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Processing control method of axial symmetry free-form surface of aspheric surface optical elements

An optical element, axisymmetric technology, applied in the field of aspherical optical elements, can solve the problems of difficult processing and high cost, and achieve the effects of convenient operation, simple installation and high processing accuracy

Inactive Publication Date: 2009-08-19
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For compression molding technology, although optical elements with relatively high precision can be produced, the surface of the blank to be pressed must be kept very smooth and clean, and it must be in a suitable geometric shape, and the requirements for the mold are strict, so it is difficult to processing, high cost

Method used

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  • Processing control method of axial symmetry free-form surface of aspheric surface optical elements
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  • Processing control method of axial symmetry free-form surface of aspheric surface optical elements

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0025] Figure 1~3 The codes of the main components in:

[0026] 1 laser interferometer, 2 micro-feed mechanism, 3 grating scale, 4 tool holder, 5 worktable, 6 turning tool, 7 workpiece, 8 rotating platform, 9 spindle, 10 chute, 11 rotary encoder.

[0027] see figure 1 with 2 , the workpiece 7 to be processed is fixed on the rotary platform 8, and the rotary platform 8 is connected with the main shaft 9 to perform high-speed rotary motion. The laser interferometer 1 and the tool rest 4 are all installed on the workbench 5, and the tool rest 4 moves up and down along with the workbench 5 during the processing (such as figure 1 indicated by the double-headed arrow in the vertical direction). Have chute 10 on the workbench 5. The knife rest 4 is located in the chute 10 , and the knife rest 4 can slide along the chute 10 , and a rotary encoder 11 is i...

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Abstract

The invention belongs to a processing control method for axial symmetrical free curved surfaces of a non-spherical optical element, relates to a non-spherical optical element, and provides a processing control method for axial symmetrical free curved surfaces of a non-spherical optical element and capable of improving the surface precision of the free curved surfaces and a device thereof. The device is provided with a workbench, a laser interferometer, a micro feeding mechanism, a grating scale, a tool post, a rotary encoder, a turning tool, a rotary platform, a main shaft and a controller. The method comprises the following steps: connecting the turning tool and the grating scale, mounting the rotary encoder and the laser interferometer on the workbench, and positioning the turning tool by adjusting and controlling the grating scale and the rotary encoder; calculating control models at a feeding speed; setting processing parameters and carrying out numerical control programming to generate a numerical control processing code and a compensation processing program of each shaft; processing the optical element according to the numerical control processing code; using the interferometer to measure work pieces on line, processing and fitting data for measurement results, and finishing processing if the surface precision requirement is accorded; and returning to the compensation processing program if the surface precision requirement is not accorded.

Description

technical field [0001] The invention relates to an aspheric optical element, in particular to a processing control method and device for an axisymmetric free-form surface of an aspheric optical element. Background technique [0002] In modern optics, aspheric optical element is a very important optical element, which is widely used in many fields. Severe spherical aberration inevitably exists on the refraction or reflection surface formed by the spherical surface, that is to say, after the parallel light rays are reflected or refracted by the spherical surface, the distances between the focus of the light rays at different distances from the optical axis and the center point of the mirror surface are different. . The actual focal length of light rays farther from the optical axis is shorter, and the actual focal length of light rays closer to the optical axis is longer. This phenomenon is the origin of the name spherical aberration. In order to overcome the problem of sphe...

Claims

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Application Information

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IPC IPC(8): B23B1/00
Inventor 郭隐彪杨清全李芊芊
Owner XIAMEN UNIV
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