JPS572009A - Color separation filter - Google Patents

Color separation filter

Info

Publication number
JPS572009A
JPS572009A JP7649080A JP7649080A JPS572009A JP S572009 A JPS572009 A JP S572009A JP 7649080 A JP7649080 A JP 7649080A JP 7649080 A JP7649080 A JP 7649080A JP S572009 A JPS572009 A JP S572009A
Authority
JP
Japan
Prior art keywords
light transmissive
thin film
film layer
refractive index
color separation
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
JP7649080A
Other languages
Japanese (ja)
Inventor
Yoshitaka Aoki
Eiichiro Tanaka
Kosaku Yano
Shinji Fujiwara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7649080A priority Critical patent/JPS572009A/en
Priority to EP80302870A priority patent/EP0024876B1/en
Priority to DE8080302870T priority patent/DE3066595D1/en
Priority to US06/179,875 priority patent/US4355866A/en
Priority to CA358,772A priority patent/CA1131956A/en
Publication of JPS572009A publication Critical patent/JPS572009A/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
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Optical Filters (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

PURPOSE:To improve a transmission factor and a color separation, by placing a light transmissive thin film layer between a light transmissive substrate and a semiconductor filter, and adjusting the thickness of a film of the light transmissive thin film layer within a specific range. CONSTITUTION:A color separation filter is constituted of a glass substrate 1, a cyanic color transmissive dichroic filter 2, a yellow color transmissive thin film semiconductor filter 3, the first light transmissive thin film layer 4, the second light transmissive thin film layer 5, a glass layer 6 and a light transmissive dielectric material 7. The relation of nS<=nT1<=nF, nD<=nT2<=nF are satisfied among a refractive index nS of the glass substrate 1, a refractive index nF of the semiconductor filter 3, a refractive index nT1 of the first light transmissive thin film layer 4, a refractive index nT2 of the second light transmissive thin film layer 5 and a refractive index nD of the light transmissive dielectric material 7. In this color separation filter, when thickness of a film of the first light transmissive thin film layer 4 is adjusted to 0.04-0.08mum, the transmission factor can be improved to about >=95%, that is to say, to the extent of being able to practically disregard the color separation failure caused by a decline of the transmission factor.
JP7649080A 1979-08-21 1980-06-05 Color separation filter Pending JPS572009A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP7649080A JPS572009A (en) 1980-06-05 1980-06-05 Color separation filter
EP80302870A EP0024876B1 (en) 1979-08-21 1980-08-19 Semiconductor stripe filter
DE8080302870T DE3066595D1 (en) 1979-08-21 1980-08-19 Semiconductor stripe filter
US06/179,875 US4355866A (en) 1979-08-21 1980-08-20 Stripe-color filter
CA358,772A CA1131956A (en) 1979-08-21 1980-08-21 Stripe-color filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7649080A JPS572009A (en) 1980-06-05 1980-06-05 Color separation filter

Publications (1)

Publication Number Publication Date
JPS572009A true JPS572009A (en) 1982-01-07

Family

ID=13606653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7649080A Pending JPS572009A (en) 1979-08-21 1980-06-05 Color separation filter

Country Status (1)

Country Link
JP (1) JPS572009A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6315204A (en) * 1986-07-07 1988-01-22 Dainippon Printing Co Ltd Color filter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282253A (en) * 1975-12-27 1977-07-09 Matsushita Electric Ind Co Ltd Stripe filter for color separation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282253A (en) * 1975-12-27 1977-07-09 Matsushita Electric Ind Co Ltd Stripe filter for color separation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6315204A (en) * 1986-07-07 1988-01-22 Dainippon Printing Co Ltd Color filter

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