved along the arc track to a wide-angle detection position that matches the specified wide-angle detection angle, and then the beam collimation unit is fixed at the wide-angle detection position by the locking unit.

5. The object optical characteristic detection device as described in claim 3, characterized in that, The distance between the relay lens and the top surface of the object under test is a fixed value.

6. The object optical characteristic detection device as described in claim 1, characterized in that, The distance between the relay lens and the top surface of the object under test is a fixed value.

7. The object optical characteristic detection device as described in claim 1, characterized in that, It also includes a backlight cover and a backlight cover driving module, wherein the backlight cover driving module is disposed on the bottom surface, the backlight cover is connected to the backlight cover driving module, when detecting the imaging uniformity, the object measuring stage assembly is in the imaging uniformity detection position, the backlight cover is moved above the object measuring stage assembly through the backlight cover driving module, and the backlight cover covers the object to be measured.

8. The object optical characteristic detection device as described in claim 1, characterized in that, The planar focusing assembly includes a planar focusing unit and a planar focusing unit lifting assembly. The optical characteristics also include the optical specifications of the element. The object under test has at least one designed focal length. When the object optical characteristic detection device detects the optical specifications of the element, the measuring stage assembly is in the resolution detection position. The planar focusing unit lifting assembly moves the planar focusing unit to the simulated detection position that matches the at least one designed focal length according to the at least one designed focal length.

9. The object optical characteristic detection device as described in claim 1, characterized in that, Each of the wide-angle focusing components includes an arc-shaped track, a beam collimation unit, and a locking unit. One end of the arc-shaped track is disposed on the top surface, and the other end of each arc-shaped track faces the opening. The beam collimation unit includes a connecting end and a light-emitting end. The beam collimation unit is movably connected to the arc-shaped track through the connecting end. The locking unit is connected to each connecting end to fix the beam collimation unit to the arc-shaped track.

10. The object optical property detection device as described in claim 9, characterized in that, The relay lens is at a fixed distance from the top surface of the object under test.

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