Multi-aperture telecentric lens optical architecture and operating method thereof
Through the optical architecture of multi-aperture telecentric lens, the lens aperture and working distance are independently adjusted, which solves the contradiction between resolution and depth of field during the detection process, and achieves efficient high-resolution and deep depth of field imaging, saving time and space.
Patent Information
- Application Number
- CN202311871932.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-07-01
AI Technical Summary
In the prior art, detecting small defects requires a large aperture lens to provide high resolution, but the depth of field is shallow, and detecting large samples requires a small aperture lens to provide deep depth of field, resulting in a long detection process time and large machine size.
The multi-aperture telecentric lens optical architecture is adopted, and the aperture and working distance of multiple lenses are independently adjusted to have different resolutions and depth of field at the same time, and images are captured through multiple cameras in the same step.
Taking into account the needs of high resolution and deep depth of field in a single shooting step, saving time and space, and avoiding the disadvantages of multiple shooting and multi-lens detection.
Smart Images
Figure CN120233511A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to an optical architecture of a multi-aperture telecentric lens and an operation method thereof. Background Art
[0002] In the field of optical inspection, detecting defects with small sizes requires a lens with a large aperture to provide high-resolution imaging. However, a lens with a large aperture has a relatively shallow depth of field, resulting in abnormal inspection of samples with a large thickness. On the contrary, detecting samples with a large thickness requires a lens with a small aperture to provide a deep depth of field. However, a lens with a small aperture has a relatively low resolution and cannot clearly image defects with small sizes.
[0003] Therefore, imaging that meets the requirements of high resolution and deep depth of field needs to scan the sample by multiple groups of inspection lenses in turn or perform multiple shootings with different resolution settings. However, the above methods have the disadvantages of too long inspection time and increased volume of the inspection machine.
[0004] In view of this, how to provide a lens and a corresponding operation method that can solve the above problems is still one of the problems to be solved in the current research field of the industry. Summary of the Invention
[0005] One technical aspect of the present disclosure is an operation method of an optical architecture of a multi-aperture telecentric lens.
[0006] In an embodiment of the present disclosure, the operation method of the optical architecture of the multi-aperture telecentric lens includes respectively adjusting an aperture of each of a plurality of lenses, so that the optical architecture of the multi-aperture telecentric lens simultaneously has different first resolutions and second resolutions and different first depths of field and second depths of field; and capturing images through a plurality of cameras respectively connected to the plurality of lenses.
[0007] In an embodiment of the present disclosure, the operation method of the optical architecture of the multi-aperture telecentric lens includes adjusting a working distance of one of the plurality of lenses before respectively adjusting the apertures of the plurality of lenses.
[0008] In an embodiment of the present disclosure, adjusting the apertures of the plurality of lenses includes adjusting a first aperture of a first lens and a second aperture of a second lens, so that the first lens has a first resolution and a first depth of field and the second lens has a second resolution and a second depth of field, where the first resolution is greater than the second resolution and the second depth of field is greater than the first depth of field.
[0009] In an embodiment of the present disclosure, capturing images through a plurality of cameras respectively connected to the plurality of lenses is performed in the same step.
[0010] One technical aspect of the present disclosure is an operation method of an optical architecture of a multi-aperture telecentric lens.
[0011] In an embodiment of the present disclosure, a method for operating a multi-aperture telecentric lens optical architecture includes adjusting the working distances of a plurality of lenses according to a reference plane, so that the multi-aperture telecentric lens optical architecture has an initial depth of field, wherein each of the plurality of lenses includes an aperture; respectively adjusting the plurality of apertures of the plurality of lenses and adjusting the working distance of at least one of the plurality of lenses, so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to a third depth of field; and capturing images through a plurality of cameras respectively connected to the plurality of lenses.
[0012] In an embodiment of the present disclosure, adjusting the working distance of at least one of the plurality of lenses so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to a third depth of field includes fixing the working distance of the first lens and adjusting the working distance of the second lens so that the range of the second depth of field of the second lens moves. The first lens has a first depth of field.
