JPS5244652A - Reflecting mirror for a single-lens reflex camera - Google Patents

Reflecting mirror for a single-lens reflex camera

Info

Publication number
JPS5244652A
JPS5244652A JP12026775A JP12026775A JPS5244652A JP S5244652 A JPS5244652 A JP S5244652A JP 12026775 A JP12026775 A JP 12026775A JP 12026775 A JP12026775 A JP 12026775A JP S5244652 A JPS5244652 A JP S5244652A
Authority
JP
Japan
Prior art keywords
reflecting mirror
lens reflex
reflex camera
coloration
finder
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
JP12026775A
Other languages
Japanese (ja)
Inventor
Yoshihiro Wada
Masaaki Kaneko
Yosuke Takahashi
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP12026775A priority Critical patent/JPS5244652A/en
Priority to DE19762645011 priority patent/DE2645011A1/en
Publication of JPS5244652A publication Critical patent/JPS5244652A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G02B5/085—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal
    • G02B5/0858—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal the reflecting layers comprising a single metallic layer with one or more dielectric layers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/142—Coating structures, e.g. thin films multilayers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
    • 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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Cameras In General (AREA)

Abstract

PURPOSE: To render an accurate TTL photometry by forming the semitransmitting portion of a reflecting mirror with a metallic film and a dielectric film so that a photometric error is prevented, caused by the coloration of the field of vision of a finder and a polarized component.
COPYRIGHT: (C)1977,JPO&Japio
JP12026775A 1975-10-07 1975-10-07 Reflecting mirror for a single-lens reflex camera Pending JPS5244652A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12026775A JPS5244652A (en) 1975-10-07 1975-10-07 Reflecting mirror for a single-lens reflex camera
DE19762645011 DE2645011A1 (en) 1975-10-07 1976-10-06 Partly transparent mirror for single lens reflex camera - has vapour-deposited metal and dielectric coatings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12026775A JPS5244652A (en) 1975-10-07 1975-10-07 Reflecting mirror for a single-lens reflex camera

Publications (1)

Publication Number Publication Date
JPS5244652A true JPS5244652A (en) 1977-04-07

Family

ID=14781975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12026775A Pending JPS5244652A (en) 1975-10-07 1975-10-07 Reflecting mirror for a single-lens reflex camera

Country Status (2)

Country Link
JP (1) JPS5244652A (en)
DE (1) DE2645011A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092234U (en) * 1983-11-29 1985-06-24 ミノルタ株式会社 Single-lens reflex camera viewfinder
JPH01222204A (en) * 1988-03-01 1989-09-05 Nitto Denko Corp Spectral filter
JPH0251102A (en) * 1988-08-12 1990-02-21 Nitto Denko Corp Spectral filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4983454A (en) * 1972-11-17 1974-08-10
JPS5039562A (en) * 1973-08-13 1975-04-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4983454A (en) * 1972-11-17 1974-08-10
JPS5039562A (en) * 1973-08-13 1975-04-11

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092234U (en) * 1983-11-29 1985-06-24 ミノルタ株式会社 Single-lens reflex camera viewfinder
JPH0453634Y2 (en) * 1983-11-29 1992-12-16
JPH01222204A (en) * 1988-03-01 1989-09-05 Nitto Denko Corp Spectral filter
JPH0251102A (en) * 1988-08-12 1990-02-21 Nitto Denko Corp Spectral filter

Also Published As

Publication number Publication date
DE2645011A1 (en) 1977-04-14

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