GB683124A - Improvements in or relating to light diffusing screens for use with illuminating means - Google Patents
Improvements in or relating to light diffusing screens for use with illuminating meansInfo
- Publication number
- GB683124A GB683124A GB15139/49A GB1513949A GB683124A GB 683124 A GB683124 A GB 683124A GB 15139/49 A GB15139/49 A GB 15139/49A GB 1513949 A GB1513949 A GB 1513949A GB 683124 A GB683124 A GB 683124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strips
- strip
- panels
- slots
- screen
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Finishing Walls (AREA)
Abstract
683,124. Light diffusing screens for lamps. FRANCO-BRITISH ELECTRICAL CO., Ltd. May 16, 1950 [June 7, 1949; Sept. 13, 1949; Sept. 16, 1949; Oct. 14, 1949], Nos. 15139/49, 23642/49, 23942/49 and 26452/49. Class 75(iv) A light-diffusing screen particularly for use in conjunction with luminescent electric discharge tubes has a cellular construction comprising intersecting strips of light transmitting material having panels 1, Fig. 1, rendered translucent, the narrow zones 2 between the panels 1 each having a slot 3 extending from the same longitudinal edge to the central longitudinal axis of the strip, the slots of the two sets A, B, Fig. 5, being entered one into the other. The strips may be of moulded plastic material and the translucent panels 1 formed by producing pyramidal or other projections or depressions, or flutings, on one surface of each strip. The ends of each strip have rabbets 4 which, when strips are joined end to end, are overlapped so that slots 5 therein are aligned, the joint being completed when a transverse strip is placed in the slot 5. Adhesive may, if desired, be applied between the rabbets 4. The strip may be of arcuate form for building a screen of semi-cylindrical form. Alternatively a screen may be built of strips as shown in Fig. 1 in engagement with strips having inclined slots. Reference has been directed by the Comptroller to Specifications 669,993 and 681,706.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB15139/49A GB683124A (en) | 1949-06-07 | 1949-06-07 | Improvements in or relating to light diffusing screens for use with illuminating means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB15139/49A GB683124A (en) | 1949-06-07 | 1949-06-07 | Improvements in or relating to light diffusing screens for use with illuminating means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB683124A true GB683124A (en) | 1952-11-26 |
Family
ID=10053731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15139/49A Expired GB683124A (en) | 1949-06-07 | 1949-06-07 | Improvements in or relating to light diffusing screens for use with illuminating means |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB683124A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102834168A (en) * | 2010-04-09 | 2012-12-19 | 迪特尔·沃尔兹 | Spray system and method for spraying a secondary fluid into a primary fluid |
-
1949
- 1949-06-07 GB GB15139/49A patent/GB683124A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102834168A (en) * | 2010-04-09 | 2012-12-19 | 迪特尔·沃尔兹 | Spray system and method for spraying a secondary fluid into a primary fluid |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NL7807274A (en) | LUMINESCENT FABRIC, LUMINESCENT DISPLAY WITH SUCH FABRIC AND LOW-PRESSURE MERCURY DISCHARGE LAMP WITH SUCH DISPLAY. | |
CA1022906A (en) | Fluorescent plastic controlled direction lamp | |
CA969909A (en) | Lighting fitting provided with at least two low-pressure mercury vapour discharge lamps | |
NL174368C (en) | LUMINESCENT SCREEN AND LOW-PRESSURE MERCURY DISCHARGE LAMP FITTED WITH SUCH A SCREEN. | |
NL179215C (en) | LUMINESCENT SCREEN, AND LOW-PRESSURE MERCURY DISCHARGE LAMP. | |
HU172230B (en) | High-pressure discharge lamp with metallo-haloid additional material | |
MX144230A (en) | IMPROVEMENTS TO THE DIFFUSING NOZZLE TO DISTRIBUTE THE AIR IN THE ROOMS | |
GB683124A (en) | Improvements in or relating to light diffusing screens for use with illuminating means | |
JPS5291578A (en) | High luminous discharge lamp | |
GB669993A (en) | Improvements in and relating to lighting fittings | |
JPS5291575A (en) | Dimming device | |
ES194463Y (en) | A LIGHTING APPARATUS FOR USE WITH U-SHAPED FLUORESCENT LAMPS. | |
US2205515A (en) | Combination translucent building block and house number | |
GB681706A (en) | Improvements in and relating to diffusing screens | |
GB653645A (en) | Improvements in or relating to the construction of lamp shades, and other hollow articles | |
NL7809771A (en) | DISCHARGE LAMP WITH HIGH LUMINOUS. | |
GB693097A (en) | Lighting fixture of louvre construction | |
USD219396S (en) | Filter panel for photographic lighting fixtures or the like | |
GB687844A (en) | Improvements in roof-lights and similar structures for use in building construction | |
ATA896877A (en) | LUMINAIRE WITH AT LEAST TWO FLUORESCENT LAMPS | |
GB1320598A (en) | Percussive photo flash lamp | |
GB753009A (en) | Improvements relating to road surfaces, pipe linings and similar structures and to reinforcement for use therein | |
JPS5416870A (en) | Fluorescent lamp using two type phosphorescent material combination | |
ES195963Y (en) | PLATE IN THE SHAPE OF A REFRACTIVE DIFFUSER, FOR FLUORESCENT LIGHT APPLIANCES. | |
GB652694A (en) | Improvements in or relating to projection screens for optical systems |