[0013] In an embodiment of the present disclosure, the range of the third depth of field is greater than the range of the first depth of field of the first lens and the range of the second depth of field of the second lens.
[0014] In an embodiment of the present disclosure, adjusting the working distance of at least one of the plurality of lenses so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to a third depth of field includes adjusting the working distance of the first lens so that the range of the first depth of field of the first lens moves; and adjusting the working distance of the second lens so that the range of the second depth of field of the second lens moves.
[0015] In an embodiment of the present disclosure, capturing images through a plurality of cameras respectively connected to the plurality of lenses is performed in the same step.
[0016] Another technical aspect of the present disclosure is a multi-aperture telecentric lens optical architecture, including a plurality of lenses, a housing connecting the plurality of lenses, and a plurality of cameras. Each of the plurality of lenses includes an aperture and a working distance adjusting device. The plurality of cameras are respectively connected to the plurality of lenses.
[0017] In the above embodiment, by independently adjusting the plurality of apertures of the plurality of lenses, the method for operating the multi-aperture telecentric lens optical architecture can make the plurality of lenses respectively have high resolution and deep depth of field. The telecentric lens can make the image magnification of different object distances within the depth of field approximately equal. In this way, the requirements of high resolution and deep depth of field can be taken into account in a single shooting step. Since the plurality of lenses are connected as a whole through the housing, it is not necessary to move the entire lens or the camera connected to the lens to adjust the working distance. The multi-aperture telecentric lens optical architecture of the present disclosure can provide different resolutions and depths of field without multiple shootings or using multiple independent lenses, and has the advantages of saving time and space. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1Schematic diagram of a multi-aperture telecentric lens optical architecture according to an embodiment of the present disclosure;
[0019] Figure 2 Schematic diagram of a multi-aperture telecentric lens optical architecture according to another embodiment of the present disclosure;
[0020] Figure 3 Flowchart of an operation method of a multi-aperture telecentric lens optical architecture according to an embodiment of the present disclosure;
[0021] Figure 4 According to Figure 3 Schematic diagram of an operation method of a multi-aperture telecentric lens optical architecture;
[0022] Figure 5 According to Figure 3 Schematic diagram of a sample and depth of field range of an operation method of a multi-aperture telecentric lens optical architecture;
[0023] Figure 6 For Figure 5 Schematic diagram of an image obtained by a sample in[] through a multi-aperture telecentric lens optical architecture;
[0024] Figure 7 Flowchart of an operation method of a multi-aperture telecentric lens optical architecture according to another embodiment of the present disclosure;
[0025] Figure 8 For Figure 7 Schematic diagram of an operation method of a multi-aperture telecentric lens optical architecture;
[0026] Figure 9 According to Figure 8 Schematic diagram of a sample and depth of field range of an operation method of a multi-aperture telecentric lens optical architecture;
[0027] Figure 10 For Figure 7 Schematic diagram of an operation method of a multi-aperture telecentric lens optical architecture;
[0028] Figure 11 According to Figure 10 Schematic diagram of a sample and depth of field range of an operation method of a multi-aperture telecentric lens optical architecture;
[0029] Figure 12 For Figure 11 Schematic diagram of an image obtained by a sample in[] through a multi-aperture telecentric lens optical architecture.
[0030]
Symbol Explanation
[0031] 100, 100a: Multi-aperture telecentric lens optical architecture
[0032] 110A: First lens
[0033] 110B: Second lens
[0034] 110C: Third lens
[0035] 112A: First aperture
[0036] 112B: Second aperture
[0037] 114A: First working distance adjustment device
[0038] 114B: Second working distance adjustment device
[0039] 120: Camera
[0040] 120A: First camera
[0041] 120B: Second camera
[0042] 120C: Third camera
[0043] 130: Housing
[0044] 200, 400, 600: Sample
[0045] 202, 402, 602: First surface
[0046] 204, 404, 604: Second surface
[0047] 300, 500: Operating method of multi - aperture telecentric lens optical architecture
[0048] 310, 320, 322, 330, 340, 510, 520, 530, 540: Steps 406, 606: Third surface
[0049] 410: Small - size defect
[0050] 608: Fourth surface
[0051] WD1: First working distance
[0052] WD2: Second working distance
[0053] DOF0: Initial depth of field
[0054] DOF1: First depth of field
[0055] DOF2: Second depth of field
[0056] DOF3: Third depth of field
[0057] FP0: Initial focal plane
[0058] FP1: First focal plane
[0059] FP2: Second focal plane
[0060] IM1, IM2: Images
[0061] REF: Reference plane Detailed implementation manners
[0062] The following will disclose multiple implementation manners of the present invention with the accompanying drawings. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the accompanying drawings, some conventional structures and elements will be shown in a simple schematic manner in the accompanying drawings. And for the sake of clarity, the thickness of layers and regions in the drawings may be exaggerated, and the same reference numerals in the description of the drawings denote the same elements.
