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US1153446A - Lamp and reflector. - Google Patents

Lamp and reflector. Download PDF

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Publication number
US1153446A
US1153446A US66459211A US1911664592A US1153446A US 1153446 A US1153446 A US 1153446A US 66459211 A US66459211 A US 66459211A US 1911664592 A US1911664592 A US 1911664592A US 1153446 A US1153446 A US 1153446A
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United States
Prior art keywords
reflector
light
lamp
rays
parabolic
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 - Lifetime
Application number
US66459211A
Inventor
Joseph T Roffy
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.)
NERNST LAMP Co
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NERNST LAMP Co
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 NERNST LAMP Co filed Critical NERNST LAMP Co
Priority to US66459211A priority Critical patent/US1153446A/en
Application granted granted Critical
Publication of US1153446A publication Critical patent/US1153446A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source

Definitions

  • This invention relates to lamps and particularly to that class in which it is desired to provide a high degree of illumination within a concentrated field.
  • lamps have been constructed with lenses and reflectors which, in a measure, conformed to the above requirements but, in so far as I am aware, no lamp has been constructed prior to my invention wherein practically all the light rays are collected and projected in substantially parallel lines to provide a restricted but brilliant field.
  • the single embodiment of my invention selected for illustrational purposes is here shown as comprising a lamp shell or casing 1, provided with a transparent screen 2, a
  • the reflector 5 is adapted to be secured to the casing 1 by any suitable means as, for example, by a bracket 6.
  • the compound reflector 5 consists of an intermediate parabolic portion 7, a central portion 8, the surface of which is in the form of a generated curve and an outer portion 9, the surface of which is in the form of a generated curve.
  • the portion 8 of the reflector is raised to a point in axial alinement with the light Serial N 0. 664,592.
  • the reflector 4 is positioned in front of the light source, so as to collect rays of. light to Patented Sept. T41, 1915. v
  • a reflector comprising an intermediate portion of parabolic form .and two difl'erently curved portions, and a light source located at the focal point of said parabolic portion, one of said curved portions being formed so as to reflect impinging rays of light upon the other curved portion.
  • a reflector comprising an intermediate portion of parabolic form and two difli'erently curved portions, and a light source located at the focal point of said parabolic portion, one of said curved portions being formed so as to reflect impinging rays of light upon the other curved portion, theother curved portion being formed so that rays'of light from the first curved portion will be reflected into space in parallel lines.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

J. T. ROFFY.
LAMP AND REFLECTOR.
APPLICATION FILED DEC-8, 1911.
Patented Sept. 14, 1915.
HIS ATTORNEY IN FACT.
JOSEPH T. ROFTY, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOB, TO NERNS'I. LAMP COMPANY, A CORPORATION OF PENNSYLVANIA.
LAMP AND nnrii'nc'ron.
inseam.
To all whom it may concern.
Be it known that L-Josnrn T. Rorra', a subject of the Emperor of Austria-Hungary, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Lamps and Reflectors, of which the follow ing is a specification. v
This invention relates to lamps and particularly to that class in which it is desired to provide a high degree of illumination within a concentrated field.
In search lights as for example, those used on motor vehicles, it is desirable to so construct the lamp that a beam of light will be provided, the cross-sectional area of which will be restricted but the rays of which will be so concentrated that a beam of great brilliancy will be provided.
Hitherto, lamps have been constructed with lenses and reflectors which, in a measure, conformed to the above requirements but, in so far as I am aware, no lamp has been constructed prior to my invention wherein practically all the light rays are collected and projected in substantially parallel lines to provide a restricted but brilliant field.
In the drawings I have illustrated a sectional view of a lamp constructed in accordance with my invention.
The single embodiment of my invention selected for illustrational purposes is here shown as comprising a lamp shell or casing 1, provided with a transparent screen 2, a
, light medium 3, a semi-spherical reflector. 4,
and a compound reflector 5. The reflector 5 is adapted to be secured to the casing 1 by any suitable means as, for example, by a bracket 6.
By reference to the drawings it will be observed that the compound reflector 5 consists of an intermediate parabolic portion 7, a central portion 8, the surface of which is in the form of a generated curve and an outer portion 9, the surface of which is in the form of a generated curve.
The portion 8 of the reflector is raised to a point in axial alinement with the light Serial N 0. 664,592.
source 3, and the semi-spherical reflector 4. The reflector 4 is positioned in front of the light source, so as to collect rays of. light to Patented Sept. T41, 1915. v
reflect them upon the portions 7 and 8.
Those rays of light striking the parabolic portion 7 will be reflected-from-the lamp in approximately horizontal lines when the lamp is in the position shown in the figure. Rays of light thrown upon the portion 8 either directly from the light source or from the reflector 4 will be redeflected upon the portion 9 and from the reflector 9 they will be paralleled with the rays of light projected through the screen 2 from the parabolic portion ofthe reflector 5.
It will be apparent that all of the light rays, or substantially all of them, will be collected by the reflector 5 and the reflector 4, and reflected in such a way that the beam Wlll consist of rays substantially parallel in-v stead of divergent rays resulting from the usual type of reflector. As the light rays are concentrated within a restricted field, it is obvious that the beam will be more intense within the confined area.
What I claim and desire to secure by Letters Patent is:
1. The combination of a reflector comprising an intermediate portion of parabolic form .and two difl'erently curved portions, and a light source located at the focal point of said parabolic portion, one of said curved portions being formed so as to reflect impinging rays of light upon the other curved portion.
2. The combination of a reflector comprising an intermediate portion of parabolic form and two difli'erently curved portions, and a light source located at the focal point of said parabolic portion, one of said curved portions being formed so as to reflect impinging rays of light upon the other curved portion, theother curved portion being formed so that rays'of light from the first curved portion will be reflected into space in parallel lines.-
3. The combination of a reflector comprising an intermediate portion of parabolic form and two differently curved portions,
and a light source locatedat the focal point of said parabolic portion, one of said curvedportions being formed so as to reflect impinging rays of light upon the other curved portion, and a reflector facing the first mentioned reflector and in axial alinement therewith. i
In witness whereof, I have hereunto subscribed my name this 6th day of December,
GEO. J. TAYLOR, ADA ROMIG.
US66459211A 1911-12-08 1911-12-08 Lamp and reflector. Expired - Lifetime US1153446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US66459211A US1153446A (en) 1911-12-08 1911-12-08 Lamp and reflector.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66459211A US1153446A (en) 1911-12-08 1911-12-08 Lamp and reflector.

