An integrated optical system for detecting the resolution of optical products

Abstract

The utility model relates to an integrated optical system for detecting the resolution of optical products, including a detection lens optical group, a collimator optical group, and a target plate optical group. The detection lens optical group realizes the detection function through a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the collimator optical group realizes the imaging function through a seventh lens, an eighth lens, a ninth lens, and a tenth lens; the target plate glass of the target plate optical group is the observation target. The total optical lengths of the detection lens optical group and the collimator optical group are 54.5 mm and 443 mm respectively. The resolution of the product to be tested is detected by the three optical groups, so that the volume of the integrated detection equipment is less than 10m 3 On the premise of ensuring the testing capability and accuracy, the test space is reduced, the detection efficiency of optical products is improved, and the difficulty of work caused by darkroom tests and field tests is avoided.

Description

Technical Field

[0001] The utility model relates to the field of optical technology, in particular to an integrated optical system for detecting the resolution of optical products. Background Art

[0002] The resolution of an optical system refers to the ability to distinguish the minimum distance between two adjacent object points, and is one of the important indicators for judging whether a product is qualified.

[0003] The conventional method of testing resolution is to measure in a dark room and adjust the integrating sphere and target plate according to the illumination environment and contrast requirements of the product.

[0004] To ensure the accuracy of the test, the test will also be conducted in the field. To ensure the accuracy of the test, the test is required to be conducted in an environment far away from the city and with less light. Since the test distance in the field can be controlled, the test data is more accurate.

[0005] However, the darkroom testing method usually requires a sufficiently large site, and has high requirements for the distance and environment of the site. Now that urbanization is becoming increasingly larger, it is becoming increasingly difficult to find a suitable site for field testing. Therefore, solving related problems will inevitably require improving the detection efficiency of optical products and reducing unnecessary work difficulty.

[0006] Therefore, in order to ensure the accuracy of the test and improve the detection efficiency of optical products, it is necessary to provide an optical system for integrated optical product resolution detection equipment. Utility Model Content

[0007] In view of the above-mentioned problems, the utility model analyzes and designs the optical system of the integrated detection equipment to provide an integrated optical system for optical product resolution detection. The integrated optical system makes the volume of the detection equipment less than 10m 3 Under the premise of ensuring the testing capability and accuracy, the equipment reduces the testing space, improves the detection efficiency of optical products, and avoids the difficulty of work caused by darkroom tests and field tests.

[0008] The technical solution of the utility model is:

[0009] An integrated optical system for detecting the resolution of optical products, the optical system is composed of a detection lens optical group, a collimator optical group and a target plate optical group from the observation side to the detection side; wherein:

[0010] Detection lens optical group: first lens, second lens, third lens, first cemented lens (fourth lens and fifth lens cemented), sixth lens.

[0011] Collimator optical group: seventh lens, eighth lens, ninth lens, tenth lens.

[0012] Target plate optical group: target plate glass.

[0013] The object side surface of the first lens is convex, and the image side surface is concave;

[0014] The object side surface of the second lens is convex, and the image side surface is concave;

[0015] The object side surface of the third lens is convex, and the image side surface is concave;

[0016] The object side surface of the fourth lens is convex, and the image side surface is convex;

[0017] The object side surface of the fifth lens is a concave surface, and the image side surface is a concave surface;

[0018] The object side surface of the sixth lens is convex, and the image side surface is convex;

[0019] The object side surface of the seventh lens is convex, and the image side surface is concave;

[0020] The object side surface of the eighth lens is concave, and the image side surface is convex;

[0021] The object side surface of the ninth lens is convex, and the image side surface is convex;

[0022] The object side surface of the tenth lens is concave, and the image side surface is convex;

[0023] The target plate glass is etched flat glass.

[0024] Preferably, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are all spherical lenses.

