Lens detection device

Abstract

The utility model discloses a lens detection device for detecting lens, and containing pedestal, image projector, image receiver and lens platform. Image projector sets up in the pedestal. Image receiver sets up in the pedestal. Form image projection path between image projector and image receiver. Lens platform sets up in the pedestal and is located image projection path. Lens platform contains base plate, bears leaning piece and rotating part. Bear leaning piece with rotating part sets up in the base plate. Form the accommodation space between bear leaning piece and rotating part. Accommodation space contains lens, to bear leaning piece with the rotating part for the lens of leaning. Rotating part drives lens to rotate. Wherein, image receiver receives the mark of being measured that image projector projects along image projection path to lens. The mark of being measured is driven and rotates by rotating part.

Description

Technical Field

[0001] This utility model relates to a lens inspection device, and more particularly to a lens inspection device with a rotating component on the lens stage. Background Technology

[0002] With the evolution of digital technology, virtual technologies such as virtual reality (VR), augmented reality (AR), mixed reality (MR), and extended reality (XR) have sprung up rapidly. As a result, virtual and real image display glasses that allow users to simulate an immersive experience have appeared on the market to enhance their experience in life or games.

[0003] Generally, when manufacturing image display glasses, manufacturers use optical detectors to check if the lenses are misaligned, which could lead to poor image quality. However, the current efficiency of optical detectors does not meet the needs of manufacturers and cannot quickly inspect large numbers of lenses. Therefore, improving the inspection efficiency of lenses is one of the problems that researchers need to solve. Utility Model Content

[0004] The present invention provides a lens inspection device to improve the inspection efficiency of lenses.

[0005] One embodiment of this utility model discloses a lens detection device for detecting a lens, comprising a base, an image projector, an image receiver, and a lens stage. The image projector is disposed on the base. The image receiver is disposed on the base. An image projection path is formed between the image projector and the image receiver. The lens stage is disposed on the base and located within the image projection path. The lens stage includes a base plate, a support member, and a rotating member. The support member and the rotating member are disposed on the base plate. A receiving space is formed between the support member and the rotating member. The receiving space is used to receive the lens, allowing the lens to rest against the support member and the rotating member. The rotating member rotates relative to the base plate to drive the lens to rotate. The image receiver is used to sense and receive a test mark projected by the image projector along the image projection path toward the lens. The test mark is rotated by the rotating member.

[0006] According to the lens inspection apparatus of the above embodiment, since the bearing member and the rotating member are used for the lens to rest against, the rotating member can rotate relative to the substrate to drive the lens to rotate. Therefore, the test mark that is rotated by the rotating member can be compared with the comparison mark to detect whether the lens is off-center. Through the aforementioned structure of the lens inspection apparatus, a large number of lenses can be inspected quickly, thereby improving the lens inspection efficiency.

[0007] The above description of the present utility model and the following description of the embodiments are used to demonstrate and explain the principle of the present utility model, and to provide a further explanation of the scope of the patent application of the present utility model. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of the lens detection device and lens according to an embodiment of the present invention.

[0009] Figure 2 for Figure 1 A side view diagram of the lens detection device and the lens.

[0010] Figure 3 for Figure 1 The lens detection device and the magnified exploded diagram of a portion of the lens.

[0011] Figure 4 To adjust Figure 1 A three-dimensional schematic diagram of the image projector, lens stage, movable assembly part and support part of the lens inspection device.

[0012] Figure 5 for Figure 1 A top-view schematic diagram of the rotating component of the lens detection device driving the lens to rotate.

[0013] Figure 6 for Figure 1 A side view diagram of the image projector, image receiver, and lens forming an image projection path in the lens detection device.

[0014] Figure 7 for Figure 1 A top-view schematic diagram of the lens detection device where the test mark is not offset from the comparison mark.

[0015] Figure 8 for Figure 1 A top-view schematic diagram of the lens detection device where the test mark is offset from the comparison mark.

