US57602A - Improvement in fluid lenses - Google Patents
Improvement in fluid lenses Download PDFInfo
- Publication number
- US57602A US57602A US57602DA US57602A US 57602 A US57602 A US 57602A US 57602D A US57602D A US 57602DA US 57602 A US57602 A US 57602A
- Authority
- US
- United States
- Prior art keywords
- improvement
- fluid lenses
- lenses
- fluid
- 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 - Lifetime
Links
- 239000012530 fluid Substances 0.000 title 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/30—Pivoted housings or frames
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US57602A true US57602A (en) | 1866-08-28 |
Family
ID=2127141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US57602D Expired - Lifetime US57602A (en) | Improvement in fluid lenses |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US57602A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2525921A (en) * | 1947-11-19 | 1950-10-17 | Emeloid Co Inc | Plastic lens |
| US2868992A (en) * | 1945-02-12 | 1959-01-13 | George S Monk | Reactor viewing apparatus |
| US6350042B1 (en) * | 2000-12-11 | 2002-02-26 | Wei Cheng Lai | Projecting lamp |
| US11041596B1 (en) * | 2021-01-14 | 2021-06-22 | Yingping Zhang | Music arctic starry sky lamp |
-
0
- US US57602D patent/US57602A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2868992A (en) * | 1945-02-12 | 1959-01-13 | George S Monk | Reactor viewing apparatus |
| US2525921A (en) * | 1947-11-19 | 1950-10-17 | Emeloid Co Inc | Plastic lens |
| US6350042B1 (en) * | 2000-12-11 | 2002-02-26 | Wei Cheng Lai | Projecting lamp |
| US11041596B1 (en) * | 2021-01-14 | 2021-06-22 | Yingping Zhang | Music arctic starry sky lamp |
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