BE471571A - - Google Patents
Info
- Publication number
- BE471571A BE471571A BE471571DA BE471571A BE 471571 A BE471571 A BE 471571A BE 471571D A BE471571D A BE 471571DA BE 471571 A BE471571 A BE 471571A
- Authority
- BE
- Belgium
- Prior art keywords
- screens
- ring
- photographic
- attenuator
- corrector
- Prior art date
Links
- 239000000463 material Substances 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229920002160 Celluloid Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 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
- G03B27/545—Lamp housings; Illuminating means for enlargers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471571A true BE471571A (enEXAMPLES) |
Family
ID=121394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471571D BE471571A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE471571A (enEXAMPLES) |
-
0
- BE BE471571D patent/BE471571A/fr unknown
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