[0016] Explanation of reference numerals in the attached figures:

[0017] 10: Lens Inspection Device

[0018] 11: Base

[0019] 111: base body

[0020] 112: First assembly bracket

[0021] 113: Second assembly bracket

[0022] 12: Image Projector

[0023] 121: Illuminating components

[0024] 122: Imaging component

[0025] 13: Image receiver

[0026] 131: Beam Spectroscope

[0027] 132: Photosensitive element

[0028] 14: Lens mount

[0029] 141:Substrate

[0030] 142: Third assembly bracket

[0031] 143: Movable Assembly Section

[0032] 144: Drive components

[0033] 145: Rotating component

[0034] 146: First belt component

[0035] 147: Second belt component

[0036] 148: Support component

[0037] 1481: Slide

[0038] 149: Fasteners

[0039] 15: Image Adjustment Components

[0040] 20: Lens

[0041] AI: Direction

[0042] M1: Mark to be tested

[0043] M2: Alignment marker

[0044] R: Image projection path

[0045] S: Storage space Detailed Implementation

[0046] Please see Figures 1 to 3 . Figure 1 This is a three-dimensional schematic diagram of the lens detection device and lens according to an embodiment of the present invention. Figure 2 for Figure 1 A side view diagram of the lens detection device and the lens. Figure 3 for Figure 1 The lens detection device and the magnified exploded diagram of a portion of the lens.

[0047] The lens detection device 10 of this embodiment is used to detect a lens 20. The lens 20 is used, for example, in augmented reality (AR), but is not limited thereto. The lens detection device 10 includes a base 11, an image projector 12, an image receiver 13, and a lens stage 14. The image projector 12 is movably disposed on one side of the base 11, the image receiver 13 is disposed on the other side of the base 11, and the lens stage 14 is disposed on the base 11. Specifically, the base 11 includes a body 111, a first assembly bracket 112, and a second assembly bracket 113. The first assembly bracket 112 and the second assembly bracket 113 are respectively disposed on opposite sides of the body 111. The image projector 12 is movably disposed on the first assembly bracket 112. The image receiver 13 is disposed on the second assembly bracket 113.

[0048] Please refer to both at the same time. Figure 6 . Figure 6 for Figure 1 The image projector 12, image receiver 13, and lens 20 of the lens detection device 10 are shown in a side view schematic diagram, forming an image projection path R. An image projection path R is formed between the image projector 12 and the image receiver 13. Specifically, the image projector 12 has a light-emitting element 121 and an imaging element 122. The light-emitting element 121 is, for example, a light-emitting diode (LED). The imaging element 122 is located in the image projection path R and is closer to the lens stage 14 than the light-emitting element 121. The light emitted by the light-emitting element 121 forms a test mark through the imaging element 122.

[0049] The image receiver 13 has a beam splitter 131 and a photosensitive element 132. The beam splitter 131 and the photosensitive element 132 are located on the image projection path R. The beam splitter 131 is used to reflect the target mark to the photosensitive element 132. The photosensitive element 132 is, for example, a charge-coupled device (CCD). The photosensitive element 132 is used to receive and sense the target mark and has a comparison mark. In summary, the target mark generated by the image projector 12 is projected from top to bottom onto the image receiver 13.

[0050] The lens stage 14 is movably mounted on the base 11 and located along the image projection path R. The lens stage 14 includes a base plate 141, a third assembly bracket 142, a movable assembly part 143, a drive member 144, a rotating member 145, a first belt member 146, a second belt member 147, a support member 148, and a fastener 149. The third assembly bracket 142 is mounted on the base plate 141. The movable assembly part 143 is movably mounted on the third assembly bracket 142.

[0051] A rotating member 145 is disposed in the movable assembly section 143. A bearing member 148 is slidably disposed on the substrate 141, forming an accommodating space S between itself and the rotating member 145. The accommodating space S is used to accommodate the lens 20, allowing the lens 20 to abut against the bearing member 148 and the rotating member 145. A driving member 144 is disposed in the movable assembly section 143. The rotating member 145 is connected to the driving member 144 via a first belt member 146. A second belt member 147 is disposed on the rotating member 145 and is used for the lens 20 to abut against. Driven by the driving member 144, the first belt member 146 causes the rotating member 145 to rotate relative to the substrate 141, thereby causing the lens 20 to rotate.

[0052] The movable assembly part 143 adjusts the size of the accommodating space S by driving the rotating member 145 to translate relative to the substrate 141 and by allowing the supporting member 148 to translate relative to the substrate 141, thereby aligning the size of the accommodating space S with the size of the lens 20. Furthermore, the supporting member 148 has a groove 1481. A fastener 149 passes through the groove 1481 and is fastened to the substrate 141. In this way, when the size of the accommodating space S aligns with the size of the lens 20, the fastener 149 can position the supporting member 148 on the substrate 141.

