METHOD AND SYSTEM FOR WAVELENGTH-DEPENDENT IMAGING AND DETECTION USING A HYBRID FILTER
    209.
    发明公开
    METHOD AND SYSTEM FOR WAVELENGTH-DEPENDENT IMAGING AND DETECTION USING A HYBRID FILTER 审中-公开
    方法和系统的波长依赖图用于检测通过使用混合滤波

    公开(公告)号:EP1695053A2

    公开(公告)日:2006-08-30

    申请号:EP04814458.8

    申请日:2004-12-14

    Abstract: An object (206) to be imaged or detected is illuminated by a single broadband light source or multiple light sources emitting light at different wavelengths. The light is detected by a detector (200), which includes a light-detecting sensor (400) covered by a hybrid filter. The hybrid filter includes a multi-band narrowband filter (516) mounted over a patterned filter layer (508). The light strikes the narrowband filter (516), which passes light at or near the multiple wavelengths of interest while blocking light at all other wavelengths. The patterned filter layer (508) alternately passes the light at one particular wavelength while blocking light at the other wavelengths of interest. This allows the sensor (400) to determine either simultaneously or alternately the intensity of the ligth at the wavelengths of interest. Filters (902) may also be mounted over the light at the light sources to narrow the spectra of the light sources.

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