GB359692A - Improvements in and relating to prismatic light distributing glassware - Google Patents

Improvements in and relating to prismatic light distributing glassware

Info

Publication number
GB359692A
GB359692A GB30757/30A GB3075730A GB359692A GB 359692 A GB359692 A GB 359692A GB 30757/30 A GB30757/30 A GB 30757/30A GB 3075730 A GB3075730 A GB 3075730A GB 359692 A GB359692 A GB 359692A
Authority
GB
United Kingdom
Prior art keywords
glassware
relating
holophane
street
prisms
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
GB30757/30A
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 GB30757/30A priority Critical patent/GB359692A/en
Publication of GB359692A publication Critical patent/GB359692A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/02Refractors for light sources of prismatic shape

Abstract

359,692. Transparencies. HOLOPHANE, Ltd. and ENGLISH, S., Holophane House, Elverton Street, Vincent Square, London. Oct. 14, 1930, No. 30757. [Class 20 (iii).] Prismatic glass panels for use with an artificial light source in street refractors, bulkhead fittings, and the like, are provided with internal prisms having a face 2, 8, which is inactive as regards incident beams 3 perpendicular to the panel, the width of the face 1, 2 being so chosen that the path of the refracted ray 7 nearest the face 2, 8 misses the point 8. In a modification, the face 1, 2 may be slightly curved subject to the same requirement. Three examples are given for prisms of different angles.
GB30757/30A 1930-10-14 1930-10-14 Improvements in and relating to prismatic light distributing glassware Expired GB359692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30757/30A GB359692A (en) 1930-10-14 1930-10-14 Improvements in and relating to prismatic light distributing glassware

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30757/30A GB359692A (en) 1930-10-14 1930-10-14 Improvements in and relating to prismatic light distributing glassware

Publications (1)

Publication Number Publication Date
GB359692A true GB359692A (en) 1931-10-29

Family

ID=10312656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30757/30A Expired GB359692A (en) 1930-10-14 1930-10-14 Improvements in and relating to prismatic light distributing glassware

Country Status (1)

Country Link
GB (1) GB359692A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486558A (en) * 1947-08-07 1949-11-01 Holophane Co Inc Street lighting luminaire and refractor therefor
US2886698A (en) * 1955-04-26 1959-05-12 Corning Glass Works Street lighting luminaire
EP1089094A1 (en) * 1999-09-30 2001-04-04 Valeo Vision Method of manufacturing refractive elements and refractive elements for an illumination device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486558A (en) * 1947-08-07 1949-11-01 Holophane Co Inc Street lighting luminaire and refractor therefor
US2886698A (en) * 1955-04-26 1959-05-12 Corning Glass Works Street lighting luminaire
EP1089094A1 (en) * 1999-09-30 2001-04-04 Valeo Vision Method of manufacturing refractive elements and refractive elements for an illumination device
FR2799268A1 (en) * 1999-09-30 2001-04-06 Valeo Vision Process for manufacturing dioptric elements and dioptric elements for lighting device

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