JPS646905A - Laser light reflecting filter - Google Patents

Laser light reflecting filter

Info

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
Application number
JP16267287A
Other languages
Japanese (ja)
Other versions
JP2637432B2 (en
Inventor
Yoshiyasu Koyama
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.)
Hoya Corp
Original Assignee
Hoya Corp
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 Hoya Corp filed Critical Hoya Corp
Priority to JP62162672A priority Critical patent/JP2637432B2/en
Publication of JPS646905A publication Critical patent/JPS646905A/en
Application granted granted Critical
Publication of JP2637432B2 publication Critical patent/JP2637432B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62162672A 1987-06-30 1987-06-30 Laser light reflection filter lens Expired - Lifetime JP2637432B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (11)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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