[0063] Figure 1 It is a schematic diagram of a multi-aperture telecentric lens optical architecture 100 according to an embodiment of the present disclosure. The multi-aperture telecentric lens optical architecture 100 includes multiple lenses, a housing connecting the multiple lenses, and multiple cameras. In this embodiment, two lenses and two cameras are taken as examples. The first lens 110A has a first aperture 112A and a first working distance adjustment device 114A. The second lens 110B has a second aperture 112B and a second working distance adjustment device 114B. The first camera 120A and the second camera 120B are respectively connected to the first lens 110A and the second lens 110B. The optical axis directions of the first lens 110A and the second lens 110B differ by ninety degrees, but the present disclosure is not limited thereto.
[0064] Depth of field (DOF) means the relatively clear imaging range before and after the focal point or focal plane of the camera. When the aperture of the lens is small, it has a deeper depth of field and lower resolution. When the aperture of the lens is large, it has a shallower depth of field and higher resolution.
[0065] For example, the sample 200 has a first surface 202 and a second surface 204, and small-sized defects are located on the second surface 204. When the resolution of a single detection lens is sufficient to analyze the small-sized defects, the corresponding depth of field cannot cover both the first surface 202 and the second surface 204 at the same time. When the depth of field of a single detection lens can cover both the first surface 202 and the second surface 204 at the same time, the corresponding resolution cannot make the small-sized defects on the second surface 204 clearly imaged. The "deep depth of field" referred to herein means the depth of field that can cover both the first surface 202 and the second surface 204 of the sample 200 at the same time. The "high resolution" referred to herein means the resolution that can enable the small-sized defects to be detected and analyzed in the imaging.
[0066] Generally speaking, to clearly image defects of different sizes on the first surface 202 and the second surface 204 of the sample 200, it is necessary to scan the sample 200 in turn through multiple groups of detection lenses, or to take multiple shots by using different resolution settings. However, the above methods will result in the disadvantages of too long detection time and increased volume of the detection machine.
[0067] The first aperture 112A of the first lens 110A and the second aperture 112B of the second lens 110B are independent of each other, enabling the first lens 110A and the second lens 110B to have different resolutions and depths of field, thereby meeting the requirements of high resolution and deep depth of field in a single shooting step. The corresponding operation method will be described later Figures 3 to 6 description.
[0068] The first working distance adjustment device 114A of the first lens 110A and the second working distance adjustment device 114B of the second lens 110B can relatively move the depth of field ranges of the first lens 110A and the second lens 1120B. Thereby meeting the requirements of high resolution and deep depth of field in a single shooting step. The corresponding operation method will be described later Figures 7 to 11 description.
[0069] The housing 130 of the multi-aperture telecentric lens optical structure 100 connects the first lens 110A and the second lens 110B into one body. Therefore, the relative positions of the first lens 110A and the second lens 110B remain unchanged, and the relative positions of the first camera 120A and the second camera 120B remain unchanged. In other words, the multi-aperture telecentric lens optical structure 100 of the present disclosure can provide different resolutions and depths of field without multiple shootings or using multiple independent lenses, having the advantages of saving time and space.
