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  1. Technology classes
  2. /G · Physics
  3. /G03 · Photography
  4. /G03B · Apparatus or arrangements for taking photographs or for projecting or viewing them
  5. /G03B 7/00 · Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
  6. /G03B 7/08 · Control effected solely on the basis of the response, to the intensity
  7. /G03B 7/099 · Arrangement of photoelectric elements in or on the camera
  8. /G03B 7/0993 · In the camera
  9. /G03B 7/0997 · Through the lens [ttl] measuring
  10. /G03B 7/09971 · In mirror-reflex cameras
  11. /G03B 7/09974
G03B 7/09974

Using the film or shutter as sensor light reflecting member

Official title: {using the film or shutter as sensor light reflecting member}

G03B7/09974 (Using the film or shutter as sensor light reflecting member) appears on 69 US grants and 2 published applications in this corpus.

Search patents in G03B

Where it sits

  1. GPhysics
  2. G03Photography
  3. G03BApparatus or arrangements for taking photographs or for projecting or viewing them
  4. G03B 7/00Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
  5. G03B 7/08Control effected solely on the basis of the response, to the intensity
  6. G03B 7/099Arrangement of photoelectric elements in or on the camera
  7. G03B 7/0993In the camera
  8. G03B 7/0997Through the lens [ttl] measuring
  9. G03B 7/09971In mirror-reflex cameras
  10. G03B 7/09974Using the film or shutter as sensor light reflecting member
Granted patents
69
Published applications
2
Assignees
16
Inventors
81
Latest grant
20 May 2003

Filings by year

Granted patentsPublished applications
G03B 7/09974: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197720
197850
197950
198010
198100
198210
198340
1984100
198510
198600
198710
198820
198920
199050
199120
199220
199340
199430
199550
199640
199730
199820
199910
200010
200102
200200
200320

1976198619962003

By publication year. Applications have been published since 2001.

Recent patents

  • Photometry device with light and colorimetric sensors20 May 2003US 6,567,617 B2PENTAX Corporation
  • Photometry device18 Mar 2003US 6,535,693 B2PENTAX Corporation
  • Electronic flash control device28 Nov 2000US 6,154,612 ANikon Corporation
  • Flash light amount controlling apparatus28 Dec 1999US 6,009,280 AMinolta Co., Ltd.
  • Flash light amount controlling apparatus12 May 1998US 5,752,101 AMinolta Co., Ltd.
  • Photometry device8 Nov 2001US 2001/0038753 A1Asahi Kogaku Kogyo Kabushiki Kaisha
  • Photometry device23 Aug 2001US 2001/0016117 A1ASSHI KOGAKU DOGYO KABUSHIKI KAISHA OF Tokyo, JAPAN

Most cited

By later US patents
  • Camera system with color temperature meter114US 5,710,948 ANikon Corporation · 1998
  • Camera and print information control apparatus41US 5,666,578 ANikon Corporation · 1997
  • TTL automatic flash control camera26US 5,164,759 ANikon Corporation · 1992
  • Camera with exposure control mechanism25US 4,075,640 AMinolta Camera Kabushiki Kaisha · 1978
  • Exposure calculating device24US 4,746,947 AMinolta Camera Kabushiki Kaisha · 1988

Top assignees

Documents
  • Nikon Corporation24
  • Canon Kabushiki Kaisha15
  • Olympus Optical Co., Ltd.8
  • AKAsahi Kogaku Kogyo Kabushiki Kaisha3
  • MCMinolta Camera Kabushiki Kaisha3
  • OOOlympus Optical Co., Ltd.3
  • AKAsahi Kogaku Kogyo Kabushiki Kaisha2
  • Minolta Co., Ltd.2
  • NKNippon Kogaku K. K.2
  • PENTAX Corporation2

Often classified with

  • G02BOptical elements, systems or apparatus9
  • H04NPictorial communication2
  • G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of1
  • G03DApparatus for processing exposed photographic materials1

Documents that also carry the other class.

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