GB722006A - Infra-red transmitting mirror - Google Patents
Infra-red transmitting mirrorInfo
- Publication number
- GB722006A GB722006A GB12470/51A GB1247051A GB722006A GB 722006 A GB722006 A GB 722006A GB 12470/51 A GB12470/51 A GB 12470/51A GB 1247051 A GB1247051 A GB 1247051A GB 722006 A GB722006 A GB 722006A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- layer
- index layers
- layers
- support
- 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.)
- Expired
Links
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 abstract 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract 3
- 230000003287 optical effect Effects 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 229910001610 cryolite Inorganic materials 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 238000001429 visible spectrum Methods 0.000 abstract 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000005083 Zinc sulfide Substances 0.000 abstract 1
- 239000004922 lacquer Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 abstract 1
- 229910052716 thallium Inorganic materials 0.000 abstract 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 abstract 1
- CMJCEVKJYRZMIA-UHFFFAOYSA-M thallium(i) iodide Chemical compound [Tl]I CMJCEVKJYRZMIA-UHFFFAOYSA-M 0.000 abstract 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/285—Interference filters comprising deposited thin solid films
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/281—Interference filters designed for the infrared light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
722,006. Mirrors. SCHROEDER, H. May 28, 1951 [Dec. 27, 1948], No. 12470/51. Class 97 (1). A mirror comprises a support and a reflector superimposed on a surface thereof, said reflector consisting of at least one multi-layer interference film having alternate layers of high and low refractive index, each layer having an optical thickness approximately equal to one-quarter of the wavelength 550 mÁ so that minimum reflection occurs in the near infra-red region and amounts to less than 20 per cent while at least 80 per cent of the visible light is reflected. The support may be of glass and each high index layer may be of a material having an absorption coefficient equal to or smaller than 0.25 in the visible spectrum. In one mirror, the high refractive index layers are of antimony sulphide and the low index layers are of cryolite and the surface of the film may be protected by a coating of colourless lacquer or by a coating as of magnesium fluoride about 280 mÁ thick. To increase the reflection in the short wave region below 500 mÁ a substance, such as thallium sulphide, silicon or cadmium telluride, with an absorption coefficient greater than 0.10 in the visible spectrum may be used for the layer contacting the support. The mirror shown comprises a glass support 101 having thereon a film comprising high refractive index layers 14 as of zinc sulphide or thallium iodide and low index layers 15 as of cryolite or magnesium fluoride. Upon this film is deposited a layer 16 as of magnesium fluoride and having an optical thickness of approximately 412 mÁ. A further film is deposited on layer 16, this film having high index layers 17 and low index layers 18, each of these layers having an optical thickness different from the corresponding layer of the first film by at least 10 per cent. The thicknesses and refractive indices of the film may be so chosen that with an angle of incidence of at least 50 degrees on the top layer the intensity of that component of the light which vibrates parallel or perpendicular to the plane of incidence is suppressed after reflection so that substantially linearly polarized light is reflected. Specification 698,058 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE722006X | 1948-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB722006A true GB722006A (en) | 1955-01-19 |
Family
ID=6630590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12470/51A Expired GB722006A (en) | 1948-12-27 | 1951-05-28 | Infra-red transmitting mirror |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB722006A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3543812A1 (en) * | 1985-12-12 | 1987-06-19 | Leybold Heraeus Gmbh & Co Kg | METHOD FOR PRODUCING A PARTLY-PASTE OPTICAL BODY AND METHOD PRODUCED BY OPTICAL BODY |
| CN100489566C (en) * | 2005-11-14 | 2009-05-20 | 富士能株式会社 | Reflex mirror and optical pickup |
| CN114660696A (en) * | 2020-12-22 | 2022-06-24 | 宁波激智科技股份有限公司 | Light guide plate with infrared ray transmitting and visible light reflecting functions and backlight module |
-
1951
- 1951-05-28 GB GB12470/51A patent/GB722006A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3543812A1 (en) * | 1985-12-12 | 1987-06-19 | Leybold Heraeus Gmbh & Co Kg | METHOD FOR PRODUCING A PARTLY-PASTE OPTICAL BODY AND METHOD PRODUCED BY OPTICAL BODY |
| CN100489566C (en) * | 2005-11-14 | 2009-05-20 | 富士能株式会社 | Reflex mirror and optical pickup |
| CN114660696A (en) * | 2020-12-22 | 2022-06-24 | 宁波激智科技股份有限公司 | Light guide plate with infrared ray transmitting and visible light reflecting functions and backlight module |
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