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Method for manufacturing optical element, and optical element

A technology of optical components and manufacturing methods, which is applied in the direction of optical components, optics, manufacturing tools, etc., can solve the problems of optical components coming out, the outer diameter cannot be formed with high precision, etc., and achieve the effect of preventing harm

Inactive Publication Date: 2017-08-18
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there will be the following problems: the outer diameter cannot be formed with high precision due to the unevenness of the outer peripheral surface; Protrusion from peripheral fine adjustment part

Method used

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  • Method for manufacturing optical element, and optical element
  • Method for manufacturing optical element, and optical element
  • Method for manufacturing optical element, and optical element

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0044] figure 1 It is a sectional view showing the molded state of the optical element 100 in the first embodiment of the present invention.

[0045] figure 1 The mold set 10 shown has an upper mold 11 , a lower mold 12 and a main mold 13 .

[0046] The upper mold 11 has a substantially cylindrical shape, and has a convex molding surface 11a formed on the bottom surface.

[0047] The lower die 12 has a substantially cylindrical shape, and has a planar molding surface 12a formed on its upper surface.

[0048] In addition, the upper die 11 and the lower die 12 are an example of a pair of forming dies, and the above-mentioned shapes are merely examples.

[0049] The main mold 13 is cylindrical and is located around the upper mold 11 and the lower mold 12 . An inner peripheral molding surface 13 a is formed on the inner periphery of the master mold 13 .

[0050] The upper mold 11 is pressed downward by a pressure means (not shown), slides in the main mold 13 , and pressuriz...

no. 2 Embodiment approach

[0075] This embodiment differs from the first embodiment in that the position of the scattering region 100 g is inside the optical element 100 , and the others are the same. Therefore, detailed description is omitted.

[0076] Figure 3A and Figure 3B It is a front view and a right side view for explaining creation of the scattering region 100g in the second embodiment.

[0077] In this embodiment, if Figure 3A and Figure 3B As shown, the optical element 100 is also held by the pair of rotation holding parts 21 and 22, and is rotated by the rotation of these rotation holding parts 21 and 22 (arrow D2). In addition, in this embodiment, the laser irradiation part 23 is also free to move in the thickness direction (arrow D1 ) of the optical element 100 .

[0078] In the present embodiment, the laser irradiation unit 23 irradiates the laser light L to the inside of the optical element 100 outside the effective diameter 100 a. Thereby, scattering regions 100g are created i...

no. 3 Embodiment approach

[0088] In the present embodiment, the laser beam L is irradiated into the optical element 100 from the outer peripheral side of the optical element 100 (outer peripheral molding surface 100d side or free surface 100e side). In addition, the scattering regions 100h-1, 100h-2, 100h-2, 100h-3. This embodiment differs from the first embodiment and the second embodiment in these points, and the others are the same. Therefore, detailed description is omitted.

[0089] Figure 4A and Figure 4B It is a front view and a right side view for explaining creation of the scattering regions 100h-1, 100h-2, and 100h-3 in the third embodiment.

[0090] In this embodiment, if Figure 4A and Figure 4B As shown, the optical element 100 is also held by the pair of rotation holding parts 21 and 22, and is rotated by the rotation of these rotation holding parts 21 and 22 (arrow D2). In addition, in this embodiment, the laser irradiation part 23 is also free to move in the thickness directio...

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Abstract

A method for manufacturing an optical element and an optical element are provided, in which the negative effects of stray light can be eliminated in a simple and reliable manner while forming the outer dimension of the optical element with high accuracy. The method for manufacturing an optical element comprises: a molding step of softening a molding material by heating to mold the optical element 100; and a scattering region generation step of generating a scattering region 100f outside an effective diameter 100a of the optical element 100 formed by the molding while substantially maintaining the outer dimension (outer diameter E) of the optical element 100.

Description

[0001] 【Technical field】 [0002] The present invention relates to a manufacturing method of an optical element for manufacturing an optical element and an optical element. [0003] 【Background technique】 [0004] Conventionally, a method of roughening the outer peripheral surface of a lens by outer diameter centering edging by grinding has been performed. Accordingly, when a part of the light incident on the lens becomes stray light and strikes the outer peripheral surface, ghosting or flare is prevented by diffuse reflection on the rough surface. [0005] Figure 6A It is a cross-sectional view showing a lens 200 whose outer peripheral surface is a ground surface 200a. [0006] Figure 6B is a cross-sectional view showing a lens 300 whose outer peripheral surface is a mirror surface 300a. [0007] Such as Figure 6A As shown, when the outer peripheral surface of the lens 200 is the grinding surface 200a, the stray light L10 is scattered by diffuse reflection on the grindin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B11/08G02B3/00G02B5/00
CPCC03B2215/46C03B2215/72C03C23/0025G02B5/021G02B5/0268G02B27/0018B23K26/53C03B11/05
Inventor 市之濑淳
Owner OLYMPUS CORP