Optics: motion pictures – Projection light sources
Reexamination Certificate
2005-12-27
2005-12-27
Fuller, Rodney (Department: 2851)
Optics: motion pictures
Projection light sources
C352S045000, C355S035000, C355S068000
Reexamination Certificate
active
06980276
ABSTRACT:
A photosensor detecting light-emission quantity from a light-emission lamp is set up, in order to regulate the current supplied with the light-emission lamp from a power according to a light-quantity detecting signal from the photosensor, so as to make the light-emission quantity from the light-emission lamp constant. Projected light-quantity onto a movie film is regulated and an image obtained from a shooting section becomes an image having a good quality with a little flicker.
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Hashimoto Kunika
Okano Tadashi
Frommer William S.
Frommer & Lawrence & Haug LLP
Fuller Rodney
Sony Corporation
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