[0025] Preferably, the first lens has an object side curvature radius of 31.92mm and a light-clearing aperture of 34mm, the first lens has an image side curvature radius of 776.2mm and a light-clearing aperture of 34mm, and a center thickness of 6.13mm; the second lens has an object side curvature radius of 16.6mm and a light-clearing aperture of 24mm, the second lens has an image side curvature radius of 48.41mm and a light-clearing aperture of 24mm, and a center thickness of 5.56mm; the third lens has an object side curvature radius of 359.7mm and a light-clearing aperture of 24mm, and the The third lens has a curvature radius of 9.08mm on the image side, a light-clearing diameter of 24mm, and a center thickness of 5.14mm; the fourth lens has a curvature radius of 48.87mm on the object side, a light-clearing diameter of 16mm, the fourth lens has a curvature radius of 10mm on the image side, a light-clearing diameter of 16mm, and a center thickness of 5.55mm; the fifth lens has a curvature radius of 10mm on the object side, a light-clearing diameter of 16mm, the fifth lens has a curvature radius of 11.72mm on the image side, a light-clearing diameter of 16mm, and a center thickness of 3mm; the sixth lens The object side curvature radius is 12.16mm, the light aperture is 16mm, the image side curvature radius of the sixth lens is 73.45mm, the light aperture is 16mm, and the center thickness is 5mm; the object side curvature radius of the seventh lens is 305.5mm, the light aperture is 156mm, the image side curvature radius of the seventh lens is 3597mm, the light aperture is 156mm, and the center thickness is 28.2mm; the object side curvature radius of the eighth lens is 1009.3mm, the light aperture is 150mm, and the image side curvature of the eighth lens is The radius is 1312.2mm, the aperture is 150mm, and the center thickness is 18.3mm; the ninth lens has a curvature radius of 337.3mm on the object side, a clear aperture of 126mm, the ninth lens has a curvature radius of 448.7mm on the image side, a clear aperture of 126mm, and a center thickness of 26.7mm; the tenth lens has a curvature radius of 251.8mm on the object side, a clear aperture of 112mm, the tenth lens has a curvature radius of 721.1mm on the image side, a clear aperture of 112mm, and a center thickness of 14.8mm.

[0026] Preferably, the glass material of the first lens is H-LAF2 of CDGM, the glass material of the second lens is H-ZK9B of CDGM, the glass material of the third lens is H-ZF7LA of CDGM, the glass material of the fourth lens is H-ZLAF3 of CDGM, the glass material of the fifth lens is H-ZF1 of CDGM, the glass material of the sixth lens is H-ZLAF55C of CDGM, the glass material of the seventh lens is H-ZK11 of CDGM, the glass material of the eighth lens is H-ZF6 of CDGM, the glass material of the ninth lens is H-ZK11 of CDGM, and the glass material of the tenth lens is H-ZF6 of CDGM.

[0027] Preferably, the detection lens optical group further includes an aperture, and the aperture is arranged between the third lens and the fourth lens.

[0028] Preferably, the detection lens optical group includes a first lens, a second lens, a third lens, a first cemented lens, and a sixth lens. The collimator optical group includes a seventh lens, an eighth lens, a ninth lens, and a tenth lens. The target plate optical group includes a target plate glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the composition of the optical system of the utility model.

[0030] Figure 2 It is a schematic diagram of the light rays of the detection lens optical group.

[0031] Figure 3 yes Figure 2 Schematic diagram of the light spot of the detection lens optical group.

[0032] Figure 4 yes Figure 2 Modulation transfer curve diagram of the detection lens optical group shown.

[0033] Figure 5 It is a light diagram of the collimator optical system.

[0034] Figure 6 yes Figure 5 The modulation transfer curve of the collimator optical group is shown.

[0035] Figure 7 It is a schematic diagram of the target glass of the target optical group. Specific implementation methods

[0036] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0037] For any lens, the surface close to the object side is called the object side surface, and the surface close to the image side is called the image side surface.

[0038] The optical system of the utility model is composed of a detection lens optical group, a collimator optical group and a target plate optical group from the observation side to the detection side;

[0039] The detection lens optical group is composed of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 from the object side to the image side;

[0040] The collimator optical group is composed of a seventh lens 7, an eighth lens 8, a ninth lens 9, and a tenth lens 10 from the object side to the image side;

[0041] The target plate optical group adopts target plate glass.

[0042] The first lens 1 has a convex object side surface and a concave image side surface; the second lens 2 has a convex object side surface and a concave image side surface; the third lens 3 has a convex object side surface and a concave image side surface; the fourth lens 4 has a convex object side surface and a convex image side surface; the fifth lens 5 has a concave object side surface and a concave image side surface; the sixth lens 6 has a convex object side surface and a convex image side surface; the seventh lens 7 has a convex object side surface and a concave image side surface; the eighth lens 8 has a concave object side surface and a convex image side surface; the ninth lens 9 has a convex object side surface and a convex image side surface; the tenth lens 10 has a concave object side surface and a convex image side surface; the target plate glass is an etched flat glass.

[0043] The glass material of the first lens 1 is H-LAF2 of CDGM, the glass material of the second lens 2 is H-ZK9B of CDGM, the glass material of the third lens 3 is H-ZF7LA of CDGM, the glass material of the fourth lens 4 is H-ZLAF3 of CDGM, the glass material of the fifth lens 5 is H-ZF1 of CDGM, the glass material of the sixth lens 6 is H-ZLAF55C of CDGM, the glass material of the seventh lens 7 is H-ZK11 of CDGM, the glass material of the eighth lens 8 is H-ZF6 of CDGM, the glass material of the ninth lens 9 is H-ZK11 of CDGM, and the glass material of the tenth lens 10 is H-ZF6 of CDGM. Using glass to manufacture lenses is conducive to reducing production difficulty and production cost. It can be understood by those skilled in the art that using Chengdu Guangming glass to manufacture lenses is only a preferred embodiment. In other embodiments, the lenses can also be made of other materials. For the sake of simplicity, they will not be described one by one here.

