JPS646905A - Laser light reflecting filter - Google Patents
Laser light reflecting filterInfo
- Publication number
- JPS646905A JPS646905A JP16267287A JP16267287A JPS646905A JP S646905 A JPS646905 A JP S646905A JP 16267287 A JP16267287 A JP 16267287A JP 16267287 A JP16267287 A JP 16267287A JP S646905 A JPS646905 A JP S646905A
- Authority
- JP
- Japan
- Prior art keywords
- reflecting film
- reflecting
- lambda1
- laser light
- refractive index
- 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.)
- Granted
Links
Abstract
PURPOSE:To improve the visibility of a body to be observed and to prevent the change of decrease in reflecting (light shielding) ability to angle of incidence of laser light on the filter surface by a laser light reflecting filter by providing a 1st reflecting film on one surface of a substrate and a 2nd reflecting film on the other surface. CONSTITUTION:The 1st reflecting film 3 on the transparent substrate 2 is formed by laminating a material 5 with a high refractive factor and a material 6 with a low refractive index alternately to optical thickness lambda1/4(2m+1) (lambda1=lambda+x and 0<=x<=100nm when (m) is 0 or 1 and lambda1 is the oscillation wavelength of a laser). The reflecting film 4 on the reverse surface, on the other hand, is formed by laminating a material 5 with a high refractive index and a material 6 with a low refractive index alternately to optical thickness lambda2/4(2m+1) (where (m) is 0 or 1 and lambda2 is wavelength which is about 60-250nm longer than said lambda1). A light beam which is incident within a 0-50 deg. incidence angle rage is reflected by the 1st reflecting film 3 and a light beam which is incident at >=60 deg. is reflected by the 2nd reflecting film 3. Consequently, the reflecting (light shielding) ability is prevented from decreasing and the superior visibility is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62162672A JP2637432B2 (en) | 1987-06-30 | 1987-06-30 | Laser light reflection filter lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62162672A JP2637432B2 (en) | 1987-06-30 | 1987-06-30 | Laser light reflection filter lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS646905A true JPS646905A (en) | 1989-01-11 |
JP2637432B2 JP2637432B2 (en) | 1997-08-06 |
Family
ID=15759094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62162672A Expired - Lifetime JP2637432B2 (en) | 1987-06-30 | 1987-06-30 | Laser light reflection filter lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2637432B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08146360A (en) * | 1994-11-25 | 1996-06-07 | Laser Techno Kk | Spectacles for visual recognition of laser reflected beam and method for visual recognition of laser reflected beam as well as marking method |
JP2005321753A (en) * | 2004-04-05 | 2005-11-17 | Olympus Corp | Vertical illumination microscope and fluorescence filter set |
JP2011054862A (en) * | 2009-09-04 | 2011-03-17 | Hitachi Cable Ltd | Epitaxial wafer, light-emitting element, method of manufacturing the epitaxial wafer, and method of manufacturing the light-emitting element |
JP2011082233A (en) * | 2009-10-05 | 2011-04-21 | Hitachi Cable Ltd | Light emitting element |
JP2013245485A (en) * | 2012-05-25 | 2013-12-09 | Naberu:Kk | Space partition structure |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52137857U (en) * | 1976-04-14 | 1977-10-19 | ||
JPS53125045A (en) * | 1977-04-08 | 1978-11-01 | Ricoh Co Ltd | Multilaer film reflecting mirror |
JPS541469A (en) * | 1977-05-23 | 1979-01-08 | Bepex Corp | Pressing filter |
JPS5658651U (en) * | 1979-10-11 | 1981-05-20 | ||
JPS5811901A (en) * | 1981-07-15 | 1983-01-22 | Minolta Camera Co Ltd | Multilayered semipermeable mirror |
JPS6067905A (en) * | 1983-09-24 | 1985-04-18 | Nec Corp | Reflection mirror for argon ion laser |
JPS60150005A (en) * | 1984-01-18 | 1985-08-07 | Fuji Xerox Co Ltd | Filter of copying machine or the like |
JPS61289305A (en) * | 1985-06-17 | 1986-12-19 | Fujitsu Ltd | Variable wavelength filter |
JPS63179302A (en) * | 1987-01-21 | 1988-07-23 | Mitsubishi Electric Corp | Wide-band reflection mirror |
JPS63183401A (en) * | 1987-01-27 | 1988-07-28 | Toshiba Corp | Production of multi-layered reflecting mirror |
JPS63235902A (en) * | 1987-03-25 | 1988-09-30 | Toshiba Corp | Cold mirror |
-
1987
- 1987-06-30 JP JP62162672A patent/JP2637432B2/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52137857U (en) * | 1976-04-14 | 1977-10-19 | ||
JPS53125045A (en) * | 1977-04-08 | 1978-11-01 | Ricoh Co Ltd | Multilaer film reflecting mirror |
JPS541469A (en) * | 1977-05-23 | 1979-01-08 | Bepex Corp | Pressing filter |
JPS5658651U (en) * | 1979-10-11 | 1981-05-20 | ||
JPS5811901A (en) * | 1981-07-15 | 1983-01-22 | Minolta Camera Co Ltd | Multilayered semipermeable mirror |
JPS6067905A (en) * | 1983-09-24 | 1985-04-18 | Nec Corp | Reflection mirror for argon ion laser |
JPS60150005A (en) * | 1984-01-18 | 1985-08-07 | Fuji Xerox Co Ltd | Filter of copying machine or the like |
JPS61289305A (en) * | 1985-06-17 | 1986-12-19 | Fujitsu Ltd | Variable wavelength filter |
JPS63179302A (en) * | 1987-01-21 | 1988-07-23 | Mitsubishi Electric Corp | Wide-band reflection mirror |
JPS63183401A (en) * | 1987-01-27 | 1988-07-28 | Toshiba Corp | Production of multi-layered reflecting mirror |
JPS63235902A (en) * | 1987-03-25 | 1988-09-30 | Toshiba Corp | Cold mirror |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08146360A (en) * | 1994-11-25 | 1996-06-07 | Laser Techno Kk | Spectacles for visual recognition of laser reflected beam and method for visual recognition of laser reflected beam as well as marking method |
JP2005321753A (en) * | 2004-04-05 | 2005-11-17 | Olympus Corp | Vertical illumination microscope and fluorescence filter set |
JP2011054862A (en) * | 2009-09-04 | 2011-03-17 | Hitachi Cable Ltd | Epitaxial wafer, light-emitting element, method of manufacturing the epitaxial wafer, and method of manufacturing the light-emitting element |
JP2011082233A (en) * | 2009-10-05 | 2011-04-21 | Hitachi Cable Ltd | Light emitting element |
JP2013245485A (en) * | 2012-05-25 | 2013-12-09 | Naberu:Kk | Space partition structure |
Also Published As
Publication number | Publication date |
---|---|
JP2637432B2 (en) | 1997-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080425 Year of fee payment: 11 |