Processing method of germanium single crystal non spherical surface optical element

A technology of optical components and processing methods, applied in metal processing equipment, manufacturing tools, turning equipment, etc., can solve the problems of high cost, difficult to guarantee accuracy, and long component cycle.

Inactive Publication Date: 2006-06-14
云南北方光学电子集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Under normal circumstances, only two germanium single-crystal aspheric optical elements are processed. For high-order aspheric surfaces (more than 10 times), it can barely be processed, but the components produced have long cycle times, high costs, and high precision. Defects that are difficult to guarantee

Method used

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  • Processing method of germanium single crystal non spherical surface optical element
  • Processing method of germanium single crystal non spherical surface optical element
  • Processing method of germanium single crystal non spherical surface optical element

Examples

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Embodiment 2

[0040] Embodiment two: process 10 times of aspheric elements, such as Figure 4 As shown, material: germanium single crystal, aspheric vertex radius R 0 =82.8769 mm, outer diameter Φ 外 =94±0.02 mm, effective radius of aspheric surface=Φ 外 / 2=94 / 2=47 mm, inner diameter Φ=87 mm, thickness δ=8.5±0.01 mm, aspheric equation: Y = C X 2 / 1 + [ 1 - ( 1 + K ) C 2 X 2 ] + A X 4 + B X 6 + D X 8 + E X 10 , Among them, Y represents ...

Embodiment 3

[0048] Embodiment three, process 15 times of aspheric elements, such as Figure 5 As shown, material: germanium single crystal, aspheric vertex radius R 0 =182.096, outer diameter Φ 外 =108±0.02 mm, effective radius of aspheric surface=Φ 外 / 2=108 / 2=54 mm, inner diameter Φ=96 mm, thickness δ=11.5±0.01 mm, aspheric equation: Y = CX 2 / 1 + [ 1 - ( 1 + K ) C 2 X 2 ] + A X 3 + BX 5 + CX 7 + EX 9 + FX 11 + GX ...

Embodiment 4

[0056] Embodiment four, process 20 times of aspherical elements, such as Image 6 As shown, material: germanium single crystal, where A surface is aspherical, R 0 =396.64 mm, outer diameter Φ=26±0.02 mm, effective radius of aspheric surface=Φ / 2=26 / 2=13 mm, central thickness δ=3±0.01 mm, 20th degree aspheric surface equation: Y = CX 2 / 1 + [ 1 - ( 1 + K ) C 2 X 2 ] + AX 4 + BX 6 + DX 8 . . + EX 10 + FX ...

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Abstract

A technology for machining the non-spherical optical element with monocrystal of Ge features use of numerally controlled lathe and arc diamond cutter. Its technological steps include blanking, coarse grinding, designing and manufacturing attractive fixture, semi-fine machining, fine machining, testing surface type, and trimming. It has high productivity.

Description

1. Technical field [0001] The invention belongs to a processing technology of an optical element, and is mainly used for making an infrared optical material—germanium single crystal aspheric optical element. 2. Background technology [0002] Through the search, no technical reports identical or similar to this one were found. At present, the processing of germanium single crystal aspheric optical elements mainly adopts traditional polishing technology, and its main process flow is as follows: [0003] [0004] Under normal circumstances, only two germanium single-crystal aspheric optical elements are processed. For high-order aspheric surfaces (more than 10 times), it can barely be processed, but the components produced have long cycle times, high costs, and high precision. Defects that are difficult to warrant. [0005] The main technical task of the present invention is: to find a new method to process germanium single crystal aspheric optical elements according to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B5/00B23B31/08
Inventor 木锐赵明张有彩张志文赵承波
Owner 云南北方光学电子集团有限公司
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