JPS57119315A - Dividing method of luminous flux - Google Patents

Dividing method of luminous flux

Info

Publication number
JPS57119315A
JPS57119315A JP575381A JP575381A JPS57119315A JP S57119315 A JPS57119315 A JP S57119315A JP 575381 A JP575381 A JP 575381A JP 575381 A JP575381 A JP 575381A JP S57119315 A JPS57119315 A JP S57119315A
Authority
JP
Japan
Prior art keywords
component
luminous flux
mirror
incident
dividing ratio
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
JP575381A
Other languages
Japanese (ja)
Inventor
Takashi Kawabata
Mitsuya Hosoe
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
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP575381A priority Critical patent/JPS57119315A/en
Publication of JPS57119315A publication Critical patent/JPS57119315A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
    • 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
    • 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
    • G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE:To suppress the fluctuation of dividing ratio which depends on the wavelengths among the divided luminous fluxes, by making incident a luminous flux in a specific deflecting state. CONSTITUTION:When a nonpolarized luminous flux 17 is made incident to a quick return mirror 4, the S component 18 is mainly reflected by a semitransparent thin film formed on the surface of the mirror 4. The transmitted light 16 is deflected to the lower part by a secondary mirror 6. The light 16 has the main component P and the secondary component S for its constitution of polarization. Under such conditions, it is easy to form a luminous flux dividing optical system 8' so as to make the wavelength characteristics of the dividing ratio stable to the component P. Furthermore the P component ratio of the transmitted light is sufficiently increased by increasing the number of thin film layers of the mirror 4. As a result, the incident deflecting conditions is constant to the system 8' to prevent the fluctuation of dividing ratio which depends on the wavelengths among divided luminous fluxes.
JP575381A 1981-01-17 1981-01-17 Dividing method of luminous flux Pending JPS57119315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP575381A JPS57119315A (en) 1981-01-17 1981-01-17 Dividing method of luminous flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP575381A JPS57119315A (en) 1981-01-17 1981-01-17 Dividing method of luminous flux

Publications (1)

Publication Number Publication Date
JPS57119315A true JPS57119315A (en) 1982-07-24

Family

ID=11619874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP575381A Pending JPS57119315A (en) 1981-01-17 1981-01-17 Dividing method of luminous flux

Country Status (1)

Country Link
JP (1) JPS57119315A (en)

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