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    • 4. 发明授权
    • Illumination system employing an array of microprisms
    • 采用微棱镜阵列的照明系统
    • US5521725A
    • 1996-05-28
    • US368286
    • 1995-01-03
    • Karl W. BeesonIvan B. SteinerScott M. Zimmerman
    • Karl W. BeesonIvan B. SteinerScott M. Zimmerman
    • F21V5/02F21V8/00G02B6/00G02F1/1335G02B5/02
    • G02B6/0053F21V5/02F21Y2103/00Y10S385/901
    • An optical illumination system comprising a waveguide that accepts light generated by a diffuse light source and transmits the light via total internal reflection. Attached on one surface of the waveguide is a low index of refraction layer and an array of microprisms, with each microprism having an light input surface and at least one sidewall tilted at an angle from the direction normal to the surface of the waveguide such that light escapes from the waveguide, reflects off the tilted sidewalls and emerges from the microprism as a spatially-directed light source. The low index of refraction layer prevents low angle light from entering the microprisms. An array of microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source. The optical illumination system is advantageous for any application that requires a non diffuse or substantially collimated that is both energy efficient and contained in a low profile assembly.
    • 一种光学照明系统,包括:波导,其接收由漫射光源产生的光,并通过全内反射传输光。 附着在波导的一个表面上的是低折射率折射率层和微棱镜阵列,每个微棱镜具有一个光输入表面和至少一个从垂直于波导表面的方向倾斜的一个侧壁,使得光 从波导中逸出,反射出倾斜的侧壁,并从微棱镜作为空间定向的光源出射。 低折射率层防止低角度光进入微棱镜。 微透镜阵列可以被定位成接受微棱镜的输出,使得从微透镜出射的光是基本准直的光源。 光学照明系统对于需要非扩散或基本准直的任何应用都是有利的,其既能量效率又包含在低轮廓组件中。
    • 7. 发明授权
    • Lenticular illumination system
    • 透镜照明系统
    • US5949933A
    • 1999-09-07
    • US33772
    • 1998-03-03
    • Ivan B. SteinerKarl W. Beeson
    • Ivan B. SteinerKarl W. Beeson
    • F21V5/02F21V8/00G02B6/00G02B6/34
    • G02B6/0053F21V5/02G02B6/0055
    • An optical illumination system comprising a waveguide that accepts light and transmits the light via total internal reflection. Attached on one face of the waveguide is an array of lenticular microprisms, with each microprism having an light input surface optically coupled to the waveguide and a light output surface. The light input surface is defined by a number of tapered grooves which prevent light from escaping from the waveguide and further redirect light within the microprism. Light that escapes from the waveguide, reflects off the tilted sidewalls of the tapered grooves and emerges from the microprism as a spatially directed light source. An array of lenticular microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source.
    • 一种光学照明系统,包括接收光并通过全内反射透射光的波导。 附着在波导的一个面上的是透镜微棱镜的阵列,其中每个微棱镜具有光耦合到波导的光输入表面和光输出表面。 光输入表面由多个锥形槽限定,这些锥形槽防止光从波导中逸出,并进一步将光重定向在微棱镜内。 从波导中逸出的光从锥形凹槽的倾斜侧壁反射出来,并从微棱镜作为空间定向的光源出射。 透镜阵列可以定位成接受微棱镜的输出,使得从微透镜出射的光是基本准直的光源。