Method of making characteristic line

Details Method of making characteristic line Method of making characteristic line

2006-02-28

2008-07-08

Porta, David P. (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

07397033

ABSTRACT:
When making a characteristic line, a plurality of different small amount reference light beams is caused to impinge upon the photodetector element, a zero-light signal value is obtained by extrapolation of the relation between the small amount side reference light beams and the signal values which are respectively output from the photodetector element in response to the small amount side reference light beams, a large amount reference light signal value which is output when a large amount light beam impinges upon the photodetector element is obtained, and a characteristic line representing a relation between the amount of light which the photodetector element receives and a value of the signal which is output from the photodetector element is made on the basis of the zero-light signal value and the large amount reference light signal value.

REFERENCES:
patent: 5327210 (1994-07-01), Okui et al.
patent: 2003/0197847 (2003-10-01), Shinoda
patent: 2005/0083557 (2005-04-01), Nagano
patent: 2001-137175 (2001-05-01), None

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