[0070] Figure 2 FIG. 17 is a schematic diagram of a multi-aperture telecentric lens optical structure 100a according to another embodiment of the present disclosure. The difference between the multi-aperture telecentric lens optical structure 100a and the multi-aperture telecentric lens optical structure 100 lies in that the number of lenses 110 and cameras 120 is three. The housing 130 connects the first lens 110A, the second lens 110B, and the third lens 110C into one body. The third lens 110C is connected to the third camera 120C. The optical axis directions of the first lens 110A and the third lens 110C differ by ninety degrees, but the present disclosure is not limited thereto.
[0071] In the following paragraphs, the Figure 1 multi-aperture telecentric lens optical structure 100 in will be taken as an example to illustrate the operation method of the multi-aperture telecentric lens optical structure. Therefore, the structures and elements that have been described will not be repeated.
[0072] Figure 3FIG. 300 is a flowchart of an operating method of a multi-aperture telecentric lens optical architecture according to an embodiment of the present disclosure. Figure 4 is Figure 3 a schematic diagram of an operating method 300 of a multi-aperture telecentric lens optical architecture. Figure 5 FIG. 300 is a schematic diagram of a sample and a depth of field range of an operating method of a multi-aperture telecentric lens optical architecture. Figure 6 is Figure 5 a schematic diagram of an image obtained by the sample in FIG. through a multi-aperture telecentric lens optical architecture.
[0073] As Figure 5 shown, in this embodiment, the small-sized defect 410 is located on the second surface 404 of the sample 400, and the larger-sized defects are located on the first surface 402 and the third surface 406 of the sample 400. The operating method 300 of the multi-aperture telecentric lens optical architecture is used to focus a lens with high resolution and a shallower depth of field on the second surface 404 to capture an image of the small-sized defect 410, and at the same time, the imaging range of another lens with lower resolution and a deeper depth of field can cover the entire sample 400.
[0074] Referring to Figure 3 . The operating method 300 of the multi-aperture telecentric lens optical architecture starts at step 310: adjusting the working distance of at least one of the plurality of lenses. Step 310 may optionally be followed by step 320: adjusting the working distance of another one of the plurality of lenses. Alternatively, step 310 may optionally be followed by step 322: fixing the working distance of another one of the plurality of lenses.
[0075] Referring to Figure 4 and Figure 5 . The first lens 110A in this embodiment is configured to image the small-sized defect 410, but the present disclosure is not limited thereto. In this step, the first working distance adjusting device 114A is rotated to adjust the first working distance WD1 of the first lens 110A such that the first focal plane FP1 of the first lens 110A is substantially aligned with the second surface 404 of the sample 400, or at least the first depth of field DOF1 covers the second surface 404.
[0076] In one embodiment, the second working distance WD2 of the second lens 110B can be fixed as required (step 320, Figure 3 ), for example, when the preset range of the second depth of field DOF2 can already cover the entire sample 400. In another embodiment, the second working distance adjusting device 114B is rotated to adjust the second working distance WD2 (step 322, Figure 3)。The second focal plane FP2 of the second lens 110B is generally located at the center of the sample 400. The position of the second focal plane FP2 of the second lens 110B is determined according to the height of the sample 400. The first focal plane FP1 and the second focal plane FP2 may also overlap.
[0077] The above steps of adjusting the first working distance adjusting device 114A and the second working distance adjusting device 114B can change the relative distance between the lens groups inside the first lens 110A and the second lens 110B and the sample 400. Since the first lens 110A and the second lens 110B are integrally connected by the housing 130, in step 310, the working distance can be adjusted without moving the entire lens or the camera connected to the lens, which has the advantage of saving space.
[0078] The above step 310 may also be to adjust the second lens 110B, and then step 320 and step 322 are correspondingly changed to adjust the first lens 110A. The order of step 310, step 320 or step 322 can be reversed.
[0079] Refer to Figure 3 。Continue with step 330: Adjust the apertures of the multiple lenses respectively, so that the multi-aperture telecentric lens optical structure simultaneously has different first resolutions and second resolutions, and different first depths of field and second depths of field.