[0053] In this embodiment, the lens detection device 10 may further include an image adjustment member 15. The image adjustment member 15 is disposed on the first assembly bracket 112 and located on the image projection path R. The image adjustment member 15 is closer to the lens stage 14 than the image projector 12 and is used to center the mark to be tested onto the lens 20.

[0054] In this embodiment, since the bearing member 148 and the rotating member 145 are used for the lens 20 to abut against, the rotating member 145 can rotate relative to the substrate 141 to drive the lens 20 to rotate. Therefore, the test mark rotated by the rotating member 145 can be compared with the comparison mark to detect whether the lens 20 is off-center. Through the aforementioned structure of the lens detection device 10, a large number of lenses 20 can be detected quickly, thereby improving the detection efficiency of the lens 20.

[0055] In this embodiment, the image projector 12 and the lens stage 14 are movably disposed on the base 11, but this is not a limitation. In other embodiments, the image projector and the lens stage may also be fixedly disposed on the base.

[0056] In this embodiment, the test mark generated by the image projector 12 is projected from top to bottom onto the image receiver 13, but this is not a limitation. In other embodiments, the image projector 12 and the image receiver 13 may also have their functions or positions interchanged. That is, the test mark generated by the image projector may also be projected from bottom to top onto the image receiver.

[0057] In this embodiment, the photosensitive element 132 has a comparison mark for comparison with the mark to be tested, but this is not a limitation. In other embodiments, the photosensitive element may not have a comparison mark. For example, the photosensitive element may directly sense whether the mark to be tested is misaligned, or a comparison mark may be provided on the substrate and located on the image projection path.

[0058] In this embodiment, the image projector 12 and the image receiver 13 are respectively disposed on opposite sides of the base 11, but this is not a limitation. In other embodiments, the image projector and the image receiver may also be integrated into a single element located on one side of the base, and for example, a reflector is provided on the other side of the base. For example, after the image projector projects the test mark toward the lens along a projection direction, the test mark passes through the lens and is reflected in the opposite direction of the projection direction to the image receiver through the reflector.

[0059] Please see Figures 4 to 6 . Figure 4 To adjust Figure 1 A three-dimensional schematic diagram of the image projector, lens stage, movable assembly part and support part of the lens inspection device. Figure 5 for Figure 1 A top-view schematic diagram of the rotating component of the lens detection device driving the lens to rotate.

[0060] In this embodiment, when the inspector wants to inspect lens 20, firstly, as follows: Figure 4 As shown, the lens stage 14 is moved along direction A to place the lens 20 in the accommodating space S. Next, the lens stage 14 is reset so that the lens 20 is positioned on the image projection path R. Then, the position of the image projector 12 is adjusted along direction B so that the image receiver 13 can clearly receive the target mark projected by the image projector 12. If the size of the accommodating space S does not match the size of the lens 20, the size of the accommodating space S can be adjusted by moving the support member 148 along direction C and the movable assembly part 143 along direction D, so that the size of the accommodating space S matches the size of the lens 20.

[0061] Next, as Figure 5 and Figure 6 As shown, the rotating member 145 is driven to rotate along direction E by the driving member 144, thereby causing the rotating member 145 to rotate the lens 20. Furthermore, the image projector 12 projects the test mark onto the lens 20 along the image projection path R along direction F, causing the test mark, rotated by the rotating member 145, to be projected along direction G onto the beam splitter 131 along the image projection path R. Then, the beam splitter 131 reflects the test mark, causing it to be projected along direction H onto the image receiver 13 to detect whether the test mark is offset from the comparison mark.

[0062] Please refer to the following: Figure 7 andFigure 8 . Figure 7 for Figure 1 A top-view schematic diagram of the lens detection device where the test mark is not offset from the comparison mark. Figure 8 for Figure 1 A top-view schematic diagram of the lens detection device where the test mark is offset from the comparison mark.

[0063] In detail, the light-emitting element 121 of the image projector 12 projects a test mark M1, for example, in the shape of a cross, onto the image receiver 13 through the imaging element 122, and the test mark M1 is rotated by the rotating element 145. The photosensitive element 132 of the image receiver 13 compares the rotating test mark M1 with a comparison mark M2, for example, in the shape of a cross.

