GB2273575B - A real image type of finder device - Google Patents

A real image type of finder device

Info

Publication number
GB2273575B
GB2273575B GB9400196A GB9400196A GB2273575B GB 2273575 B GB2273575 B GB 2273575B GB 9400196 A GB9400196 A GB 9400196A GB 9400196 A GB9400196 A GB 9400196A GB 2273575 B GB2273575 B GB 2273575B
Authority
GB
United Kingdom
Prior art keywords
real image
image type
finder device
finder
real
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9400196A
Other versions
GB2273575A (en
GB9400196D0 (en
Inventor
Yukio Takaoka
Shinsuke Kohmoto
Susao Nakamura
Katsuhiko Nozaki
Tadao Kato
Tetsuya Abe
Kazumoto Takakusagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1990013289U external-priority patent/JP2516845Y2/en
Priority claimed from JP1329090U external-priority patent/JPH0810809Y2/en
Priority claimed from JP1990013296U external-priority patent/JP2540388Y2/en
Priority claimed from GB9103196A external-priority patent/GB2241072B/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB9400196D0 publication Critical patent/GB9400196D0/en
Publication of GB2273575A publication Critical patent/GB2273575A/en
Application granted granted Critical
Publication of GB2273575B publication Critical patent/GB2273575B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders
    • G03B13/10—Viewfinders adjusting viewfinders field
    • G03B13/12—Viewfinders adjusting viewfinders field to compensate for change of camera lens or size of picture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders
    • G03B13/10—Viewfinders adjusting viewfinders field
    • G03B13/14—Viewfinders adjusting viewfinders field to compensate for parallax due to short range
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • G02B23/145—Zoom viewfinders
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2213/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B2213/02—Viewfinders
    • G03B2213/025—Sightline detection
GB9400196A 1990-02-14 1994-01-06 A real image type of finder device Expired - Fee Related GB2273575B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1329190 1990-02-14
JP1990013289U JP2516845Y2 (en) 1990-02-14 1990-02-14 Camera viewfinder
JP1329090U JPH0810809Y2 (en) 1990-02-14 1990-02-14 Camera cam device and strobe device
JP1990013296U JP2540388Y2 (en) 1990-02-14 1990-02-14 Zoom lens camera with macro shooting function
GB9103196A GB2241072B (en) 1990-02-14 1991-02-14 Zoom lens camera having macro photographing function

Publications (3)

Publication Number Publication Date
GB9400196D0 GB9400196D0 (en) 1994-03-02
GB2273575A GB2273575A (en) 1994-06-22
GB2273575B true GB2273575B (en) 1994-09-14

Family

ID=27517026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9400196A Expired - Fee Related GB2273575B (en) 1990-02-14 1994-01-06 A real image type of finder device

Country Status (1)

Country Link
GB (1) GB2273575B (en)

Also Published As

Publication number Publication date
GB2273575A (en) 1994-06-22
GB9400196D0 (en) 1994-03-02

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100214