FR737974A - Improvements to illuminated projectors - Google Patents
Improvements to illuminated projectorsInfo
- Publication number
- FR737974A FR737974A FR737974DA FR737974A FR 737974 A FR737974 A FR 737974A FR 737974D A FR737974D A FR 737974DA FR 737974 A FR737974 A FR 737974A
- Authority
- FR
- France
- Prior art keywords
- projectors
- illuminated
- illuminated projectors
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2461—Illumination
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR737974T | 1931-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR737974A true FR737974A (en) | 1932-12-19 |
Family
ID=9132037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR737974D Expired FR737974A (en) | 1931-09-30 | 1931-09-30 | Improvements to illuminated projectors |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR737974A (en) |
-
1931
- 1931-09-30 FR FR737974D patent/FR737974A/en not_active Expired
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