Projector and exposure adjustment method

Details Projector and exposure adjustment method Projector and exposure adjustment method

2006-12-05

2006-12-05

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C348S364000, C353S101000, C396S063000

Reexamination Certificate

active

07145733

ABSTRACT:
The CPU120acquires zoom level sent by the zoom lens position detector122,and on the basis of the acquired zoom level calculates a exposure target value depending on the particular zoom level. The CPU120establishes in the imaging controller105an exposure target value R calculated depending on zoom level Z, and issues an imaging command to the imaging controller105.By so doing, the average value of gradation values of the white portion in the imaged image can be substantially maintained at the desired tone level.

REFERENCES:
patent: 6707500 (2004-03-01), Tamura et al.
patent: 08256288 (1996-10-01), None
patent: 2000-241874 (2000-09-01), None

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