[0080] Refer to Figure 4 and Figure 5 。In this step, adjust the first aperture 112A of the first lens 110A so that the first lens 110A has a first resolution and a first depth of field DOF1. Adjust the second aperture 112B of the second lens 110B so that the second lens 110B has a second resolution and a second depth of field DOF2. The first aperture 112A is a large aperture, and the second aperture 112B is a small aperture. The first resolution is greater than the second resolution, so the second depth of field DOF2 is greater than the first depth of field DOF1. The range of the first depth of field DOF1 is within the range of the second depth of field DOF2. Here, the first resolution is the high resolution defined above, and the second depth of field DOF2 is the deep depth of field defined above. In other embodiments, the range of the first depth of field DOF1 and the range of the second depth of field DOF2 may be discontinuous.
[0081] As Figure 5 shown, the range of the first depth of field DOF1 covers the second surface 404 of the sample 400, so small size defects 410 can be imaged by the first lens 110A with the first resolution (high resolution). The range of the second depth of field DOF2 of the second lens 110B covers the first surface 402, the second surface 404 and the third surface 406 at the same time. In other words, the entire sample 400 can be imaged by the second lens 110B with the second depth of field DOF2 (deep depth of field).
[0082] Reference Figure 3 Finally, step 340 is performed: in the same step, images are captured by multiple cameras respectively connecting multiple lenses.
[0083] Reference Figure 4 And Figure 6 In this step, the image captured by the first camera 120A contains a high-resolution image of the small-size defect 410, and the image captured by the second camera 120B covers the image of the entire sample 400. A telecentric lens can make the image magnification at different object distances within the depth of field approximately equal. Therefore, the multi-aperture telecentric lens optical architecture 100 can meet the requirements of high resolution and deep depth of field through the images IM1 obtained by multiple lenses with independent apertures. Figure 6 The synthesized image IM1 is exemplarily shown in. The synthesis or processing method between the images obtained by the multiple lenses of the multi-aperture telecentric lens optical architecture 100 does not limit this disclosure.
[0084] According to the above, the operation method 300 of the multi-aperture telecentric lens optical architecture can make the first lens 110A and the second lens 110B have high resolution and deep depth of field respectively by independently adjusting the first aperture 112A of the first lens 110A and the second aperture 112B of the second lens 110B. In this way, the requirements of high resolution and deep depth of field can be taken into account in a single shooting step. Since the first lens 110A and the second lens 110B are connected as a whole through the housing 130, there is no need to move the entire lens or the camera connected to the lens to adjust the working distance. Therefore, the multi-aperture telecentric lens optical architecture 100 can provide different resolutions and depths of field without multiple shootings or using multiple independent lenses, which has the advantages of saving time and space.
[0085] Figure 7 It is a flowchart of an operation method 500 of a multi-aperture telecentric lens optical architecture according to another embodiment of this disclosure. Figure 8 Is Figure 7 A schematic diagram of the operation method 500 of the multi-aperture telecentric lens optical architecture. Figure 9 According to Figure 8 A schematic diagram of the sample and the depth of field range of the operation method 500 of the multi-aperture telecentric lens optical architecture. Figure 10 Is Figure 7 A schematic diagram of the operation method of the multi-aperture telecentric lens optical architecture. Figure 11 According to Figure 10 A schematic diagram of the sample and the depth of field range of the operation method 500 of the multi-aperture telecentric lens optical architecture. Figure 12 Is Figure 11 A schematic diagram of the image of the sample obtained by the multi-aperture telecentric lens optical architecture in.
[0086] As Figure 10 shown, in this embodiment, the sample 600 has a relatively high height. When the resolution of a single lens meets the detection requirements, the corresponding depth of field cannot cover the entire height of the sample 600. Therefore, the operation method 500 of the multi-aperture telecentric lens optical architecture is used to expand the depth of field of the multi-aperture telecentric lens optical architecture 100.
[0087] Refer to Figure 7 . The operation method 500 of the multi-aperture telecentric lens optical architecture starts from step 510: adjusting the working distances of multiple lenses according to a reference plane to enable the multi-aperture telecentric lens optical architecture to have an initial depth of field.
