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US5481445A Expired / Lapsed US ⏱️ 0.0 years remaining

Transflection reflector having controlled reflected and transmitted light distribution

Assignee: ALP Lighting and Ceiling Products Inc
•
Filing: 1994-02-15
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Granted: 1996-01-02
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Expires: 2014-02-15
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Abstract

Abstract A transflection reflector includes a body for simultaneously reflecting and transmitting light rays. The body is formed by a plurality of layers of a polymeric reflective material and has reflected rays at each interface between adjacent ones of the multiple layers. The body is both selectively configured and positioned relative to a light source for a predetermined distribution of reflected and transmitted rays.

Inventors

  • 👤 Ronald L. Sitzema
  • 👤 Dale A. Troppman
  • 👤 Gregg A. Motter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:08
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/22; F21V7/24; F21W; F21W2131/00; F21W2131/10; F21W2131/103

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 168 words
In combination, a transflection reflector and an ornamental roadway luminaire including an upper body and a lower body, said ornamental roadway luminair including a refractor for said lower body and an acorn-shaped top for said upper body and a light source generally centrally disposed within said lower body refractor, said transflection reflector comprising: a transflection reflector body for simultaneously reflecting and transmitting light rays, said body being formed by a plurality of layers of a polymeric reflective material with adjacent layers having a different index of refraction and having reflected rays at each interface between adjacent ones of said multiple layers; and said transflection reflector body being selectively positioned above the light source and below said acorn-shaped top, said transflection reflector body having a substantially flat upper section for reflecting light rays downwardly into a lower 2/3 portion of said lower body refractor and an upper peaked section disposed above the light source for reflecting light rays downwardly into a lower 1/3 portion of said lower body refractor.
Claim 2
Dependent Claim 168 words
In combination, a transflection reflector and an ornamental roadway luminaire including an upper body and a lower body, said ornamental roadway luminair including a refractor for said lower body and an acorn-shaped top for said upper body and a light source generally centrally disposed within said lower body refractor, said transflection reflector comprising: a transflection reflector body for simultaneously reflecting and transmitting light rays, said body being formed by a plurality of layers of a polymeric reflective material with adjacent layers having a different index of refraction and having reflected rays at each interface between adjacent ones of said multiple layers; and said transflection reflector body being selectively positioned above the light source and below said acorn-shaped top, said transflection reflector body having a substantially flat upper section for reflecting light rays downwardly into a lower 2/3 portion of said lower body refractor and an upper peaked section disposed above the light source for reflecting light rays downwardly into a lower 1/3 portion of said lower body refractor.
Claim 3
Dependent Claim 48 words
In combination, a transflection reflector and an ornamental roadway luminaire as recited in claim 1 wherein said transflection reflector body provides a spatially spread array of light rays having less concentrated illumination in each ray and increases an apparent lamp image, thereby reducing glare from the reflector surface.
Claim 4
Dependent Claim 32 words
A transflection reflector as recited in claim 1 wherein said transflection reflector body is selectively configured to provide reflection of intercepted light rays in a range between 25 percent to 75 percent.
Claim 5
Dependent Claim 22 words
A transflection reflector as recited in claim 1 wherein said plurality of layers is in a range between 500 and 5500 layers.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-01-01 1999-07-03 2000-01-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-01-01 2003-07-03 2004-01-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-01-01 2007-07-03 2008-01-02 $7700.00 Window Closed / Lapsed

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