Abstract: A correlated color temperature measuring device for measuring the color temperature of light includes a sensor (21,22,23) which individually senses plural light components (R,G,B) of light (24) incident thereon and for providing plural corresponding digital color component signals representative thereof, a memory (31) which stores correction data for correcting the plural digital color temperature component signals, and a processor (30) which receives the plural digital color component signals from the sensor. The processor (30) accesses the correction data in the memory (31), corrects the plural color component signals from the sensor based on the correction data and derives a digital signal representative of the color temperature of the incident light. The derived digital signal may be displayed on a digital display (14) or may be outputted on a digital I/O interface (32) in response to a request for digital color temperature information.

Int'l Class: G01J00560 H04N00146

Priority: US 981396 19921125

Designated States: DE FR GB IT