GB1175954A - Improvements in and relating to light dividers. - Google Patents
Improvements in and relating to light dividers.Info
- Publication number
- GB1175954A GB1175954A GB316268A GB316268A GB1175954A GB 1175954 A GB1175954 A GB 1175954A GB 316268 A GB316268 A GB 316268A GB 316268 A GB316268 A GB 316268A GB 1175954 A GB1175954 A GB 1175954A
- Authority
- GB
- United Kingdom
- Prior art keywords
- refractive index
- layers
- deposited
- light
- further layer
- 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
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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/142—Coating structures, e.g. thin films multilayers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Glass Compositions (AREA)
- Optical Filters (AREA)
Abstract
1,175,954. Light dividers. BALZERS PATENT-und BETEILIGUNGS A.G. Jan. 22, 1968 [Feb. 7, 1967], No.3162/68. Heading G2J. A light divider comprises a glass or other carrier on which alternate high and low refractive index layers are deposited of optical thickness # o /4n where # o is the mean wavelength of the working range and n is the refractive index of the individual layers, and on the uppermost layer a further layer of different refractive index to those of the other layers is deposited which provides a wider and flatter transmission band than if it were omitted. In an example alternate layers of titanium oxide (n = 2À4) and magnesium flouride (n = 1À38) are deposited and a further layer of refractive index 1À62 is then provided.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH190567A CH452221A (en) | 1967-02-07 | 1967-02-07 | Light splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1175954A true GB1175954A (en) | 1970-01-01 |
Family
ID=4221329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB316268A Expired GB1175954A (en) | 1967-02-07 | 1968-01-22 | Improvements in and relating to light dividers. |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT275185B (en) |
| CH (1) | CH452221A (en) |
| DE (1) | DE1622084A1 (en) |
| FR (1) | FR1552543A (en) |
| GB (1) | GB1175954A (en) |
| NL (1) | NL6706353A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3007049C2 (en) * | 1980-02-26 | 1982-12-09 | Agfa-Gevaert Ag, 5090 Leverkusen | Free-standing, color-neutral beam splitter |
| DE3050441C2 (en) * | 1980-02-26 | 1983-04-07 | Agfa Gevaert Ag | Monolithic, colourless beam splitter - esp. in camera viewfinders for automatic exposure, using substrate coated with alternate layers of magnesium fluoride and titania |
-
1967
- 1967-02-07 CH CH190567A patent/CH452221A/en unknown
- 1967-05-05 NL NL6706353A patent/NL6706353A/xx unknown
-
1968
- 1968-01-20 DE DE19681622084 patent/DE1622084A1/en active Pending
- 1968-01-22 GB GB316268A patent/GB1175954A/en not_active Expired
- 1968-01-30 FR FR1552543D patent/FR1552543A/fr not_active Expired
- 1968-02-06 AT AT110568A patent/AT275185B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| AT275185B (en) | 1969-10-10 |
| FR1552543A (en) | 1969-01-03 |
| DE1622084A1 (en) | 1970-10-29 |
| CH452221A (en) | 1968-05-31 |
| NL6706353A (en) | 1968-08-08 |
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