JPS54103060A - Optical filter - Google Patents
Optical filterInfo
- Publication number
- JPS54103060A JPS54103060A JP955478A JP955478A JPS54103060A JP S54103060 A JPS54103060 A JP S54103060A JP 955478 A JP955478 A JP 955478A JP 955478 A JP955478 A JP 955478A JP S54103060 A JPS54103060 A JP S54103060A
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelengthes
- longer
- mirror
- shorter
- 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
Links
Abstract
PURPOSE: To realize a narrow band pass filter as a simle but highly efficient one by reflecting an incident light several times between mirrors which are arranged to face each other and which have different wavelength and reflection characteristics.
CONSTITUTION: A mirror M1 has a reflection factor of 5 % for wavelengthes shorter than λ1 and of 99 % for wavelengthes longer than λ2, whereas a mirror M2 has a reflection factor of 99 % for wavelenthes shorter than λ3 and of 5 % for wavelengthes longer than λ4. Those mirrors M1 and M2 are arranged to face each other so that incident light P1 is reflected several times inbetween and is converted into an emanating light P2. Thus, the light having wavelengthes sorter than λ1 and longer than λ4 is blocked, whereas the light having wavelengthes between λ2 and λ3 is allowed to transmit so that the ratio between the transmissive band light and the blocked band light of the emanating light P2 is so increased to improve the characteristics as the band pass filter.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP955478A JPS54103060A (en) | 1978-01-31 | 1978-01-31 | Optical filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP955478A JPS54103060A (en) | 1978-01-31 | 1978-01-31 | Optical filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54103060A true JPS54103060A (en) | 1979-08-14 |
Family
ID=11723489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP955478A Pending JPS54103060A (en) | 1978-01-31 | 1978-01-31 | Optical filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103060A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4487478A (en) * | 1982-02-09 | 1984-12-11 | Pda Engineering | Laser protection device |
WO2002086580A3 (en) * | 2001-04-23 | 2003-05-01 | Leica Microsystems | Reflecting filter system in an illuminating device |
US6807335B2 (en) | 2001-07-25 | 2004-10-19 | Fujitsu Limited | Wavelength characteristic variable apparatus |
CN107783218A (en) * | 2016-08-31 | 2018-03-09 | 上海兆九光电技术有限公司 | A kind of deep ultraviolet bandpass filter and preparation method thereof |
JP2018146765A (en) * | 2017-03-06 | 2018-09-20 | 河合光学株式会社 | Method for forming optical filter |
-
1978
- 1978-01-31 JP JP955478A patent/JPS54103060A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4487478A (en) * | 1982-02-09 | 1984-12-11 | Pda Engineering | Laser protection device |
WO2002086580A3 (en) * | 2001-04-23 | 2003-05-01 | Leica Microsystems | Reflecting filter system in an illuminating device |
US7268940B2 (en) | 2001-04-23 | 2007-09-11 | Vistec Semiconductor Systems Gmbh | Illuminating device |
US6807335B2 (en) | 2001-07-25 | 2004-10-19 | Fujitsu Limited | Wavelength characteristic variable apparatus |
CN107783218A (en) * | 2016-08-31 | 2018-03-09 | 上海兆九光电技术有限公司 | A kind of deep ultraviolet bandpass filter and preparation method thereof |
JP2018146765A (en) * | 2017-03-06 | 2018-09-20 | 河合光学株式会社 | Method for forming optical filter |
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