GB279162A - Improvements in and relating to prismatic reflectors - Google Patents

Improvements in and relating to prismatic reflectors

Info

Publication number
GB279162A
GB279162A GB18127/26A GB1812726A GB279162A GB 279162 A GB279162 A GB 279162A GB 18127/26 A GB18127/26 A GB 18127/26A GB 1812726 A GB1812726 A GB 1812726A GB 279162 A GB279162 A GB 279162A
Authority
GB
United Kingdom
Prior art keywords
prism
relating
opposite
light
flat
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
GB18127/26A
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.)
THOMAS WILLETT ROLPH
Original Assignee
THOMAS WILLETT ROLPH
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 THOMAS WILLETT ROLPH filed Critical THOMAS WILLETT ROLPH
Priority to GB18127/26A priority Critical patent/GB279162A/en
Publication of GB279162A publication Critical patent/GB279162A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

279,162. Holophane, Ltd., (Rolph, T. W.). July 20, 1926. Prisms.-A reflecting prism has an outer surface adapted to reflect the light three or more times and an inner refracting surface to increase the amount of light so reflected. The outer surfaces may be flat, as shown at 5 in Fig. 3, or some or all may be curved as shown in Fig. 8, in which flat surfaces 15 are combined with a circular surface 16. The inner refracting surface may comprise convex surfaces forming a depression 9 opposite the centre of each prism, with or without depressions 10, Fig. 8, opposite the ends of each prism.
GB18127/26A 1926-07-20 1926-07-20 Improvements in and relating to prismatic reflectors Expired GB279162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18127/26A GB279162A (en) 1926-07-20 1926-07-20 Improvements in and relating to prismatic reflectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18127/26A GB279162A (en) 1926-07-20 1926-07-20 Improvements in and relating to prismatic reflectors

Publications (1)

Publication Number Publication Date
GB279162A true GB279162A (en) 1927-10-20

Family

ID=10107116

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18127/26A Expired GB279162A (en) 1926-07-20 1926-07-20 Improvements in and relating to prismatic reflectors

Country Status (1)

Country Link
GB (1) GB279162A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407911A1 (en) * 1994-03-09 1995-09-14 Telefunken Microelectron Optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407911A1 (en) * 1994-03-09 1995-09-14 Telefunken Microelectron Optical system

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