Optics: motion pictures – Projection light sources
Reexamination Certificate
2005-06-21
2005-06-21
Fuller, Rodney (Department: 2851)
Optics: motion pictures
Projection light sources
C352S045000, C355S035000, C355S068000
Reexamination Certificate
active
06909489
ABSTRACT:
A luminous source apparatus, an image projecting apparatus, and an image projection converting apparatus to prevent a projected image, or an electronic image obtained through electronization of the projected image from intensity variations. A photosensor detects the light-emission quantity from a light-emission lamp in order to regulate the current supplied with the light-emission lamp 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.
REFERENCES:
patent: 3521952 (1970-07-01), Nelson et al.
patent: 3698809 (1972-10-01), Harter et al.
patent: 3817617 (1974-06-01), Weinert
patent: 4076414 (1978-02-01), Tulbert
patent: 4110039 (1978-08-01), Roder
patent: 4408838 (1983-10-01), Factor
patent: 4792829 (1988-12-01), Firmani
patent: 4816874 (1989-03-01), Terashita et al.
patent: 5063407 (1991-11-01), Takagi
patent: 5100805 (1992-03-01), Ziege et al.
patent: 5136397 (1992-08-01), Miyashita
patent: 5162841 (1992-11-01), Terashita
patent: 5369463 (1994-11-01), Terashita et al.
patent: 5528288 (1996-06-01), Sandor et al.
patent: 5555073 (1996-09-01), Grossman et al.
patent: 5986741 (1999-11-01), Kimura
Oriel Instruments: Online catalog, 68950 Light Intensity Control System, www.lotoriel.co.uk, 2004.
Hashimoto Kunika
Okano Tadashi
Frommer William S.
Frommer & Lawrence & Haug LLP
LandOfFree
Luminous source apparatus, image projecting apparatus and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Luminous source apparatus, image projecting apparatus and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminous source apparatus, image projecting apparatus and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3518890