[0088] Refer to Figure 8 and Figure 9 . According to Figure 9 the reference plane REF shown in, align the working distances of the first lens 110A and the second lens 110B. As Figure 8 shown, the first working distance WD1 and the second working distance WD2 of the first lens 110A and the second lens 110B are approximately equal, and the first lens 110A and the second lens 110B have the same initial focusing plane FP0. In this step, the initial depth of field DOF0 of the multi-aperture telecentric lens optical architecture 100 is equivalent to the first depth of field DOF1 of the first lens 110A and is also equivalent to the second depth of field DOF2 of the second lens 110B. The reference plane REF can be any cross-section in the sample 600.
[0089] The first depth of field DOF1 and the second depth of field DOF2 in this embodiment are approximately the same, but the present disclosure is not limited thereto. For example, in other embodiments, when the first depth of field DOF1 and the second depth of field DOF2 are different (not shown in the figure), the initial depth of field DOF0 is equivalent to the sum after the superposition of the first depth of field DOF1 of the first lens 110A and the second depth of field DOF2 of the second lens 110B. For example, when the first depth of field DOF1 is greater than the second depth of field DOF2, the initial depth of field DOF0 is equivalent to the first depth of field DOF1. When the second depth of field DOF2 is greater than the first depth of field DOF1, the initial depth of field DOF0 is equivalent to the second depth of field DOF2.
[0090] Refer to Figure 7 . The operation method 500 of the multi-aperture telecentric lens optical architecture continues with step 520: adjusting the sizes of multiple apertures of multiple lenses.
[0091] Refer to Figure 8 . In this step, according to the resolution required for detecting the sample 600, adjust the first aperture 112A of the first lens 110A and the second aperture 112B of the second lens 110B. The sizes of the first aperture 112A and the second aperture 112B can be the same or different.
[0092] Reference Figure 7 。The operation method 500 of the multi-aperture telecentric lens optical architecture continues with step 530: adjusting the working distance of at least one of the multiple lenses to expand the initial depth of field of the multi-aperture telecentric lens optical architecture to a third depth of field.
[0093] Reference Figure 10 And Figure 11 。In this embodiment, step 530 takes the example of fixing the first working distance WD1 of the first lens 110A and adjusting the second working distance WD2 of the second lens 110B. The range of the second depth of field DOF2 of the second lens 110B moves downward relative to the range of the first depth of field DOF1. As Figure 11 shown, the third depth of field DOF3 after the first depth of field DOF1 and the second depth of field DOF2 are superimposed can cover the entire height of the sample 600. In other words, the range of the third depth of field DOF3 is greater than the range of the first depth of field DOF1 and also greater than the range of the second depth of field DOF2. In other embodiments, the first depth of field DOF1 and the second depth of field DOF2 may be discontinuous (not shown in the figure), and then the third depth of field DOF3 is the sum of the first depth of field DOF1 and the second depth of field DOF2.
[0094] In another embodiment, step 530 (see Figure 7 ) can be to adjust the first working distance WD1 of the first lens 110A and adjust the second working distance WD2 of the second lens 110B. For example, in step 510 (see Figure 7 ), another reference plane located at the center of the height of the sample 600 is selected. In step 520 (see Figure 7 ), the range of the first depth of field DOF1 is moved upward relative to the reference plane REF, and the range of the second depth of field DOF2 is moved downward relative to the reference plane REF and the range of the first depth of field DOF1. In other words, as long as the range of the third depth of field DOF3 can cover the entire height of the sample 600.
[0095] Reference Figure 7 。Finally, step 540 is performed: in the same step, images are captured by multiple cameras respectively connected to the multiple lenses.
[0096] Reference Figures 10 to 12 。In this step, the image captured by the first camera 120A includes the third surface 606 and the fourth surface 608 of the sample 600, and the image captured by the second camera 120B includes the first surface 602 and the second surface 604 of the sample 600. A telecentric lens can make the image magnification at different object distances within the depth of field approximately equal. Therefore, the image IM2 obtained by the multi-aperture telecentric lens optical architecture 100 through multiple lenses with independent apertures can meet the requirements of high resolution and deep depth of field. Figure 12The synthesized image IM2 is exemplarily shown. The synthesis or processing method between the images obtained by the multiple lenses of the multi-aperture telecentric lens optical architecture 100 is not intended to limit this disclosure.
