Title:
UNITED TYPE BEAM SHAPING OPTICAL SYSTEM
Document Type and Number:
Japanese Patent JPH01303403
Kind Code:
A
Abstract:
PURPOSE:To facilitate the alignment between a light source and a beam converting prism optical system, to decrease the number of components, and to improve the assembly accuracy by enabling an air layer to serves as a prism and uniting plural prism operations as to an anamorphic type beam shaping optical system. CONSTITUTION:For example, luminous flux 1 is mode incident on a glass block 2 and enters a hollowed air layer 3. Then the luminous flux enters the glass block again slantingly and is refracted and narrowed down to pass a glass raw material. Then the luminous flux enters a 2nd hollowed air layer 4 again and is made incident slantingly on an opposite surface and refracted, and further the beam luminous flux is narrowed down and projected from the glass block 2 as narrowed-down beam luminous flux 5. Thus, individual prisms which are used for beam conversion are united. Consequently, the alignment between the light source and beam converting prism optical system is facilitated, the number of components is decreased, the assembly accuracy is improved.
Inventors:
TATENO KIMIO
Application Number:
JP13271788A
Publication Date:
December 07, 1989
Filing Date:
June 01, 1988
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G02B5/04; G02B27/00; G02B27/09; G11B7/135; (IPC1-7): G02B5/04; G02B27/00; G11B7/135
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)
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