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Method of manufacturing apodizer, and optical module

Inactive Publication Date: 2014-01-01
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in an apodizer manufactured by bonding a plano-concave lens using light-absorbing glass and a convex-planar lens using transparent glass, it is difficult to reduce the size and weight of the imaging optical system because the filter is thick.
In addition, in an apodizer produced by vacuum vapor-depositing a light-absorbing material through a conical mask member, there is a problem that it is difficult to control the transmittance distribution with high precision, and it is difficult to achieve the required optical density. Very long time, less efficient and costly to manufacture

Method used

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  • Method of manufacturing apodizer, and optical module
  • Method of manufacturing apodizer, and optical module
  • Method of manufacturing apodizer, and optical module

Examples

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Embodiment Construction

[0029] Embodiments will be described in detail below with reference to the drawings.

[0030] figure 1 is an explanatory diagram schematically showing an optical module 10 according to an embodiment of the present invention, figure 2 is a cross-sectional view schematically showing the apodizer 20 assembled in the optical module 10, image 3 is a plan view showing the apodizer 20 . In addition, in figure 1 , 2 The transmission direction of light is from left to right. figure 1 Among them, XYZ represents three directions orthogonal to each other, and the Z direction represents the transmission direction of light.

[0031] Optical module 10 from figure 1 From the middle left, an optical lens (incident-side lens) 11 , an apodizer 20 , an optical lens (exit-side lens) 12 , optical lenses 13 , 14 , 15 , and 16 , and an imaging element 17 are provided. The optical module 10 has a function of forming an incident image on the imaging element 17 .

[0032] The apodizer 20 i...

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Abstract

An optical module comprises an apodizer includes a black resin layer having a concavity the diameter of which gradually changes in a direction light passes through the apodizer, and, provided in the concavity, a transparent resin layer having the same refractive index as the black resin layer, the black resin layer and the transparent resin layer having a total thickness of 0.001 to 0.10 mm, an input lens opposed to the black resin layer of the apodizer and an output lens opposed to the transparent resin layer of the apodizer.

Description

[0001] CITATION OF RELATED APPLICATIONS: This application is based on and enjoys priority from prior Japanese Patent Application No. 2012-130955 filed on June 8, 2012, the entire contents of which are hereby incorporated by reference. technical field [0002] Embodiments of the present invention relate to an apodizer manufacturing method for manufacturing an apodizer used in optical devices and the like, and an optical module using the apodizer. Background technique [0003] Optical modules incorporated in cameras for mobile phones are required to be thinner. In addition, in recent years, multi-pixels have been developed in response to the demand for higher image quality, and the depth of field (Depth of field) has become shallower as the pixel size has been reduced. Therefore, an optical mask is used to deepen the depth of field. [0004] As one of the optical masks, a technique called apodization is known, in which a filter with a high transmittance at the center and a de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/00G02B13/00
CPCG02B27/58G02B13/0045G02B3/00B29D11/0074B29D11/00634G03B17/02G02B5/20
Inventor 井之本实今野有作冈田直忠小笠原隆行岩田勝雄
Owner KK TOSHIBA