Projection display apparatus and method of controlling the same

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United States of America

PATENT NO 11323671
APP PUB NO 20210243414A1
SERIAL NO

17159597

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A projection display apparatus for projecting and displaying image light onto a projection plane includes an image light generator that generates the image light, a projection optical system including a projection lens that projects the image light onto the projection plane, a focus controller that controls focusing of the projection lens, and a temperature sensor that detects a temperature of the projection display apparatus. The focus controller operates to, calculate a plurality of focus deviation amounts which correspond respectively to a plurality of component groups based on first information obtained from the image light generator and second information obtained from the temperature sensor, the plurality of component groups being classified depending on kinds of components constructing the projection optical system, calculate a focus correction amount according to the plurality of focus deviation amounts calculated, and control the focusing based on the focus correction amount calculated.

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Patent Owner(s)

  • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akaiwa, Natsumi Osaka, JP 2 0
Morishita, Nao Osaka, JP 5 0
Nishihata, Kyousuke Nara, JP 2 5
Tanaka, Teruto Osaka, JP 9 43

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