Patent US5664243A successfully refreshed from Google Patents.
US5664243A
Expired / Lapsed
US
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Camera
Assignee: Minolta Co Ltd
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Filing: 1996-06-06
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Granted: 1997-09-02
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Expires: 2016-06-06
Abstract
Abstract A camera divides a light beam having passed through a taking lens unit into two light beams. One light beam forms an image on a silver salt film. Another light beam forms an image on a CCD. A light path for said another light beam is provided with an aperture diaphragm. The taking lens unit has an aperture diaphragm. Said two aperture diaphragms are correlatively controlled by a controller incorporated in the camera.
Inventors
- 👤 Takashi Okada
- 👤 Shigeto Ohmori
- 👤 Hideki Nagata
- 👤 Tsutomu Honda
- 👤 Kiyoshi Seigenji
- 👤 Toshihiro Hamamura
- 👤 Tougo Teramoto
- 👤 Takashi Kato
- 👤 Hiroaki Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:21
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; G03B17/00; G03B17/48; H; H04; H04N; H04N23/00; H04N23/50; H04N23/53; H04N23/531; H04N23/70; H04N23/72; H04N23/75; H04N23/60; H04N23/63; H04N23/633; H04N23/67; H04N23/672
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
107 words
A camera for performing a first image formation and a second image formation by splitting a light beam incident through a taking optical system including a first aperture diaphragm, said first image formation being performed with a silver salt medium, said second image formation being performed electronically with an image pickup device, comprising: an image forming optical system disposed in a light path of one of said split light beams for directing the light beam toward the image pickup device; a second aperture diaphragm disposed in a light path within said image forming optical system; and a controller for controlling said first and second aperture diaphragms correlatively.
Claim 2
Dependent Claim
107 words
A camera for performing a first image formation and a second image formation by splitting a light beam incident through a taking optical system including a first aperture diaphragm, said first image formation being performed with a silver salt medium, said second image formation being performed electronically with an image pickup device, comprising: an image forming optical system disposed in a light path of one of said split light beams for directing the light beam toward the image pickup device; a second aperture diaphragm disposed in a light path within said image forming optical system; and a controller for controlling said first and second aperture diaphragms correlatively.
Claim 3
Dependent Claim
44 words
A camera as claimed in claim 1, wherein said controller controls said second aperture diaphragm to be controlled separately from said first aperture diaphragm when said first aperture diaphragm is controlled within a range between a predetermined aperture value and an open aperture value.
Claim 4
Dependent Claim
38 words
A camera as claimed in claim 2, wherein said predetermined aperture value is a/β when said image forming optical system is a reduction optical system having an open aperture value of a and a reduction factor of β.
Claim 5
Dependent Claim
50 words
A camera as claimed in claim 2, wherein said controller controls an aperture value of said first aperture diaphragm to be within a range between a first predetermined aperture value and an open aperture value when said second aperture diaphragm is controlled based on a predetermined second control aperture value.
Claim 6
Dependent Claim
41 words
A camera as claimed in claim 4, wherein said first predetermined aperture value is b/β when said image forming optical system is a reduction optical system having a reduction factor of β and said predetermined second control aperture value is b.
Claim 7
Dependent Claim
52 words
A camera as claimed in claim 1, wherein said controller controls an aperture value of said first aperture diaphragm to be within a range between a first predetermined aperture value and an open aperture value when an aperture of said second aperture diaphragm is controlled based on a predetermined second aperture value.
Claim 8
Dependent Claim
45 words
A camera as claimed in claim 6, wherein said first predetermined aperture value of said second aperture diaphragm is b/β when said image forming optical system is a reduction optical system having a reduction factor of β and said predetermined second aperture value is b.
Claim 9
Dependent Claim
36 words
A camera as claimed in claim 1, wherein said Second aperture diaphragm is capable of stopping a light path of the image forming optical system to interrupt a light beam incident on an image pickup device.
Claim 10
Dependent Claim
90 words
A camera for obtaining a first light beam and a second light beam by splitting a light beam incident through a taking optical system including a first aperture diaphragm, said first light beam being used for image formation, said second light beam being used for observing a subject image, comprising: a relay optical system disposed in a light path of said second light beam; a second aperture diaphragm disposed in a light path inside said relay optical system; and a controller for controlling said first and second aperture diaphragms correlatively.
Claim 11
Dependent Claim
90 words
A camera for obtaining a first light beam and a second light beam by splitting a light beam incident through a taking optical system including a first aperture diaphragm, said first light beam being used for image formation, said second light beam being used for observing a subject image, comprising: a relay optical system disposed in a light path of said second light beam; a second aperture diaphragm disposed in a light path inside said relay optical system; and a controller for controlling said first and second aperture diaphragms correlatively.
Claim 12
Dependent Claim
44 words
A camera as claimed in claim 9, wherein said controller controls said second aperture diaphragm to be controlled separately from said first aperture diaphragm when said first aperture diaphragm is controlled within a range between a predetermined aperture value and an open aperture value.
