Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-10-02
2007-10-02
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S231180, C352S208000, C352S215000
Reexamination Certificate
active
10505182
ABSTRACT:
The invention relates to a method and a device for detecting the opening angle of the shutter (light or dark sector) of an adjustable rotating shutter (1) arranged in a film camera. Said shutter comprises a circular-segment-shaped or circular-sector shaped shutter wing (2) which is driven by a shutter motor via a shutter shaft (20), and also comprises an adjustable shutter adjustment wing (3) arranged in a coaxial manner in relation to the shutter wing (2) and which can be displaced in relation to said shutter wing by means of a shutter adjustment wing motor (33). According to the invention, the position of the shutter wing (2) and the position of the shutter adjustment wing (3) are detected during a rotation of the rotating shutter (1) and the difference between the two positions forms a value for the shutter opening angle or the light or dark sector of the rotating shutter (1).
REFERENCES:
patent: 3812351 (1974-05-01), Coberley
patent: 4889424 (1989-12-01), Saiki
patent: 5129725 (1992-07-01), Ishizuka et al.
patent: 5137346 (1992-08-01), Sattler et al.
patent: 5850277 (1998-12-01), Dang et al.
patent: 6850351 (2005-02-01), Djachiachvili
patent: 29 47 333 (1981-06-01), None
patent: 39 02 688 (1990-08-01), None
International Search Report of PCT/DE2003/00833, dated Aug. 4, 2003.
International Preliminary Examination Report of PCT/DE2003/00833, dated Nov. 19, 2003.
English language International Preliminary Examination Report, for International Application No. PCT/DE2003/000833, International Filing date of Mar. 11, 2003, dated Nov. 19, 2003.
Arnold & Richter Cine Technik GmbH & Co. Betriebs KG
Bui-Pho Pascal M.
Christie Parker & Hale LLP
Epps Georgia
LandOfFree
Method and device for detecting the opening angle of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for detecting the opening angle of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for detecting the opening angle of the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3875818