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	Semiconductor laser pen
	NAKAMURA SHIGERU; TSUNODA YOSHITO; MAEDA TAKESHI; WATANABE MASATERU; KAMISADA TOSHIMASA
	1985-10-17
著作权人	株式会社日立製作所
专利号	JP1985205420A
国家	日本
文献子类	发明申请
其他题名	Semiconductor laser pen
英文摘要	PURPOSE:To compensate mutually variation in angle of reflection with wavelength and hold an angle of projection constant, and also compensate a position shift with temperature by using plural prisms made of different materials, and composing a housing of plural members made of different materials. CONSTITUTION:A coupling lens 12 for collimating a beam from a semiconductor laser 11 into a parallel beam is composed of a combination lens formed by combining various kinds of convex lens and concave lens of different materials in order to eliminate chromatic abberation. A beam width conversion optical system 13 which converts an elliptic parallel beam from the coupling lens 12 into a parallel beam with a circular or pseudo-circular distribution consists of a compound prisms formed by coupling at least two kinds of prism made of a material differing in the wavelength dispersion of a refractive index. The housing 14 consists of the 1st cylinder 14A which supports the semiconductor lens 11 fixedly and the 2nd cylinder 14B which supports the compound prism 13 fixedly, and they are made of materials having different coefficients of thermal expansion.
公开日期	1985-10-17
申请日期	1984-03-30
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/59355]
专题	半导体激光器专利数据库
作者单位	株式会社日立製作所
推荐引用方式 GB/T 7714	NAKAMURA SHIGERU,TSUNODA YOSHITO,MAEDA TAKESHI,et al. Semiconductor laser pen. JP1985205420A. 1985-10-17.

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