Optical scanner

Details Optical scanner Optical scanner

1999-12-03

2000-10-24

Phan, James

Optical: systems and elements

Deflection using a moving element

359212, 359216, 347245, 347263, G02B 2608

Patent

active

061376140

ABSTRACT:
An optical scanner can inhibit the quantity of thermal deformation and the variation of an optical path of an optical box attached to the frame of an image information device. In the scanner, a fixed part fixed to the frame of an image formation device is provided in a part of which the rigidity is relatively low apart from the corner in the vicinity of the vertex of the outside shape of the bottom of which the rigidity is relatively high in an optical box. Hereby, deformation of each part (in the vicinity of the corner and the side) by stress caused in the optical box due to a difference in the coefficient of linear expansion between the frame and the optical box as temperature in the image formation device varies can be uniformed, and warp like adrum that is apart to which an optical component is attached, that is, the bottom is tilted, which is the worst mode of deformation out of the variation of an optical path, can be reduced. Therefore, the variation of the inclination of the optical component held in the optical box based upon the optical axis is inhibited and the variation of the optical path is prevented.

REFERENCES:
patent: 5299051 (1994-03-01), Hirano

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