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JPS51111343A - Filter - Google Patents

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Publication number
JPS51111343A
JPS51111343A JP3545375A JP3545375A JPS51111343A JP S51111343 A JPS51111343 A JP S51111343A JP 3545375 A JP3545375 A JP 3545375A JP 3545375 A JP3545375 A JP 3545375A JP S51111343 A JPS51111343 A JP S51111343A
Authority
JP
Japan
Prior art keywords
filter
grating
spectral
transmission
arkitrary
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
JP3545375A
Other languages
Japanese (ja)
Inventor
Toshikatsu Iwasaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3545375A priority Critical patent/JPS51111343A/en
Publication of JPS51111343A publication Critical patent/JPS51111343A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Filters (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE: To get a filter which has arkitrary spectral characteristics of transmission or reflection, a stigmatic concave diffraction grating and a mask placed at focal plane of the grating are used. The latter possesses a spectral transmission efficiency as a function of wave-length which is given arkitrarily.
COPYRIGHT: (C)1976,JPO&Japio
JP3545375A 1975-03-26 1975-03-26 Filter Pending JPS51111343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3545375A JPS51111343A (en) 1975-03-26 1975-03-26 Filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3545375A JPS51111343A (en) 1975-03-26 1975-03-26 Filter

Publications (1)

Publication Number Publication Date
JPS51111343A true JPS51111343A (en) 1976-10-01

Family

ID=12442215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3545375A Pending JPS51111343A (en) 1975-03-26 1975-03-26 Filter

Country Status (1)

Country Link
JP (1) JPS51111343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7426338B2 (en) 2004-11-29 2008-09-16 Olympus Imaging Corp. Switch mechanism usable underwater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7426338B2 (en) 2004-11-29 2008-09-16 Olympus Imaging Corp. Switch mechanism usable underwater
US7598465B2 (en) 2004-11-29 2009-10-06 Olympus Imaging Corp. Switch mechanism usable underwater
US7633027B2 (en) 2004-11-29 2009-12-15 Olympus Imaging Corp. Switch mechanism usable underwater

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