[0044] The detection lens optical group also includes an aperture, which is arranged between the third lens 3 and the fourth lens 4.

[0045] The first lens 1 has an object side curvature radius of 31.92mm, a light-clearing diameter of 34mm, an image side curvature radius of 776.2mm, a light-clearing diameter of 34mm, and a center thickness of 6.13mm; the second lens 2 has an object side curvature radius of 16.6mm, a light-clearing diameter of 24mm, an image side curvature radius of 48.41mm, a light-clearing diameter of 24mm, and a center thickness of 5.56mm; the third lens 3 has an object side curvature radius of 359.7mm, a light-clearing diameter of 24mm, and a third lens The image side curvature radius of the mirror 3 is 9.08mm, the light-clearing diameter is 24mm, and the center thickness is 5.14mm; the object side curvature radius of the fourth lens 4 is 48.87mm, the light-clearing diameter is 16mm, the image side curvature radius of the fourth lens 4 is 10mm, the light-clearing diameter is 16mm, and the center thickness is 5.55mm; the object side curvature radius of the fifth lens 5 is 10mm, the light-clearing diameter is 16mm, the image side curvature radius of the fifth lens 5 is 11.72mm, the light-clearing diameter is 16mm, and the center thickness is 3mm; the object side of the sixth lens 6 is The surface curvature radius is 12.16mm, the light aperture is 16mm, the image side curvature radius of the sixth lens 6 is 73.45mm, the light aperture is 16mm, and the center thickness is 5mm; the object side curvature radius of the seventh lens 7 is 305.5mm, the light aperture is 156mm, the image side curvature radius of the seventh lens 7 is 3597mm, the light aperture is 156mm, and the center thickness is 28.2mm; the object side curvature radius of the eighth lens 8 is 1009.3mm, the light aperture is 150mm, and the image side curvature radius of the eighth lens 8 is The object side of the ninth lens 9 has a curvature radius of 337.3 mm, a clear aperture of 126 mm, the image side of the ninth lens 9 has a curvature radius of 448.7 mm, a clear aperture of 126 mm, and a center thickness of 26.7 mm; the object side of the tenth lens 10 has a curvature radius of 251.8 mm, a clear aperture of 112 mm, the image side of the tenth lens 10 has a curvature radius of 721.1 mm, a clear aperture of 112 mm, and a center thickness of 14.8 mm.

[0046] The cross-sectional structure diagram of the detection lens optical group is as follows: Figure 2 As shown, its operating band is 450nm-750nm, the total optical length is 54.5mm, and the focal length is 35mm.

[0047] Figure 3 yes Figure 2 Schematic diagram of the light spot of the detection lens optical group. Figure 3 The circular spot shown is smaller than 6 μm, which is smaller than the single pixel size of 9.7 μm, and meets the use requirements.

[0048] Figure 4 yes Figure 2 The modulation transfer curve of the detection lens optical group is shown. The modulation transfer function is basically better than 0.5 at 50lp / mm.

[0049] The cross-sectional structure diagram of the collimator optical assembly is as follows: Figure 5 As shown, its operating band is 450nm-750nm, the total optical length is 443mm, and the focal length is 500mm.

[0050] Figure 6 yes Figure 5 The modulation transfer curve of the collimator optical group is shown. The modulation transfer function is basically better than 0.5 at 67lp / mm.

[0051] Figure 6 Target plate glass schematic diagram of the target plate optical group. Target plate line data is shown in Table 1.

[0052] Table 1 Target plate line data table

[0053]

[0054]

[0055] The scope of application of the present invention is not limited to the processes, mechanisms, manufactures, material compositions and means of the specific embodiments described in the specification. From the disclosure of the present invention, it will be easily understood by those skilled in the art that the processes, mechanisms, manufactures, material compositions and means that are currently in existence or developed later, which perform substantially the same functions as the present invention or obtain substantially the same results, can be used in accordance with the present invention. Therefore, the claims attached to the present invention are intended to include these processes, mechanisms, manufactures, and materials within their scope of protection.

