GB319661A - Improvements in or relating to optical systems for signal lamps - Google Patents

Improvements in or relating to optical systems for signal lamps

Info

Publication number
GB319661A
GB319661A GB27888/29A GB2788829A GB319661A GB 319661 A GB319661 A GB 319661A GB 27888/29 A GB27888/29 A GB 27888/29A GB 2788829 A GB2788829 A GB 2788829A GB 319661 A GB319661 A GB 319661A
Authority
GB
United Kingdom
Prior art keywords
light
lens
relating
optical systems
ring
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
GB27888/29A
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.)
Julius Pintsch AG
Original Assignee
Julius Pintsch AG
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 Julius Pintsch AG filed Critical Julius Pintsch AG
Publication of GB319661A publication Critical patent/GB319661A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1845—Optical systems, lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

319,661. Pintsch Akt.-Ges., J., Sept. 25,1928, [Convention date]. Lenses.-A signal lamp is fitted with a single lens 1 and a catadioptrical ring 2 the outer face of which is so constructed as to cause total reflection of light proceeding from a source of light 3 up to an angle of 180‹. The lens and ring may be cemented together at 4 and their axes may be at an angle to each other so as to project the beam of light along a curved or ascending railway track. The lens may be made aspherical or otherwise modified, and a concave reflector may be disposed behind the source of light. Reference has been directed by the Comptroller to Specification 23491/09.
GB27888/29A 1928-09-25 1929-09-13 Improvements in or relating to optical systems for signal lamps Expired GB319661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE319661X 1928-09-25

Publications (1)

Publication Number Publication Date
GB319661A true GB319661A (en) 1930-10-30

Family

ID=6152172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27888/29A Expired GB319661A (en) 1928-09-25 1929-09-13 Improvements in or relating to optical systems for signal lamps

Country Status (1)

Country Link
GB (1) GB319661A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930593C (en) * 1949-07-29 1955-07-21 Westinghouse Brake & Signal Device for generating a light beam
GB2306695A (en) * 1995-11-01 1997-05-07 Hewlett Packard Co Optical element for controlling the viewing angle of light emitted from an LED
EP1836071A1 (en) * 2004-12-30 2007-09-26 Gelcore LLC Traffic signal having a uniform light surface
EP2202455A1 (en) * 2008-12-23 2010-06-30 Defond Components Limited Collimation lens system for led
EP2202555A1 (en) * 2008-12-23 2010-06-30 Samsung Electronics Co., Ltd. Collimate lens assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930593C (en) * 1949-07-29 1955-07-21 Westinghouse Brake & Signal Device for generating a light beam
GB2306695A (en) * 1995-11-01 1997-05-07 Hewlett Packard Co Optical element for controlling the viewing angle of light emitted from an LED
GB2306695B (en) * 1995-11-01 1999-10-20 Hewlett Packard Co Peripheral optical element
EP1836071A1 (en) * 2004-12-30 2007-09-26 Gelcore LLC Traffic signal having a uniform light surface
EP1836071B1 (en) * 2004-12-30 2013-06-12 GE Lighting Solutions, LLC Traffic signal having a uniform light surface
US9291329B2 (en) 2004-12-30 2016-03-22 GE Lighting Solutions, LLC Traffic signal having a uniform light surface
EP2202455A1 (en) * 2008-12-23 2010-06-30 Defond Components Limited Collimation lens system for led
EP2202555A1 (en) * 2008-12-23 2010-06-30 Samsung Electronics Co., Ltd. Collimate lens assembly
US7929216B2 (en) 2008-12-23 2011-04-19 Samsung Electronics Co., Ltd. Collimate lens assembly

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