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Optical element and optical scanning device

A technology for optical components and flat plate parts, which is applied in the directions of optical components, optics, installation, etc., and can solve the problems of deterioration of optical characteristics of optical equipment, poor modification, and distortion of glass plates.

Inactive Publication Date: 2021-04-13
NIPPON DENSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the difference in the modified example due to the difference in the linear expansion coefficient between the movable part and the glass plate, there is a possibility that distortion may occur on the glass plate, and the optical characteristics of the optical device may deteriorate.

Method used

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  • Optical element and optical scanning device
  • Optical element and optical scanning device
  • Optical element and optical scanning device

Examples

Experimental program
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Embodiment Construction

[0026] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification, the central axis Cx, the 1st axis C1, and the 2nd axis C2 are defined as follows. exist figure 1 In the illustrated optical scanning device 100 , the central axis Cx extends vertically. In addition, the first axis C1 and the second axis C2 are perpendicular to each other. The central axis Cx intersects each of the first axis C1 and the second axis C2 at a portion where the first axis C1 and the second axis C2 intersect. The second axis C2 is always orthogonal to the central axis Cx. In addition, the first axis C1 is perpendicular to the central axis Cx when the optical element 1 is stopped. In addition, to figure 1 The illustrated optical scanning device 100 is defined up and down with reference to a central axis Cx. In addition, the above-mentioned titles of directions are used for description, and do not limi...

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PUM

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Abstract

The invention provides an optical element and an optical scanning device. The optical element includes a plate portion including a reflecting surface on an upper surface in a direction of a vertically extending central axis, a shaft that extends in a direction of a first axis intersecting with the central axis and is fixed to a lower surface of the plate portion, a magnet below the shaft in the direction of the central axis, and plates that fix the plate portion and the shaft, the plate portion including a protruding portion that extends downward in the direction of central axis from a lower surface, the plate including a shaft fixing portion to which the shaft is fixed and a plate portion fixing portion to which the plate portion is fixed, the plate portion fixing portion being fixed to the protruding portion.

Description

technical field [0001] The present invention relates to an optical element and an optical scanning device. Background technique [0002] Conventionally, an optical device including an optical unit having an incident surface on which light enters, a movable unit supporting the optical unit, a shaft unit supporting the movable unit so as to be swingable about a swing axis, and an actuator for swinging the movable unit is known. In this optical device, a glass plate that refracts and transmits light is directly bonded to the movable part (Japanese Patent Application Laid-Open No. 2016-071233). [0003] Existing patent documents [0004] Patent Document 1: Japanese Patent Laid-Open No. 2016-071233 [0005] In the above optical device, the movable portion and the glass plate are formed of different materials. Therefore, due to the difference in the modified example due to the difference in the linear expansion coefficient between the movable part and the glass plate, distortio...

Claims

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Application Information

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IPC IPC(8): G02B7/182G02B26/10
CPCG02B7/1821G02B26/105G02B7/1828G02B26/0816G02B26/101G02B7/182G02B26/10
Inventor 井口卓郎
Owner NIPPON DENSAN CORP