Claims

1. An integrated optical system for detecting the resolution of optical products, characterized in that: The optical system is composed of a detection lens optical group, a collimator optical group and a target plate optical group from the observation side to the detection side, wherein: The detection lens optical group is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens from the object side to the image side; The collimator optical group is composed of a seventh lens, an eighth lens, a ninth lens, and a tenth lens from the object side to the image side; The target plate optical group is a target plate glass; The object side surface of the first lens is convex, and the image side surface is concave; The object side surface of the second lens is convex, and the image side surface is concave; The object side surface of the third lens is convex, and the image side surface is concave; The object side surface of the fourth lens is convex, and the image side surface is convex; The object side surface of the fifth lens is a concave surface, and the image side surface is a concave surface; The object side surface of the sixth lens is convex, and the image side surface is convex; The object side surface of the seventh lens is convex, and the image side surface is concave; The object side surface of the eighth lens is concave, and the image side surface is convex; The object side surface of the ninth lens is convex, and the image side surface is convex; The object side surface of the tenth lens is concave, and the image side surface is convex; The target plate glass is etched flat glass.

2. The optical system according to claim 1, characterized in that: The fourth lens is cemented with the fifth lens.

3. The optical system according to claim 2, characterized in that: The detection lens optical group also includes an aperture, and the aperture is arranged between the third lens and the fourth lens.

4. The optical system according to claim 1, characterized in that : The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are all spherical lenses.

5. The optical system according to claim 4, characterized in that: The first lens has an object side curvature radius of 31.92 mm and a light-clearance diameter of 34 mm, an image side curvature radius of 776.2 mm and a light-clearance diameter of 34 mm, and a center thickness of 6.13 mm; The radius of curvature of the object side of the second lens is 16.6 mm, the aperture is 24 mm, the radius of curvature of the image side of the second lens is 48.41 mm, the aperture is 24 mm, and the center thickness is 5.56 mm; The object side of the third lens has a curvature radius of 359.7 mm and a light-clearing diameter of 24 mm. The image side of the third lens has a curvature radius of 9.08 mm and a light-clearing diameter of 24 mm, and a center thickness of 5.14 mm. The fourth lens has an object side surface with a curvature radius of 48.87 mm and a light-clearing diameter of 16 mm, an image side surface with a curvature radius of 10 mm and a light-clearing diameter of 16 mm, and a center thickness of 5.55 mm; The fifth lens has an object side surface with a curvature radius of 10 mm and a light-clearing diameter of 16 mm, an image side surface with a curvature radius of 11.72 mm and a light-clearing diameter of 16 mm, and a center thickness of 3 mm; The radius of curvature of the object side of the sixth lens is 12.16 mm, the aperture of light is 16 mm, the radius of curvature of the image side of the sixth lens is 73.45 mm, the aperture of light is 16 mm, and the center thickness is 5 mm.

6. The optical system according to claim 4, characterized in that: The seventh lens has an object side curvature radius of 305.5 mm and a light-clearing diameter of 156 mm. The seventh lens has an image side curvature radius of 3597 mm and a light-clearing diameter of 156 mm. The center thickness is 28.2 mm. The eighth lens has an object side surface with a curvature radius of 1009.3 mm and a light-clearing diameter of 150 mm, an image side surface with a curvature radius of 1312.2 mm and a light-clearing diameter of 150 mm, and a center thickness of 18.3 mm; The ninth lens has an object side surface with a curvature radius of 337.3 mm and a light-clearing diameter of 126 mm, an image side surface with a curvature radius of 448.7 mm and a light-clearing diameter of 126 mm, and a center thickness of 26.7 mm; The object side surface of the tenth lens has a curvature radius of 251.8 mm and a light-clearing aperture of 112 mm. The image side surface of the tenth lens has a curvature radius of 721.1 mm and a light-clearing aperture of 112 mm. The center thickness is 14.8 mm.

7. The optical system according to claim 5, characterized in that: The glass material of the first lens is H-LAF2 of CDGM, the glass material of the second lens is H-ZK9B of CDGM, the glass material of the third lens is H-ZF7LA of CDGM, the glass material of the fourth lens is H-ZLAF3 of CDGM, the glass material of the fifth lens is H-ZF1 of CDGM, and the glass material of the sixth lens is H-ZLAF55C of CDGM.

8. The optical system according to claim 6, characterized in that: The glass material of the seventh lens is H-ZK11 of CDGM, the glass material of the eighth lens is H-ZF6 of CDGM, the glass material of the ninth lens is H-ZK11 of CDGM, and the glass material of the tenth lens is H-ZF6 of CDGM.

9. The optical system according to any one of claims 1 to 8, characterized in that: The working band of the detection lens optical group is 450nm-750nm, the total optical length is 54.5mm, and the focal length is 35mm.

10. The optical system according to any one of claims 1 to 8, characterized in that: The working wavelength band of the collimator optical group is 450nm-750nm, the total optical length is 443mm, and the focal length is 500mm.

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