[0064] Among them, such as Figure 7 As shown, when lens 20 is not eccentric and its concentricity with the optical axis is consistent, the test mark M1 will not be offset from the comparison mark M2. Specifically, the inspector can observe that the test mark M1, which is rotated by the rotating component 145, is stationary relative to the comparison mark M2; that is, the test mark M1, rotated by the rotating component 145, overlaps with the comparison mark M2. Based on the aforementioned observations, it can be concluded that... Figure 7 The lens shown, number 20, is of good quality.

[0065] like Figure 8 As shown, when Figure 8 When the lens 20 is eccentric and its concentricity with the optical axis is inconsistent, if the setting direction of the lens 20 is not tilted relative to the top surface of the substrate 141, the tester can observe that the test mark M1 is only offset from the comparison mark M2. If the setting direction of the lens 20 is more tilted relative to the top surface of the substrate 141, the tester can observe that in addition to being offset from the comparison mark M2, the center point of the test mark M1, which is rotated by the rotating member 145, will also rotate relative to the comparison mark M2 along direction I around the center point of the comparison mark M2. Based on the aforementioned observations, it can be concluded that... Figure 8 Lens 20 shown is defective.

[0066] According to the lens inspection apparatus of the above embodiment, since the bearing member and the rotating member are used for the lens to rest against, the rotating member can rotate relative to the substrate to drive the lens to rotate. Therefore, the test mark that is rotated by the rotating member can be compared with the comparison mark to detect whether the lens is off-center. Through the aforementioned structure of the lens inspection apparatus, a large number of lenses can be inspected quickly, thereby improving the lens inspection efficiency.

[0067] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to this specification.

Claims

1. A lens inspection device for inspecting a lens, characterized in that, The lens detection device includes: A base; An image projector is disposed on the base; An image receiver is disposed on the base, and an image projection path is formed between the image projector and the image receiver; as well as A lens stage is disposed on the base and located in the image projection path. The lens stage includes a base plate, a support member, and a rotating member. The support member and the rotating member are disposed on the base plate, and an accommodating space is formed between the support member and the rotating member. The accommodating space is used to accommodate the lens so that the lens abuts against the support member and the rotating member, and the rotating member rotates relative to the base plate to drive the lens to rotate. The image receiver is used to receive and sense a test mark projected by the image projector toward the lens along the image projection path, and the test mark is rotated by the rotating component.

2. The lens inspection device as described in claim 1, characterized in that, The image projector has a light-emitting element and an imaging element. The imaging element is located in the image projection path and is closer to the lens stage than the light-emitting element. The light emitted by the light-emitting element passes through the imaging element to form the mark to be tested. The image receiver further has a photosensitive element located in the image projection path and used to receive and sense the mark to be tested.

3. The lens inspection device as described in claim 1, characterized in that, The base includes a body, a first assembly bracket and a second assembly bracket, the first assembly bracket and the second assembly bracket are respectively disposed on opposite sides of the base, the image projector is movably disposed on the first assembly bracket and the image receiver is disposed on the second assembly bracket.

4. The lens inspection device as described in claim 3, characterized in that, The lens stage further includes a third assembly bracket and a movable assembly part. The third assembly bracket is disposed on the substrate, and the movable assembly part is movably disposed on the third assembly bracket. The rotating member is disposed on the movable assembly part, and the movable assembly part adjusts the size of the accommodating space by driving the rotating member to translate relative to the substrate.

5. The lens inspection device as described in claim 4, characterized in that, The lens stage further includes a drive member and a first belt member. The drive member is disposed in the movable assembly part. The rotating member is connected to the drive member through the first belt member, and the first belt member drives the rotating member to rotate through the drive member.

6. The lens inspection device as described in claim 5, characterized in that, The lens stage further includes a second belt component, which is disposed on the rotating member and used for the lens to rest against.

7. The lens inspection device as described in claim 3, characterized in that, It further includes an image adjustment component disposed on the first assembly bracket and located in the image projection path. The image adjustment component is closer to the lens stage than the image projector and is used to center the test mark onto the lens.

8. The lens inspection device as described in claim 1, characterized in that, The support member is slidably disposed on the substrate. The support member adjusts the size of the accommodating space by translating relative to the substrate, so that the size of the accommodating space matches the size of the lens.

9. The lens inspection device as described in claim 8, characterized in that, The lens stage further includes a fastener, and the support member has a groove. The fastener is inserted through the groove and fastened to the substrate so that the support member is positioned on the substrate.

10. The lens inspection device as described in claim 1, characterized in that, The lens stage is movably mounted on the base.

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