FR676679A - Porte-radiations - Google Patents
Porte-radiationsInfo
- Publication number
- FR676679A FR676679A FR676679DA FR676679A FR 676679 A FR676679 A FR 676679A FR 676679D A FR676679D A FR 676679DA FR 676679 A FR676679 A FR 676679A
- Authority
- FR
- France
- Prior art keywords
- radiation holder
- holder
- radiation
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K7/00—Lamps for purposes other than general lighting
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR676679T | 1928-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR676679A true FR676679A (fr) | 1930-02-26 |
Family
ID=9020024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR676679D Expired FR676679A (fr) | 1928-09-28 | 1928-09-28 | Porte-radiations |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR676679A (fr) |
| GB (1) | GB320019A (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE747917C (de) * | 1939-07-19 | 1944-10-20 | Optisches Beleuchtungssystem fuer Bildwerfer | |
| DD153933A1 (de) * | 1980-10-31 | 1982-02-10 | Ludwig Meier | Optisches system zur diaprojektion |
| GB8716285D0 (en) * | 1987-07-10 | 1987-08-19 | Medical Res Council | Light collecting device |
| DE10109592C2 (de) * | 2001-02-28 | 2003-10-30 | Zeiss Carl Jena Gmbh | Anordnung zum Erzeugen eines leuchtenden Feldes |
-
1928
- 1928-09-28 FR FR676679D patent/FR676679A/fr not_active Expired
-
1929
- 1929-09-30 GB GB29587/29A patent/GB320019A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB320019A (en) | 1930-12-18 |
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