Claim 13
Dependent Claim
37 words
A camera as claimed in claim 10, wherein said predetermined aperture value is a/β when said taking optical system is a reduction optical system having an open aperture value of a and a reduction factor of β.
Claim 14
Dependent Claim
50 words
A camera as claimed in claim 10, wherein said controller controls an aperture value of said first aperture diaphragm to be within a range between a first predetermined aperture value and an open aperture value when said second aperture diaphragm is controlled based on a predetermined second control aperture value.
Claim 15
Dependent Claim
40 words
A camera as claimed in claim 12, wherein said first predetermined aperture value is b/β when said relay optical system is a reduction optical system having a reduction factor of β and said predetermined second control aperture value is b.
Claim 16
Dependent Claim
52 words
A camera as claimed in claim 9, wherein said controller controls an aperture value of said first aperture diaphragm to be within a range between a first predetermined aperture value and an open aperture value when an aperture of said second aperture diaphragm is controlled based on a predetermined second aperture value.
Claim 17
Dependent Claim
38 words
A camera as claimed in claim 14, wherein said first predetermined aperture value is b/β when said relay optical system is a reduction optical system having a reduction factor of and said predetermined second aperture value is b.
Claim 18
Dependent Claim
24 words
A camera as claimed in claim 11, wherein said second aperture diaphragm is capable of stopping the light path to interrupt a light beam.
Claim 19
Dependent Claim
152 words
A camera which splits a light beam incident through a taking optical system including a first aperture diaphragm, one of split light beams being used for image formation on a photosensitive recording medium, another of the split light beams being used for image formation on an image pickup device for observation through an electronic viewfinder, comprising: a setting device for setting an aperture value of said first aperture diaphragm; a second aperture diaphragm disposed in a light path of said another light beam; and a controller for driving said first aperture diaphragm based on a setting by said setting device during image formation on said photosensitive recording medium, and for driving said second aperture diaphragm based on a setting by said setting device except during image formation on said photosensitive recording medium to perform image formation with said image pickup device so that a formed image is displayed in the electronic viewfinder.
Claim 20
Dependent Claim
152 words
A camera which splits a light beam incident through a taking optical system including a first aperture diaphragm, one of split light beams being used for image formation on a photosensitive recording medium, another of the split light beams being used for image formation on an image pickup device for observation through an electronic viewfinder, comprising: a setting device for setting an aperture value of said first aperture diaphragm; a second aperture diaphragm disposed in a light path of said another light beam; and a controller for driving said first aperture diaphragm based on a setting by said setting device during image formation on said photosensitive recording medium, and for driving said second aperture diaphragm based on a setting by said setting device except during image formation on said photosensitive recording medium to perform image formation with said image pickup device so that a formed image is displayed in the electronic viewfinder.
Claim 21
Dependent Claim
30 words
A camera as claimed in claim 17, wherein said controller controls an electric charge accumulation time for the image pickup device in synchronization with operation of said second aperture diaphragm.
Claim 22
Dependent Claim
25 words
A camera as claimed in claim 17, further comprising: a variable-density filter disposed in a light path for image formation on said image pickup device.
Claim 23
Dependent Claim
130 words
A camera which splits a light beam incident through a taking optical system, one of split light beams being used for image formation on a photosensitive recording medium through a shutter, other of split light beams being used for image formation with an image pickup device so that a formed image is observed through an electronic viewfinder, comprising: a setting device for setting a control shutter speed of said shutter; and a controller for driving said shutter based on a setting by said setting device during image formation on said photosensitive recording medium, and for controlling an electric charge accumulation time of said image pickup device except during image formation on said photosensitive recording medium to perform image formation so that a formed image is displayed in the electronic viewfinder.
Claim 24
Dependent Claim
130 words
A camera which splits a light beam incident through a taking optical system, one of split light beams being used for image formation on a photosensitive recording medium through a shutter, other of split light beams being used for image formation with an image pickup device so that a formed image is observed through an electronic viewfinder, comprising: a setting device for setting a control shutter speed of said shutter; and a controller for driving said shutter based on a setting by said setting device during image formation on said photosensitive recording medium, and for controlling an electric charge accumulation time of said image pickup device except during image formation on said photosensitive recording medium to perform image formation so that a formed image is displayed in the electronic viewfinder.
Claim 25
Dependent Claim
39 words
A camera as claimed in claim 20, further comprising: an aperture diaphragm disposed in a light path of said other light beam and operated in synchronization with control of the electric charge accumulation time of said image pickup device.
Claim 26
Dependent Claim
26 words
A camera as claimed in claim 20, further comprising: a variable-density filter is disposed in a light path for image formation on said image pickup device.
References Cited (Backward Citations)
US4855837A
Cited
JPS63284527A
Cited
JPH03271730A
Cited
US5486893A
Cited
US5557358A
Cited
US5589880A
Cited
US5459511A
Cited
US5587766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-01 | 2001-03-03 | 2001-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-01 | 2005-03-03 | 2005-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-01 | 2009-03-03 | 2009-09-02 | $7700.00 | Window Closed / Lapsed |