| 摘要 |
A portable, hand held, color reading device is provided for determining and displaying the color of an object. This device illuminates the object with series of colored light pulses produced by multiple Light Emitting Diodes, commonly called LEDs. The device has six LEDs, Red, Orange Yellow, Green, Bluish Green, and Blue, but additional LEDs may be used for finer color measurement and fewer LEDs may be used for coarser color measurement. The object's spectral reflectance is determined by measuring the reflected light during each LED's light pulse by a photo detector. The object color is then determined by comparing the relative strengths of the light reflectance that is measured during each LED color illumination. The Color may be displayed on the device's LCD, or read by a host computer through a PC I/O interface for use within Application software. The object's color may be displayed in various selectable color formats.
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