GB817051A - Improvements in and relating to production of diffraction gratings - Google Patents
Improvements in and relating to production of diffraction gratingsInfo
- Publication number
- GB817051A GB817051A GB2964354A GB2964354A GB817051A GB 817051 A GB817051 A GB 817051A GB 2964354 A GB2964354 A GB 2964354A GB 2964354 A GB2964354 A GB 2964354A GB 817051 A GB817051 A GB 817051A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- grating
- master
- master grating
- plate
- 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
- 239000011347 resin Substances 0.000 abstract 7
- 229920005989 resin Polymers 0.000 abstract 7
- 239000007788 liquid Substances 0.000 abstract 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N Silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N Tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 1
- 230000001476 alcoholic Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- 150000007519 polyprotic acids Polymers 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 abstract 1
- 229910001887 tin oxide Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1847—Manufacturing methods
- G02B5/1852—Manufacturing methods using mechanical means, e.g. ruling with diamond tool, moulding
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
817,051. Diffraction gratings. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 14, 1955 [Oct. 14, 1954], No. 29643/54. Class 97(1) A long diffraction grating is cast in sections from a short master grating (e.g. a replica grating of hardened dichromategelatine) using a transparent stable resin which can be cold set, and discontinuities at the boundaries of each section are avoided by overlapping and aligning the master with the rulings of the previous section. Preferably, for the first section, liquid resin is poured on to a sheet of glass and the master grating placed face down on the liquid and pressed to squeeze out excess. As shown, subsequent sections are cast in the space 12 by liquid resin attracted between the master grating 1 and glass plate 5 by capillarity. The surface of a large plate 5 may be greyed for better adhesion on a small plate and may have a layer of silicon monoxide deposited on its surface in vacuo or tin oxide by cathode spluttering followed by calophony in alcoholic solution. The cold-setting resin may be unsaturated polyester of a polyhydric alcohol and a poly basic acid with or without the addition of a monomer such as styrene to promote cross-linking. The resin may be Marco 28C and may contain. 1 per cent of silicone oil to facilitate separation from the master grating when the latter is also of resin. Apparatus (Fig. 4, not shown) for effecting separation is described. For transmission gratings the refractive indices of the plate 5 and resin 4 are made as nearly equal as possible. Reflection gratings may be aluminized. Very fine wire spacers 11 may be used for locating the master grating. Specifications 468,893, 468,942 [both in Group XVI], 684,846 an 708,539 [both in Group XXIV] are referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817051A true GB817051A (en) | 1959-07-22 |
Family
ID=1741689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2964354A Expired GB817051A (en) | 1954-10-14 | Improvements in and relating to production of diffraction gratings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB817051A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3388735A (en) * | 1963-03-28 | 1968-06-18 | Nat Res Dev | Grazing incidence diffraction gratings |
| EP0175460A1 (en) * | 1984-08-08 | 1986-03-26 | Dr. Johannes Heidenhain GmbH | Manufacture of diffraction gratings |
| EP2466347A3 (en) * | 2010-12-15 | 2012-07-04 | Canon Kabushiki Kaisha | Method of manufacturing blazed diffractive grating and method of manufacturing mold for manufacturing blazed diffractive grating |
-
1954
- 1954-10-14 GB GB2964354A patent/GB817051A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3388735A (en) * | 1963-03-28 | 1968-06-18 | Nat Res Dev | Grazing incidence diffraction gratings |
| EP0175460A1 (en) * | 1984-08-08 | 1986-03-26 | Dr. Johannes Heidenhain GmbH | Manufacture of diffraction gratings |
| EP2466347A3 (en) * | 2010-12-15 | 2012-07-04 | Canon Kabushiki Kaisha | Method of manufacturing blazed diffractive grating and method of manufacturing mold for manufacturing blazed diffractive grating |
| US9201179B2 (en) | 2010-12-15 | 2015-12-01 | Canon Kabushiki Kaisha | Method of manufacturing blazed diffractive grating and method of manufacturing mold for manufacturing blazed diffractive grating |
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