BE490537A - - Google Patents
Info
- Publication number
- BE490537A BE490537A BE490537DA BE490537A BE 490537 A BE490537 A BE 490537A BE 490537D A BE490537D A BE 490537DA BE 490537 A BE490537 A BE 490537A
- Authority
- BE
- Belgium
- Prior art keywords
- plane
- axis
- envelope
- light
- document
- Prior art date
Links
- 238000005286 illumination Methods 0.000 claims description 4
- 238000009432 framing Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Facsimile Scanning Arrangements (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE490537A true BE490537A (enrdf_load_html_response) |
Family
ID=135230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE490537D BE490537A (enrdf_load_html_response) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE490537A (enrdf_load_html_response) |
-
0
- BE BE490537D patent/BE490537A/fr unknown
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