GB709481A - Improvements in and relating to light controlling glassware - Google Patents

Improvements in and relating to light controlling glassware

Info

Publication number
GB709481A
GB709481A GB9930/51A GB993051A GB709481A GB 709481 A GB709481 A GB 709481A GB 9930/51 A GB9930/51 A GB 9930/51A GB 993051 A GB993051 A GB 993051A GB 709481 A GB709481 A GB 709481A
Authority
GB
United Kingdom
Prior art keywords
lenticules
glassware
outline
circular
semi
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
Application number
GB9930/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Holophane Ltd
Original Assignee
Holophane Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Holophane Ltd filed Critical Holophane Ltd
Priority to GB9930/51A priority Critical patent/GB709481A/en
Publication of GB709481A publication Critical patent/GB709481A/en
Expired legal-status Critical Current

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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

709,481. Light-controlling glassware. HOLOPHANE, Ltd., and HOLMES, J. G. March 21, 1952 [April 27, 1951], No. 9930/51. Class 75 (2) Light controlling glassware such as a car lamp cover glass is formed with a surface pattern of closely spaced convex lenticules of part circular outline. The lenticules may be spherical and of semi-circular or segmental outline as shown in Figs. 1 and 3, the resultant beam cross-section being shown in Figs, 1b and 3b. Fig. 2b shows the beam cross-section for lenticules of greater than semi-circular outline. Fig. 4 shows an arrangement of different sized spherical semi-circular outline lenticules designed to give a theoretical polar curve for the resultant beam as shown in Fig. 4f. The pattern of lenticules may comprise lenticules of different sizes and outline covering all or part of the glassware, the uncovered areas being left plain or rendered diffusing. The lenticules may be arranged on the same or opposite faces of the glassware and may be combined with' circular prisms.
GB9930/51A 1951-04-27 1951-04-27 Improvements in and relating to light controlling glassware Expired GB709481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9930/51A GB709481A (en) 1951-04-27 1951-04-27 Improvements in and relating to light controlling glassware

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9930/51A GB709481A (en) 1951-04-27 1951-04-27 Improvements in and relating to light controlling glassware

Publications (1)

Publication Number Publication Date
GB709481A true GB709481A (en) 1954-05-26

Family

ID=9881404

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9930/51A Expired GB709481A (en) 1951-04-27 1951-04-27 Improvements in and relating to light controlling glassware

Country Status (1)

Country Link
GB (1) GB709481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447515A1 (en) * 1979-01-25 1980-08-22 Konen Heinz PLURIFUNCTIONAL REAR LANTERN FOR ROAD VEHICLES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447515A1 (en) * 1979-01-25 1980-08-22 Konen Heinz PLURIFUNCTIONAL REAR LANTERN FOR ROAD VEHICLES

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