[0097] According to the above, the operation method 500 of the multi-aperture telecentric lens optical architecture can make the first lens 110A and the second lens 110B have the required resolution and depth of field respectively by independently adjusting the first aperture 112A of the first lens 110A and the second aperture 112B of the second lens 110B. In this way, the requirements of high resolution and deep depth of field can be taken into account in a single shooting step. Since the first lens 110A and the second lens 110B are connected as a whole through the housing 130, there is no need to move the entire lens or the camera connected to the lens to adjust the working distance. Therefore, the multi-aperture telecentric lens optical architecture 100 can provide different resolutions and depths of field without multiple shootings or using multiple independent lenses, which has the advantages of saving time and space.
[0098] Although the present invention has been disclosed as above in the embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to that defined by the appended claims.
Claims
1. An operating method for an optical architecture of a multi-aperture telecentric lens, characterized in that, Comprising: Adjusting the apertures of multiple lenses respectively, so that the multi-aperture telecentric lens optical architecture simultaneously has different first resolution and second resolution, and different first depth of field and second depth of field; and Capturing images through multiple cameras respectively connected to the multiple lenses.
2. The operating method of the multi-aperture telecentric lens optical architecture according to claim 1, characterized in that, Further comprising: Before adjusting the apertures of the multiple lenses respectively, adjusting the working distance of one of the multiple lenses.
3. The operating method of the multi-aperture telecentric lens optical architecture according to claim 1, characterized in that, Wherein adjusting the apertures of the multiple lenses respectively comprises: Adjusting a first aperture of a first lens, so that the first lens has the first resolution and the first depth of field; and Adjusting a second aperture of a second lens, so that the second lens has the second resolution and the second depth of field, wherein the first resolution is greater than the second resolution, and the second depth of field is greater than the first depth of field.
4. The operating method of the multi-aperture telecentric lens optical architecture according to claim 1, characterized in that Wherein capturing images through the multiple cameras respectively connected to the multiple lenses is performed in the same step.
5. A method for operating an optical architecture of a multi-aperture telecentric lens, characterized in that, Comprising: Adjusting the working distances of multiple lenses according to a reference plane, so that the multi-aperture telecentric lens optical architecture has an initial depth of field, wherein each of the multiple lenses comprises an aperture; Adjusting the apertures of the multiple lenses respectively; Adjusting the working distance of at least one of the multiple lenses, so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to a third depth of field; and And Capturing images through multiple cameras respectively connected to the multiple lenses.
6. The operating method of the multi-aperture telecentric lens optical architecture according to claim 5, characterized in that Wherein adjusting the working distance of at least one of the multiple lenses, so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to the third depth of field comprises: Fixing the working distance of a first lens, wherein the first lens has a first depth of field; and Adjusting the working distance of a second lens, so that the range of a second depth of field of the second lens moves.
7. The operating method of the multi-aperture telecentric lens optical architecture according to claim 6, characterized in that Wherein the range of the third depth of field is greater than the range of the first depth of field of the first lens and the range of the second depth of field of the second lens.
8. The operating method of the multi-aperture telecentric lens optical architecture according to claim 5, characterized in that Wherein adjusting the working distance of at least one of the multiple lenses, so that the initial depth of field of the multi-aperture telecentric lens optical architecture is expanded to the third depth of field comprises: Adjusting the working distance of a first lens, so that the range of a first depth of field of the first lens moves; and Adjusting the working distance of a second lens, so that the range of a second depth of field of the second lens moves.
9. The operating method of the multi-aperture telecentric lens optical architecture according to claim 5, characterized in that Wherein capturing images through the multiple cameras respectively connected to the multiple lenses is performed in the same step.
10. An optical architecture of a multi-aperture telecentric lens, characterized in that, Comprising: Multiple lenses, wherein each of the multiple lenses comprises an aperture and a working distance adjusting device; A housing connecting the multiple lenses; and Multiple cameras respectively connected to the multiple lenses.