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Fixing structure of optical element

A technology of optical elements and fixed structures, which is applied in the field of fixed structures of optical elements, and can solve the problems of optical element position deviation, precision drop, optical axis deviation of optical head device, etc.

Inactive Publication Date: 2008-08-27
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the position of the optical element will deviate, which in turn will cause the optical axis of the optical head device to deviate, and there is a problem that the accuracy will decrease.

Method used

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  • Fixing structure of optical element
  • Fixing structure of optical element
  • Fixing structure of optical element

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Experimental program
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Embodiment Construction

[0053] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0054] (the whole frame)

[0055] FIG. 1 is a schematic configuration diagram of an optical system of an optical head device showing a fixing structure of an optical element according to the present invention. Fig. 2 is a bottom view of the optical head device.

[0056]The optical head device 1 of the present embodiment uses the first laser light (infrared light) with a wavelength of 650nm band and the second laser light (outside infrared light) with a wavelength of 780nm band as the laser light source 2, which can be used for DVD-type discs and CD-type discs. A dual-wavelength optical head device for recording and reproducing on a disc. Therefore, the laser light source 2 used in the optical head device 1 is a dual laser light source including an AIGaInP laser diode emitting a first laser beam and an AIGaAs laser diode emitting a second laser beam.

[0057] As sh...

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PUM

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Abstract

The invention provides a fixed structure of an optical component which is not easy to produce optical axis deviation and is provided with high reliability; a fixed structure with a half mirror (41) leant against a reference face (81P, 82P) forming on a device frame (6) and is fixed by an adhesive, the fixed structure is configured with: a first adhering part (91A, 91B) located at the reference face (81P, 82P) side for coating a first adhesive (91a, 91b) crossover the half mirror (41) and the device frame (6); and a second adhering part (92A, 92B) coating a second adhesive (92a1, 92a3, 92b1, 92b2) at a position which is capable of preventing the first adhesive (91a, 91b) off the reference face (81P, 82P).

Description

technical field [0001] The invention relates to a fixing structure of an optical element. Background technique [0002] For example, the optical head device has an optical system that guides the outgoing light emitted from the laser light source to the objective lens to converge it on the target position on the recording surface of optical recording discs such as CDs and DVDs, and will be recorded by the light. The return light reflected by the disk is guided to the light receiving element. Various optical elements constituting the optical system are fixed to predetermined positions on fixed parts such as device frames with adhesives. [0003] For example, in the optical head device and its manufacturing method of Patent Document 1, a half mirror (half mirror) as an optical element is fixed to a device made of resin using an epoxy resin adhesive as a thermosetting adhesive. When on the frame, first use the compression spring to make the semi-transparent mirror close to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/00G11B7/08G11B7/135G11B7/22
CPCG02B7/182G11B2007/0006G02B27/646G11B7/1275G11B7/22
Inventor 和出达贵春日孝文
Owner SANKYO SEIKI MFG CO LTD