FR523497A - Diaphragm vision device - Google Patents
Diaphragm vision deviceInfo
- Publication number
- FR523497A FR523497A FR523497A FR523497DA FR523497A FR 523497 A FR523497 A FR 523497A FR 523497 A FR523497 A FR 523497A FR 523497D A FR523497D A FR 523497DA FR 523497 A FR523497 A FR 523497A
- Authority
- FR
- France
- Prior art keywords
- diaphragm
- vision device
- vision
- diaphragm vision
- 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
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/16—Shades; shields; Obturators, e.g. with pinhole, with slot
- G02C7/165—Shades; shields; Obturators, e.g. with pinhole, with slot with stenopaeic apertures
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C3/00—Special supporting arrangements for lens assemblies or monocles
- G02C3/04—Arrangements for supporting by hand, e.g. lorgnette, Arrangements for supporting by articles
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR523497T | 1920-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR523497A true FR523497A (en) | 1921-08-18 |
Family
ID=8918651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR523497A Expired FR523497A (en) | 1920-09-01 | 1920-09-01 | Diaphragm vision device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR523497A (en) |
-
1920
- 1920-09-01 FR FR523497A patent/FR523497A/en not_active Expired
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