GB468942A - Improvements in or relating to the duplication of diffraction gratings and like surface patterns - Google Patents

Improvements in or relating to the duplication of diffraction gratings and like surface patterns

Info

Publication number
GB468942A
GB468942A GB805037A GB805037A GB468942A GB 468942 A GB468942 A GB 468942A GB 805037 A GB805037 A GB 805037A GB 805037 A GB805037 A GB 805037A GB 468942 A GB468942 A GB 468942A
Authority
GB
United Kingdom
Prior art keywords
mould
gelatine
gel
glue
matrix
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
Application number
GB805037A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB805037A priority Critical patent/GB468942A/en
Publication of GB468942A publication Critical patent/GB468942A/en
Expired legal-status Critical Current

Links

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)
  • Medicinal Preparation (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

468,942. Moulding diffraction and like patterned surfaces. MERTON, T. R. Jan. 10, 1936, No. 8050/37. Divided out of 468,893. [Class 87 (ii)] [Also in Group XVI] Diffraction gratings and like surface patterns are moulded by bringing a mould into contact with a layer of gel in swollen condition on a support, drying the gel so as to harden it while in contact with the mould, and using the hardened gel as a matrix for moulding film, sheet or other material. The gel may be gelatine such as a photo-engraving glue and the mould may be a collodion skin moulded from a master pattern as described in Specification 468,893. Gelatine paper may be used and impressed by a collodion skin. Cellulosic or alginic material or celluloid sheets or thermoplastic synthetic resin may be impressed by the gelatine paper as matrix. The matrix surface 29 may be formed on an endless band or a roller 30 covered with glue containing a dichromate. Collodion skin moulds 25 are squeegeed thereon and removed after drying. The glue may be converted into hard enamel by heating. The patterned cylinder is used for impressing pre-formed film or sheet material such as regenerated cellulose films, or for casting cellulose acetate thereon and removing the film so formed. When celluloid sheets are impressed, they may be softened as by pyroxylin solution applied between the mould and the sheet. The matrix surfaces in hardened gelatine or glue may be used for lining a mould for synthetic resin such as a phenol formaldehyde condensation product.
GB805037A 1936-01-10 1936-01-10 Improvements in or relating to the duplication of diffraction gratings and like surface patterns Expired GB468942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB805037A GB468942A (en) 1936-01-10 1936-01-10 Improvements in or relating to the duplication of diffraction gratings and like surface patterns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB805037A GB468942A (en) 1936-01-10 1936-01-10 Improvements in or relating to the duplication of diffraction gratings and like surface patterns

Publications (1)

Publication Number Publication Date
GB468942A true GB468942A (en) 1937-07-12

Family

ID=9844815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB805037A Expired GB468942A (en) 1936-01-10 1936-01-10 Improvements in or relating to the duplication of diffraction gratings and like surface patterns

Country Status (1)

Country Link
GB (1) GB468942A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048247B (en) * 1953-11-30 1959-01-08 Ivar Johann Gerhard Grave Dipl Luminous surface with a diffraction grating structure on the surface and process for its production
DE1108461B (en) * 1954-10-14 1961-06-08 Nat Res Dev Method for copying optical diffraction grating replicas
EP2258564A1 (en) * 2009-06-03 2010-12-08 Valtion Teknillinen Tutkimuskeskus Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048247B (en) * 1953-11-30 1959-01-08 Ivar Johann Gerhard Grave Dipl Luminous surface with a diffraction grating structure on the surface and process for its production
DE1108461B (en) * 1954-10-14 1961-06-08 Nat Res Dev Method for copying optical diffraction grating replicas
EP2258564A1 (en) * 2009-06-03 2010-12-08 Valtion Teknillinen Tutkimuskeskus Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element
WO2010139661A1 (en) * 2009-06-03 2010-12-09 Valtion Teknillinen Tutkimuskeskus Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element
US20120132351A1 (en) * 2009-06-03 2012-05-31 Valtion Teknillinen Tutkimuskeskus Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element
JP2012529071A (en) * 2009-06-03 2012-11-15 バルティオン テクニリーネン トゥトキムスケスクス Method for generating a light diffraction effect on a target surface and transfer foil of a diffractive optical element
US8580065B2 (en) * 2009-06-03 2013-11-12 Valtion Teknillinen Tutkimuskeskus Method for creating a diffractive optical effect on a target surface and a transfer foil of a diffractive optical element

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