GB943713A - Spot light unit - Google Patents
Spot light unitInfo
- Publication number
- GB943713A GB943713A GB4637261A GB4637261A GB943713A GB 943713 A GB943713 A GB 943713A GB 4637261 A GB4637261 A GB 4637261A GB 4637261 A GB4637261 A GB 4637261A GB 943713 A GB943713 A GB 943713A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light unit
- spot light
- feo
- al2o3
- sio2
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Glass Compositions (AREA)
Abstract
Two formulae are given for heat ray absorbing glass for use in studio lighting apparatus. I. P2O5 67.86%; SiO2 6.35%; B2O3 4.10%; Al2O3 16.58%; ZnO 3.06%; FeO 2.05%. II. P2O5 70.37%; SiO2 5.98%; B2O3 3.83%; Al2O3 14.45%; ZnO 3.95%; FeO 1.42%. Wire gauze or mesh may be embedded in the glass and it may be coated with a heat conducting film such as a metallic layer or oxide layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10160 | 1960-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB943713A true GB943713A (en) | 1963-12-04 |
Family
ID=11464691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4637261A Expired GB943713A (en) | 1960-12-31 | 1961-12-28 | Spot light unit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB943713A (en) |
-
1961
- 1961-12-28 GB GB4637261A patent/GB943713A/en not_active Expired
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