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    • 2. 发明申请
    • OPTICAL DEVICE
    • 光学装置
    • US20090052039A1
    • 2009-02-26
    • US12192329
    • 2008-08-15
    • Yuko YOKOYAMAMasao TAKAHASHISatoshi KARASAWA
    • Yuko YOKOYAMAMasao TAKAHASHISatoshi KARASAWA
    • G02B5/18
    • G02B5/1866
    • An optical device comprises a first optical system, a second optical system, a shading unit, and a diffraction grating. The first optical system transforms incident light to parallel light. The second optical system transforms incident light to parallel light. An optical axis of the second optical system is different from an optical axis of the first optical system. The shading unit has transmission areas having slit forms and shading areas having strip forms. The transmission areas and the shading areas are alternately arranged. The diffraction grating deflects the light transmitted by the transmission areas in a predetermined direction. Part of the incident light through the first optical system passes through the transmission areas, and the rest are shaded by the shading areas. Part of the incident light through the second optical system passes through the transmission areas, and the rest are shaded by the shading areas.
    • 光学装置包括第一光学系统,第二光学系统,遮蔽单元和衍射光栅。 第一光学系统将入射光转换成平行光。 第二光学系统将入射光转换为平行光。 第二光学系统的光轴与第一光学系统的光轴不同。 阴影单元具有具有狭缝形式的透射区域和具有条形的阴影区域。 传输区域和阴影区域交替布置。 衍射光栅使预定方向上的透射区域透射的光偏转。 通过第一光学系统的入射光的一部分通过透射区域,其余的被阴影区域遮蔽。 通过第二光学系统的入射光的一部分通过透射区域,其余的被遮蔽区域遮蔽。