GB183859A - Improvements in optical projection systems for use in engraving processes - Google Patents

Improvements in optical projection systems for use in engraving processes

Info

Publication number
GB183859A
GB183859A GB20924/22A GB2092422A GB183859A GB 183859 A GB183859 A GB 183859A GB 20924/22 A GB20924/22 A GB 20924/22A GB 2092422 A GB2092422 A GB 2092422A GB 183859 A GB183859 A GB 183859A
Authority
GB
United Kingdom
Prior art keywords
image
curvature
engraving
optical projection
watch case
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
GB20924/22A
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.)
WADSWORTH WATCH CASE CO
Original Assignee
WADSWORTH WATCH CASE CO
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 WADSWORTH WATCH CASE CO filed Critical WADSWORTH WATCH CASE CO
Publication of GB183859A publication Critical patent/GB183859A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/20—Exposure; Apparatus therefor
    • G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

183,859. Wadsworth Watch Case Co., (Assignees of Beebe, M. C.). July 30, 1921, [Convention date]. Photo-mechanical printing-surfaces. - In a method of engraving curved metallic or other surfaces which consists in coating the surface with light-sensitive material, optically projecting an image thereon, and treating the image to etch the pattern on the surface, a compensating lens is used in the optical projection system to produce curvature of the image corresponding to the curvature of the sensitized receiving surface. The arrangement shown comprises an electric arc 5, condenser 6, and objective 4, for projecting an image of a transparent design 1 upon a curved surface 2 such as a watch case carrying a layer of light-sensitive material. A lens 7 is placed in front of the surface to produce the desired curvature of the image. The Specification as open to inspection under Sect. 91 (3) (a) comprises also (1) chemical or electric treatment of the developed image to remove the material of the exposed surface or to deposit metal thereon, and (2) the application of the method of engraving to vitreous, ceramic, and pyroxylin surfaces. This subject-matter does not appear in the Specification as accepted.
GB20924/22A 1921-07-30 1922-07-31 Improvements in optical projection systems for use in engraving processes Expired GB183859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US183859XA 1921-07-30 1921-07-30

Publications (1)

Publication Number Publication Date
GB183859A true GB183859A (en) 1923-09-27

Family

ID=21787662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20924/22A Expired GB183859A (en) 1921-07-30 1922-07-31 Improvements in optical projection systems for use in engraving processes

Country Status (1)

Country Link
GB (1) GB183859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268203A2 (en) * 1986-11-18 1988-05-25 Siemens Aktiengesellschaft Process and arrangement for the modification of the image format in X-ray lithography

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268203A2 (en) * 1986-11-18 1988-05-25 Siemens Aktiengesellschaft Process and arrangement for the modification of the image format in X-ray lithography
EP0268203A3 (en) * 1986-11-18 1989-07-26 Siemens Aktiengesellschaft Process and arrangement for the modification of the image format in x-ray lithography

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