Integrated solid state light emitting and detecting array...

Details Integrated solid state light emitting and detecting array... Integrated solid state light emitting and detecting array...

H - Electricity

01

L

H01L 31/173 (2006.01) G06K 7/10 (2006.01) G06K 9/18 (2006.01) H01L 25/16 (2006.01) H01L 27/15 (2006.01)

Patent

CA 2131465

2131465 9318555 PCTABS00025 There is provided an integrated semiconductor source-detector matrix (10) in which solid state photonic diodes (12a-12i) are configured as LEDs, disposed on a substrate and coupled to electronic circuits so that the diodes can be individually driven to emit light to detect light as may be desired. Providing an integrated matrix (10) of light source and light sensor units disposed in close proximity results in each unit having nearly coextensive fields of view and illumination (157). Apparatus, such as bar code and optical readers utilizing such a matrix are shown, and are insensitive to the diffusion and laminate effects. In alternate embodiments the matrix (10) is coupled to remote sensors (94) or another similar matrix to provide optical communication and interchange devices having high bandwidth.

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