FR972697A - Lunettes filtrantes - Google Patents
Lunettes filtrantesInfo
- Publication number
- FR972697A FR972697A FR972697DA FR972697A FR 972697 A FR972697 A FR 972697A FR 972697D A FR972697D A FR 972697DA FR 972697 A FR972697 A FR 972697A
- Authority
- FR
- France
- Prior art keywords
- filter glasses
- glasses
- filter
- 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
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/105—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having inhomogeneously distributed colouring
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/108—Colouring materials
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/16—Laminated or compound lenses
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR972697T | 1948-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR972697A true FR972697A (fr) | 1951-02-01 |
Family
ID=9516176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR972697D Expired FR972697A (fr) | 1948-09-02 | 1948-09-02 | Lunettes filtrantes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR972697A (fr) |
-
1948
- 1948-09-02 FR FR972697D patent/FR972697A/fr not_active Expired
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