GB1428608A - Dichroic mirrors - Google Patents

Dichroic mirrors

Info

Publication number
GB1428608A
GB1428608A GB673374A GB673374A GB1428608A GB 1428608 A GB1428608 A GB 1428608A GB 673374 A GB673374 A GB 673374A GB 673374 A GB673374 A GB 673374A GB 1428608 A GB1428608 A GB 1428608A
Authority
GB
United Kingdom
Prior art keywords
feb
dichroic mirrors
canon
splitter
heading
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
Application number
GB673374A
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.)
Canon Inc
Original Assignee
Canon Inc
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 JP1813973A external-priority patent/JPS5710402B2/ja
Priority claimed from JP48089838A external-priority patent/JPS5039561A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB1428608A publication Critical patent/GB1428608A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • 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
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • 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
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Optical Filters (AREA)

Abstract

1428608 Dichroic mirror CANON KK 14 Feb 1974 [14 Feb 1973 10 Aug 1973] 6733/74 Heading G2J A colour discriminating mirror used as a splitter, comprises alternate layers having high and low refractive indices in which at least the first, second and last layer have an optical thickness deviating a minor amount from an odd multiple of a quarter wavelength. Optical data are given.
GB673374A 1973-02-14 1974-02-14 Dichroic mirrors Expired GB1428608A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1813973A JPS5710402B2 (en) 1973-02-14 1973-02-14
JP48089838A JPS5039561A (en) 1973-08-10 1973-08-10

Publications (1)

Publication Number Publication Date
GB1428608A true GB1428608A (en) 1976-03-17

Family

ID=26354772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB673374A Expired GB1428608A (en) 1973-02-14 1974-02-14 Dichroic mirrors

Country Status (2)

Country Link
DE (1) DE2406890A1 (en)
GB (1) GB1428608A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033572A2 (en) * 1980-02-05 1981-08-12 The Boeing Company Low backscatter illumination system
GB2195787A (en) * 1986-10-10 1988-04-13 Pilkington Perkin Elmer Ltd Interference filter
US4832448A (en) * 1986-10-10 1989-05-23 Pilkington P.E. Limited Interference filter
EP0418784A2 (en) * 1989-09-20 1991-03-27 Hitachi, Ltd. Lamp provided with thin film for reflecting infrared rays

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145113A (en) * 1977-08-05 1979-03-20 C. Reichert Optische Werke, Ag Color correcting interference filter
DE3324059A1 (en) * 1983-07-04 1985-01-17 Sano Kiko Co., Ltd., Sano, Tochigi Beam splitter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033572A2 (en) * 1980-02-05 1981-08-12 The Boeing Company Low backscatter illumination system
EP0033572A3 (en) * 1980-02-05 1982-09-15 The Boeing Company Low backscatter illumination system
GB2195787A (en) * 1986-10-10 1988-04-13 Pilkington Perkin Elmer Ltd Interference filter
US4832448A (en) * 1986-10-10 1989-05-23 Pilkington P.E. Limited Interference filter
GB2195787B (en) * 1986-10-10 1990-01-10 Pilkington Perkin Elmer Ltd Interference filter
EP0418784A2 (en) * 1989-09-20 1991-03-27 Hitachi, Ltd. Lamp provided with thin film for reflecting infrared rays
EP0418784A3 (en) * 1989-09-20 1991-08-14 Hitachi, Ltd. Lamp provided with thin film for reflecting infrared rays

Also Published As

Publication number Publication date
DE2406890A1 (en) 1974-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940213