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JPS5546730A - Albada finder - Google Patents

Albada finder

Info

Publication number
JPS5546730A
JPS5546730A JP11973178A JP11973178A JPS5546730A JP S5546730 A JPS5546730 A JP S5546730A JP 11973178 A JP11973178 A JP 11973178A JP 11973178 A JP11973178 A JP 11973178A JP S5546730 A JPS5546730 A JP S5546730A
Authority
JP
Japan
Prior art keywords
light
face
frame image
finder
light frame
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.)
Pending
Application number
JP11973178A
Other languages
Japanese (ja)
Inventor
Masatoshi Kimura
Yoshisada Hayamizu
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP11973178A priority Critical patent/JPS5546730A/en
Priority to DE19792938449 priority patent/DE2938449C2/en
Publication of JPS5546730A publication Critical patent/JPS5546730A/en
Pending 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
    • G03B13/06—Viewfinders with lenses with or without reflectors
    • G03B13/08—Viewfinders with lenses with or without reflectors with reflected image of frame

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)

Abstract

PURPOSE: To let even the light incident to the vicinity of the center of visual field contribute to the formation of light frame image and enable the easy-to-see and bright frame image to be obtained by forming the light frame reflecting surface by a curved face or the face not perpendicular to the optical axis of the finder.
CONSTITUTION: The face R5 of the objective lens side of a finder eyepiece lens E is made concave face and a light frame 1 is provided on this concave face. Then, even, the light illuminated the light frame 1 is entered to the pupils by the light from the center of the visual field and therefore it turns out that the light toward the entire partof the pupils is utilized. Because of this, even if the pupils are moved, the light frame image will not disappear and the bright light frame image is obtained, whereby the easy-to-see finder is provided.
COPYRIGHT: (C)1980,JPO&Japio
JP11973178A 1978-09-28 1978-09-28 Albada finder Pending JPS5546730A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11973178A JPS5546730A (en) 1978-09-28 1978-09-28 Albada finder
DE19792938449 DE2938449C2 (en) 1978-09-28 1979-09-22 Albada seeker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11973178A JPS5546730A (en) 1978-09-28 1978-09-28 Albada finder

Publications (1)

Publication Number Publication Date
JPS5546730A true JPS5546730A (en) 1980-04-02

Family

ID=14768720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11973178A Pending JPS5546730A (en) 1978-09-28 1978-09-28 Albada finder

Country Status (2)

Country Link
JP (1) JPS5546730A (en)
DE (1) DE2938449C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713435A (en) * 1980-06-26 1982-01-23 Nippon Kogaku Kk <Nikon> Inverted galilean finder of albada type
JPS59154429A (en) * 1983-02-23 1984-09-03 Asahi Optical Co Ltd Ocular having light frame
US4650293A (en) * 1984-10-11 1987-03-17 Minolta Camera Kabushiki Kaisha Albada finder optical system of inverted Galilean type
JPH0455025U (en) * 1990-09-20 1992-05-12

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57623A (en) * 1980-06-03 1982-01-05 Nippon Kogaku Kk <Nikon> Albada type finder
DE3421214A1 (en) * 1984-06-07 1985-12-12 Kodak Ag, 7000 Stuttgart VIEWFINDER FOR A PHOTOGRAPHIC CAMERA
US5218393A (en) * 1990-04-12 1993-06-08 Asahi Kogaku Kogyo Kabushiki Kaisha Viewfinder with field of view indicating frame

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004931B (en) * 1955-07-22 1957-03-21 Skf Kugellagerfabriken Gmbh Torsion pump
DE1081301B (en) * 1956-07-12 1960-05-05 Freiberger Praez Smechanik Veb Galilean style viewfinder with mirrored frame for photographic cameras
DE1100453B (en) * 1956-07-31 1961-02-23 Rodenstock Optik G Viewfinder with reflected image field limitation
DE1522180B2 (en) * 1965-12-24 1974-01-03 Minolta Camera K.K., Osaka (Japan) Photographic camera with an ALBADA viewfinder, automatic exposure for daylight and a warning lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713435A (en) * 1980-06-26 1982-01-23 Nippon Kogaku Kk <Nikon> Inverted galilean finder of albada type
JPS59154429A (en) * 1983-02-23 1984-09-03 Asahi Optical Co Ltd Ocular having light frame
US4650293A (en) * 1984-10-11 1987-03-17 Minolta Camera Kabushiki Kaisha Albada finder optical system of inverted Galilean type
JPH0455025U (en) * 1990-09-20 1992-05-12

Also Published As

Publication number Publication date
DE2938449C2 (en) 1985-03-28
DE2938449A1 (en) 1980-04-10

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