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Optical sensor device

A technology of optical sensing and sliding frame, which is used in the configuration/installation of optical discs, heads, recording/reproducing by optical methods, etc.

Inactive Publication Date: 2004-04-28
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] For applications that do not require a small light sensing device, it is possible to use the above-mentioned sliding frame with a thicker thickness in whole or in part, but, in this case, especially when the installation conditions of the light sensing device are foreseen In the case of strong impact, you will eventually encounter the same problem as the thinner slide frame

Method used

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  • Optical sensor device
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Examples

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Embodiment Construction

[0036] figure 1It is a perspective view of the photosensor device 20 according to the first embodiment of the present invention. The light sensing device 20 is a slide frame 21 formed by punching metal plate, has a biaxial operating mechanism 22 fixedly mounted on the objective lens 22a on the slide frame 21, sends laser light to the objective lens 22a through a collimator lens 23 and a reflector 24, The light-emitting and light-receiving element 25 which receives the reflected light of the objective lens 22a, and the holder 26 which supports the light-emitting and light-receiving element 25 are constituted.

[0037] The sliding frame 21 consists of a substantially rectangular bottom plate portion 21c, a part of which is a curved portion 21a and a protruding portion 21b, and a first side wall portion 21d and a second side wall portion 21e that are arranged opposite to each other along the lengthwise two edges of the bottom plate portion 21c. , and a third side wall portion 2...

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PUM

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Abstract

To provide an optical pickup device which obviates an increase in a cost, has a good assembly characteristic and is not deteriorated in performance against impact during the transportation of an optical disk device even if a carriage composed of thin parts, such as a sheet metal carriage in particular, is used. A main shaft 27 is inserted into round holes 21i and 21i and a first notched groove 21g is slidably supported by a sub-shaft 28, by which the carriage 21 is slidably supported. The front end of a second side wall part 21e is provided with a second notched groove 21h and a spacing is disposed between this second notched groove 21h and the sub-shaft 28. As a result, the carriage 21 is so regulated as not to be deformed more than this spacing.

Description

technical field [0001] The present invention relates to an optical sensor device used by an optical disc drive to record or reproduce optical disc information. Background technique [0002] The optical sensing device refers to a device that is installed on the optical disc drive, can move freely in the radial direction of the optical disc, injects laser light onto the information recording surface of the optical disc, records information on the information recording surface, and reproduces the recorded information. [0003] Shown in Figure 11 is the existing optical sensor device 50, which is composed of a sliding frame 51 mounted on the optical disc drive (not shown in the figure), and a biaxial operating mechanism 52, which is connected and fixed on the sliding frame at an angle of 45 degrees. The reflection mirror 53 on the bottom plate portion 51 a of the frame 51 , the light emitting and light receiving elements 55 held on the bracket 54 , and the case 56 are constitute...

Claims

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Application Information

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IPC IPC(8): G11B21/02G11B7/085G11B7/09
CPCG11B7/085G11B7/09G11B2220/2537
Inventor 田中正宣镰田重幸
Owner ALPS ALPINE CO LTD