Publications (1)

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US1153446A true US1153446A (en) 1915-09-14

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524052A (en) * 1968-04-18 1970-08-11 Union Carbide Corp Fan-forming reflective optical system
US4320442A (en) * 1979-10-11 1982-03-16 Kollmorgen Technologies Corporation Annular illuminator
US4422135A (en) * 1979-10-11 1983-12-20 Kollmorgen Technologies Corporation Annular illuminator
US20030085642A1 (en) * 2001-07-20 2003-05-08 Pelka David G. Fluorescent light source
US6603243B2 (en) 2000-03-06 2003-08-05 Teledyne Technologies Incorporated LED light source with field-of-view-controlling optics
US6637924B2 (en) 2000-11-15 2003-10-28 Teledyne Lighting And Display Products, Inc. Strip lighting apparatus and method
US6722777B2 (en) * 2001-10-05 2004-04-20 Schefenacker Vision Systems Germany Gmbh & Co. Kg Reflector for a light assembly, such as a taillight, a headlight, or an interior light, of a motor vehicle
US6744960B2 (en) 2000-03-06 2004-06-01 Teledyne Lighting And Display Products, Inc. Lighting apparatus having quantum dot layer
US20050024880A1 (en) * 2001-10-17 2005-02-03 Holger Moench Illumination unit

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524052A (en) * 1968-04-18 1970-08-11 Union Carbide Corp Fan-forming reflective optical system
US4320442A (en) * 1979-10-11 1982-03-16 Kollmorgen Technologies Corporation Annular illuminator
US4422135A (en) * 1979-10-11 1983-12-20 Kollmorgen Technologies Corporation Annular illuminator
US6603243B2 (en) 2000-03-06 2003-08-05 Teledyne Technologies Incorporated LED light source with field-of-view-controlling optics
US6744960B2 (en) 2000-03-06 2004-06-01 Teledyne Lighting And Display Products, Inc. Lighting apparatus having quantum dot layer
US6637924B2 (en) 2000-11-15 2003-10-28 Teledyne Lighting And Display Products, Inc. Strip lighting apparatus and method
US20030085642A1 (en) * 2001-07-20 2003-05-08 Pelka David G. Fluorescent light source
US6784603B2 (en) 2001-07-20 2004-08-31 Teledyne Lighting And Display Products, Inc. Fluorescent lighting apparatus
US6722777B2 (en) * 2001-10-05 2004-04-20 Schefenacker Vision Systems Germany Gmbh & Co. Kg Reflector for a light assembly, such as a taillight, a headlight, or an interior light, of a motor vehicle
US20050024880A1 (en) * 2001-10-17 2005-02-03 Holger Moench Illumination unit
US7224107B2 (en) * 2001-10-17 2007-05-29 Koninklijke Philips Electronics, N.V. Illumination unit

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