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Processing method of aspherical optical element of optical glass and silicon monocrystal

A technology of optical glass and optical components, which is applied in the direction of optical surface grinders, metal processing equipment, manufacturing tools, etc., can solve the problems of long component cycle, high cost, difficult to guarantee accuracy, etc., and achieve the goal of improving production efficiency, cost and quality Effect

Inactive Publication Date: 2006-10-18
云南北方光学电子集团有限公司
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  • Application Information

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Problems solved by technology

[0002] Through the search, no technical reports identical or similar to this one were found. At present, the processing of optical glass and silicon single crystal aspheric optical elements mainly adopts traditional polishing technology. The main process flow Under normal circumstances, only 2 aspheric optical elements are processed. For high-order aspheric surfaces (more than 10 times), it can barely be processed, but the manufactured elements have the defects of long cycle time, high cost, and difficult to guarantee accuracy.

Method used

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  • Processing method of aspherical optical element of optical glass and silicon monocrystal
  • Processing method of aspherical optical element of optical glass and silicon monocrystal
  • Processing method of aspherical optical element of optical glass and silicon monocrystal

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Embodiment 1

[0027] Example 1, processing aspherical optical elements twice, such as Figure 5 As shown, surface A is aspherical, material: optical glass material or silicon single crystal material, Φ=17 mm, aspherical vertex radius R 0 = 10.085 mm, δ = 5 mm, 2nd degree aspheric equation: Y = C X 2 / 1 + 1 - ( 1 + K ) C 2 X 2 , Among them, Y represents the vertical distance from any point on the aspheric surface to the vertex of the aspheric surface, which is called arc height, X is the data of any point on the effective radius of the aspheric surface Φ / 2=8.5 mm, K is the surface shape coefficient, K=-1.490242, C= 1 / R 0 = 0.0991571641,

[0028] A. Blanking, according to...

Embodiment 2

[0036] Example 2: Process 10 aspherical optical elements, such as Image 6 As shown, A is an aspheric surface, material: optical glass or silicon single crystal, Φ=60 mm, R=92.04 mm, δ 1 = 12.33 mm, δ 2 = 10.76 mm, aspheric effective radius Φ / 2 = 30 mm, aspheric vertex radius R 0 = 215.985 mm. Aspheric equation: Y = C X 2 / 1 + 1 - ( 1 + K ) C 2 X 2 + a 2 X 2 + a 3 X 3 + a 4 X 4 + . . ...

Embodiment 3

[0045] Embodiment 3, processing 15 aspherical optical elements, such as Figure 7 As shown, A is an aspheric surface, material: optical glass or silicon single crystal material, Φ=82 mm, δ 1 = 4.37 mm, δ 2 = 3.98 mm, R = 64.86 mm, R 0 = 30.70475 mm, 15th degree aspheric equation:

[0046] Y = C X 2 / 1 + [ 1 - ( 1 + K ) C 2 X 2 + a 2 X 2 + a 3 X 3 + a 4 X 4 + . . . . . ...

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Abstract

The present invention discloses optical element processing technology, and is especially processing method of aspherical optical element of optical glass and silicon monocrystal. The present invention features that optical glass and silicon monocrystal is processed in computerized numerically controlled grinder and computerized numerically controlled polishing machine through a new technological process including the steps of fine grinding of aspherical, polishing of aspherical, trim polishing of aspherical, profile detection, etc. The present invention is superior to traditional method, and has low production cost, stable quality and high efficiency.

Description

1. Technical field [0001] The invention belongs to a processing technology of optical elements, and is mainly used for the production of common optical glass and aspherical optical elements of silicon single crystal material. 2. Background technology [0002] Through the search, no reports of the same or similar technology have been found. At present, the processing of optical glass and silicon single crystal material aspherical optical elements mainly adopts traditional polishing technology. The main process flow In general, only 2-order aspheric optical elements are processed, and high-order aspheric surfaces (more than 10 times) can barely be processed, but the produced elements have the defects of long cycle, high cost, and difficult to guarantee accuracy. 3. Content of the Invention [0003] The main technical task and purpose of the present invention are: to find a new method according to the shortcomings of the traditional process for processing aspherical optical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B13/00
Inventor 张有彩罗刚段有辉
Owner 云南北方光学电子集团有限公司
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