Sensor head, luminance distribution measurement apparatus...

Optics: measuring and testing – Surface roughness

Reexamination Certificate

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Details

C356S445000, C250S208100, C250S2140RC

Reexamination Certificate

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06987571

ABSTRACT:
A sensor head has a multiplicity of linear image sensors in correspondence with different radial directions of light emitted from a pixel in a pixel line of an LCD panel. The linear image sensors extends in the direction of the axis of an imaginary semi-cylinder. The linear image sensors have light receiving faces that are angularly spaced apart on an imaginary semi-cylinder, with their light receiving faces having normals passing through the axis of the imaginary semi-cylinder. Interposed in the space between the LCD pixel and the linear image sensors is an optical system having a multiplicity of light paths associated with respective angular components of the radiation emitted from the pixel line. Each of the light paths receives a predetermined angular component of light and transmits the light thus reveived to a corresponding one of the linear image sensors.

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patent: 07-035645 (1995-02-01), None
patent: 07-294328 (1995-11-01), None
patent: 08-220014 (1996-08-01), None

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