GB1041582A - A method of and an apparatus for producing shadings for cartographical purposes - Google Patents
A method of and an apparatus for producing shadings for cartographical purposesInfo
- Publication number
- GB1041582A GB1041582A GB924662A GB924662A GB1041582A GB 1041582 A GB1041582 A GB 1041582A GB 924662 A GB924662 A GB 924662A GB 924662 A GB924662 A GB 924662A GB 1041582 A GB1041582 A GB 1041582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relief
- camera lens
- lens
- reflecting
- shadings
- 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
- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/88—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof prepared by photographic processes for production of originals simulating relief
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
1,041,582. Photographic apparatus. T. RAPPEL. May 30, 1963 [March 9, 1962], 9246/62. Heading G2A. Apparatus for producing shadings for cartographic purposes comprises light sources arranged round a camera lens to illuminate a relief having surface between glossy and matt, the light sources being arranged so that their beams impinge on the relief at such an angle that they are reflected into the camera lens. As shown, a camera lens a has surrounding it a series of small light projectors d arranged in such manner that the axes of their beams meet at a point n situated on the opposite side of a relief b. The light reflected from the relief b is in the form of divergent cones the central axes of which vary according to the angle of slope of the reflecting surface of the relief, resulting in flat surfaces of the relief reflecting most of the incident light to the lens, and the most steeply sloped parts reflecting litte or none. In a modification Fig. 5 (not shown) the projectors are arranged about an aperture in a diaphragm which scans the relief, a converging lens being situated between the diaphragm and the camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB924662A GB1041582A (en) | 1962-03-09 | 1962-03-09 | A method of and an apparatus for producing shadings for cartographical purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB924662A GB1041582A (en) | 1962-03-09 | 1962-03-09 | A method of and an apparatus for producing shadings for cartographical purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1041582A true GB1041582A (en) | 1966-09-07 |
Family
ID=9868253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB924662A Expired GB1041582A (en) | 1962-03-09 | 1962-03-09 | A method of and an apparatus for producing shadings for cartographical purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1041582A (en) |
-
1962
- 1962-03-09 GB GB924662A patent/GB1041582A/en not_active Expired
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