FR456592A - écran diffuseur de lumière - Google Patents
écran diffuseur de lumièreInfo
- Publication number
- FR456592A FR456592A FR456592A FR456592DA FR456592A FR 456592 A FR456592 A FR 456592A FR 456592 A FR456592 A FR 456592A FR 456592D A FR456592D A FR 456592DA FR 456592 A FR456592 A FR 456592A
- Authority
- FR
- France
- Prior art keywords
- light diffusing
- diffusing screen
- screen
- light
- diffusing
- 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
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT456592X | 1912-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR456592A true FR456592A (fr) | 1913-08-29 |
Family
ID=1496369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR456592A Expired FR456592A (fr) | 1912-03-12 | 1913-03-10 | écran diffuseur de lumière |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR456592A (fr) |
-
1913
- 1913-03-10 FR FR456592A patent/FR456592A/fr not_active Expired
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