GB810256A - Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light - Google Patents

Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light

Info

Publication number
GB810256A
GB810256A GB17323/57A GB1732357A GB810256A GB 810256 A GB810256 A GB 810256A GB 17323/57 A GB17323/57 A GB 17323/57A GB 1732357 A GB1732357 A GB 1732357A GB 810256 A GB810256 A GB 810256A
Authority
GB
United Kingdom
Prior art keywords
source
reflector
lens
varying
light
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
GB17323/57A
Inventor
Luen-Wai Yu
Kar-Tung Lee
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.)
SUNBEAM Manufacturing Co Ltd
Original Assignee
SUNBEAM Manufacturing Co 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 SUNBEAM Manufacturing Co Ltd filed Critical SUNBEAM Manufacturing Co Ltd
Priority to GB17323/57A priority Critical patent/GB810256A/en
Publication of GB810256A publication Critical patent/GB810256A/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
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • F21V14/085—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters in portable lighting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

810,256. Controlling light emission. SUNBEAM MANUFACTURING CO. Ltd. May 31, 1957, No. 17323/57. Class 75(4) For varying the light emitted by a source e.g. the bulb 4 of an electric torch, a lens is provided having a central convex portion 9 and an annular plane portion 10, in conjunction with a reflector 11 shaped so as to direct the rays through the annular portion in a concentrated bean and an opaque member 12 movable to cut off the rays from the light source to the reflector. The lens is spaced from the light source so that the convex portion 9 produces a divergent beam. The opaque member may be of frusto-conical or of cylindrical shape and may be formed internally as a reflector The lens may be in one piece or may consist of a sheet of transparent material to which a central lenticular portion is attached. For changing the position of the opaque membr 12, it may be connected to an L-shaped strip 13 provided with a knob 15 movable in a slit in the side of the casing 1 of the torch.
GB17323/57A 1957-05-31 1957-05-31 Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light Expired GB810256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17323/57A GB810256A (en) 1957-05-31 1957-05-31 Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17323/57A GB810256A (en) 1957-05-31 1957-05-31 Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light

Publications (1)

Publication Number Publication Date
GB810256A true GB810256A (en) 1959-03-11

Family

ID=10093164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17323/57A Expired GB810256A (en) 1957-05-31 1957-05-31 Improvements in or relating to means for varying the optical nature of a beam emitted by a source of light

Country Status (1)

Country Link
GB (1) GB810256A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426308A (en) * 1993-05-28 1995-06-20 Lesco, Inc. Ultraviolet curing device having movable reflector
GB2305718A (en) * 1995-09-27 1997-04-16 Fee Tat Holdings Hk Limited Lamp with sliding reflector
WO2002014738A1 (en) * 2000-08-11 2002-02-21 The Brinkmann Corporation Led flashlight
WO2003004932A1 (en) * 2001-06-29 2003-01-16 Mellert Slt Gmbh & Co. Kg Pocket lamp
US6979104B2 (en) 2001-12-31 2005-12-27 R.J. Doran & Co. LTD LED inspection lamp
US7145649B2 (en) 2000-12-21 2006-12-05 Brasscorp Limited Method of producing an ultra-violet or near ultra-violet light source for non-destructive inspection or testing
US7204606B2 (en) 2001-12-31 2007-04-17 R J Doran & Co Ltd. LED inspection lamp and LED spot light
US7214952B2 (en) 2003-07-07 2007-05-08 Brasscorp Limited LED lamps and LED driver circuits for the same
US7553051B2 (en) 2004-03-18 2009-06-30 Brasscorp Limited LED work light
US7670030B2 (en) 2006-02-13 2010-03-02 Brasscorp Limited Reflectors, reflector/LED combinations, and lamps having the same
US7708426B2 (en) 2002-03-01 2010-05-04 Eveready Battery Company, Inc. Rechargeable flashlight
US7758204B2 (en) 2006-01-26 2010-07-20 Brasscorp Limited LED spotlight
US9566024B2 (en) 2008-05-22 2017-02-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11147482B2 (en) 2008-03-25 2021-10-19 St. Louis Medical Devices, Inc. Method and system for non-invasive blood glucose measurement using signal change of the non-glucose components induced by the presence of glucose

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426308A (en) * 1993-05-28 1995-06-20 Lesco, Inc. Ultraviolet curing device having movable reflector
GB2305718A (en) * 1995-09-27 1997-04-16 Fee Tat Holdings Hk Limited Lamp with sliding reflector
WO2002014738A1 (en) * 2000-08-11 2002-02-21 The Brinkmann Corporation Led flashlight
US6932490B2 (en) * 2000-08-11 2005-08-23 The Brinkmann Corporation LED flashlight
US7152993B2 (en) 2000-08-11 2006-12-26 The Brinkmann Corporation LED flashlight
US7145649B2 (en) 2000-12-21 2006-12-05 Brasscorp Limited Method of producing an ultra-violet or near ultra-violet light source for non-destructive inspection or testing
WO2003004932A1 (en) * 2001-06-29 2003-01-16 Mellert Slt Gmbh & Co. Kg Pocket lamp
US6979104B2 (en) 2001-12-31 2005-12-27 R.J. Doran & Co. LTD LED inspection lamp
US7204606B2 (en) 2001-12-31 2007-04-17 R J Doran & Co Ltd. LED inspection lamp and LED spot light
US9599563B2 (en) 2001-12-31 2017-03-21 Jack Brass LED inspection lamp and LED spotlight
US7568816B2 (en) 2001-12-31 2009-08-04 R.J. Doran & Co. Ltd. LED inspection lamp and LED spot light
US7708426B2 (en) 2002-03-01 2010-05-04 Eveready Battery Company, Inc. Rechargeable flashlight
US7214952B2 (en) 2003-07-07 2007-05-08 Brasscorp Limited LED lamps and LED driver circuits for the same
US7490951B2 (en) 2003-07-07 2009-02-17 Brasscorp Limited LED lamps and LED driver circuits for the same
US9297509B2 (en) 2004-03-18 2016-03-29 Brasscorp Limited LED work light
US7553051B2 (en) 2004-03-18 2009-06-30 Brasscorp Limited LED work light
US7758204B2 (en) 2006-01-26 2010-07-20 Brasscorp Limited LED spotlight
US7670030B2 (en) 2006-02-13 2010-03-02 Brasscorp Limited Reflectors, reflector/LED combinations, and lamps having the same
US11147482B2 (en) 2008-03-25 2021-10-19 St. Louis Medical Devices, Inc. Method and system for non-invasive blood glucose measurement using signal change of the non-glucose components induced by the presence of glucose
US9877670B2 (en) 2008-05-22 2018-01-30 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10959650B2 (en) 2008-05-22 2021-03-30 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9788764B2 (en) 2008-05-22 2017-10-17 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9814415B2 (en) 2008-05-22 2017-11-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9579049B2 (en) 2008-05-22 2017-02-28 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10070809B2 (en) 2008-05-22 2018-09-11 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10080515B2 (en) 2008-05-22 2018-09-25 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9629576B2 (en) 2008-05-22 2017-04-25 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10973442B2 (en) 2008-05-22 2021-04-13 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11076781B2 (en) 2008-05-22 2021-08-03 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9566024B2 (en) 2008-05-22 2017-02-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11553859B2 (en) 2008-05-22 2023-01-17 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11986291B2 (en) 2008-05-22 2024-05-21 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US12036019B2 (en) 2008-05-22 2024-07-16 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis

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