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Optical scanner with multiple wave length light source

A multi-wavelength light source and optical scanning technology, which is applied in the direction of optics, optical components, printing devices, etc., can solve the problems that the light spots cannot be irradiated at the same time

Inactive Publication Date: 2004-09-29
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, this optical scanning device is used for optical scanning of a single-wavelength light source in a laser printer, and it cannot irradiate light spots corresponding to different wavelengths to the same scanning light spot position at the same time

Method used

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  • Optical scanner with multiple wave length light source
  • Optical scanner with multiple wave length light source
  • Optical scanner with multiple wave length light source

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Embodiment Construction

[0041] The optical scanning device of the multi-wavelength light source developed according to the present invention can perform optical scanning in three different ways: (1) three beams corresponding to different wavelengths are sequentially scanned at the same position (2) three corresponding to different The beams of different wavelengths are emitted at the same time, and the combined beam passes through an f-θ lens, the scanning positions of the three different light spots are different (3) The three beams corresponding to different wavelengths are emitted at the same time, and the combined beam passes through After f-theta lenses corresponding to different wavelengths, the three light spots can be scanned at the same position.

[0042] In the first embodiment of the present invention, three light beams corresponding to different wavelengths can be sequentially scanned at the same position. Please refer to the schematic diagram of the structure. image 3 shown. The optical...

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Abstract

The optical scanner with multiple wavelength light source includes several light sources of different wavelengths. The light beams the light sources emit are made to pass through collimating lens, cylindrical lens and light combinator to form one single light beam or several parallel light beams; and the light beam(s) is further reflected by the reflector and transmitted by one or several lenses on one rotary unit. The reflector and the subsequent lens(es) may be in different arrangement modes, so that three kinds of scanning modes may be obtained: the mode I with light points of different wavelengths scanning the same position successively; the mode II with light points of different wavelengths scanning different positions; and the mode III with light points of different wavelengths scanning the same position simultaneously.

Description

technical field [0001] The present invention relates to an optical scanning device with a multi-wavelength light source, which can be applied to the exposure light source of a photo printer. Background technique [0002] The multi-wavelength optical scanning device developed so far is mainly used in laser optical printers. Please refer to FIG. 1 for a schematic diagram of its structure. , 23 , the light combiner 30 , the beam shaping lens group 40 , the rotating polygon mirror 50 and the f-θ lens 60 . [0003] The three laser light sources 11, 12, 13 are used to generate light beams with three different wavelengths, and these three light beams are adjusted by the modulators 21, 22, 23 corresponding to the three laser light sources 11, 12, 13, The intensity of three different light source outputs and their on / off (ON / OFF) states can be controlled. Then, after these beams pass through the optical combiner 30, the three beams can be combined into a single beam output. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G03B27/10
Inventor 刘贞豪
Owner IND TECH RES INST