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Method for processing Fery prism

A technology of a Ferri prism and a processing method, which is applied in the field of optical device manufacturing, can solve the problems affecting the imaging quality of an optical system, difficult system assembly and adjustment, etc., and achieves the effects of saving materials, good stability of the optical axis angle error, and easy implementation.

Inactive Publication Date: 2013-07-24
苏州七色光智能科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The optical axis angle parameter of the Ferry prism is a very important parameter in its structural parameters. If the optical axis angle is not processed correctly, it will not only seriously affect the imaging quality of the optical system, but also make the installation and adjustment of the system very difficult.

Method used

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  • Method for processing Fery prism

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Embodiment 1

[0024] Embodiment one: a kind of processing method of curved prism Ferry prism, comprises the following steps:

[0025] (1) According to the initial structure of the curved prism Ferry prism that needs to be processed, calculate the initial structure, see figure 1 As shown, its initial structure is processed into a cylinder, the diameter of which is equal to the diameter of the first curved surface of the Ferry prism, and the two end faces are circular planes perpendicular to the axis of the cylinder; the processed curved prism Ferry The initial structure of the prism, the initial structure is a cylinder, and the length of the cylinder is slightly greater than the maximum length of the workpiece on the optical axis of the first curved surface of the Ferry prism;

[0026] (2) Process the wedge-shaped cylindrical structure of the curved prism Ferry prism, see figure 2 As shown, taking one of the circular end faces 1 of the initial structure cylinder as the datum plane, a wedge...

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Abstract

The invention discloses a method for processing a Fery prism. The method comprises the steps of: (1) processing an initial structure cylinder of a curved prism Fery prism, wherein the diameter is equal to the diameter of a first curved surface of the Fery prism, the two end faces are planes vertical to the axis line of the cylinder, and the length of the cylinder is equal to the maximum length size of a workpiece in the axial direction of an optical axis of the first curved surface of the Fery prism plus a cutting removal amount; (2) processing an oval plane on the cylinder by cutting to obtain a wedge cylinder structure of the Fery prism, wherein the wedge cylinder structure spatially contains the Fery prism to be processed; (3) processing the first curved surface on the circular end face of the cylinder; and (4) processing a second curved surface on the oval plane. The method provided by the invention has the advantages of simple process, low cost and easiness in control of optical axis included angle precision, and is suitable for single part processing or small batch processing.

Description

technical field [0001] The invention belongs to the technical field of optical device manufacturing, and relates to a processing method for a curved prism, in particular to a single-piece processing method for a Ferry prism. Background technique [0002] In order to make the spectrograph obtain a "pure" spectrum, Ferry proposed to replace the flat prism with a curved prism in 1910. The results showed that this improvement has many advantages that the flat prism cannot match. After more than 100 years of development, the Ferry prism has the characteristics of small absorption loss, large astigmatism, compact structure, large field of view, and light weight. , aerospace and other fields have broad application prospects. In view of the many uses of curved prisms, Ferry prisms, some domestic institutions have carried out a lot of research work on the processing of curved prisms. [0003] For example, Chinese invention patent application CN 102139376A discloses a method for pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B1/00
Inventor 陈曦郭培基
Owner 苏州七色光智能科技有限公司
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