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Elizabeth J Billmers

from Langhorne, PA
Age ~61

Elizabeth Billmers Phones & Addresses

  • 4 Tanglewood Dr, Langhorne, PA 19047 (215) 269-1687 (215) 269-1694
  • Trevose, PA
  • Lake Alfred, FL
  • Hazle Township, PA
  • Bensalem, PA
  • Buck, PA
  • 4 Tanglewood Dr, Langhorne, PA 19047 (215) 499-9506

Work

Company: Rls associates 1996 to 2014 Position: Senior scientist

Education

Degree: Graduate or professional degree

Emails

Industries

Research

Resumes

Resumes

Elizabeth Billmers Photo 1

Elizabeth Billmers

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Location:
4 Tanglewood Dr, Langhorne, PA 19047
Industry:
Research
Work:
Rls Associates 1996 - 2014
Senior Scientist

Business Records

Name / Title
Company / Classification
Phones & Addresses
Elizabeth Billmers
President
Rl Associates, Inc
Scientific Consultant
309 Floral Vale Blvd, Yardley, PA 19067
409 Floral Vale Blvd, Yardley, PA 19067
(215) 550-6453, (215) 579-2300

Publications

Us Patents

Wavelength Tunable Holographic Filter With Broad Acceptance Angle And Narrow Spectral Bandwidth

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US Patent:
7355768, Apr 8, 2008
Filed:
Aug 5, 2005
Appl. No.:
11/197796
Inventors:
Richard I. Billmers - Langhorne PA, US
Elizabeth J. Billmers - Langhorne PA, US
Mary E. Ludwig - Elkton MD, US
International Classification:
G02B 5/32
US Classification:
359 15, 359 19
Abstract:
A narrowband, tunable filter with a wide acceptance angle utilizes two holographic filter elements connected in series. The filter blocks light outside of a narrow spectral band of interest, while enabling light to be seen over a wide range of angles incident on the filter.

Monochromator Employing Single Grating Volume Holograms And Method Of Use

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US Patent:
7480048, Jan 20, 2009
Filed:
Apr 28, 2007
Appl. No.:
11/796290
Inventors:
Richard I. Billmers - Langhorne PA, US
Elizabeth J. Billmers - Langhorne PA, US
Mary E. Ludwig - Elkton MD, US
Joseph David Matchett - Lindenwold NJ, US
International Classification:
G01J 3/18
US Classification:
356334, 356328
Abstract:
The present invention is directed to a monochromator device which uses single grating volume holograms. The holograms collect light of varying wavelengths such as polychromatic light, and separate one particular wavelength of interest. A wide wavelength spectrum can be targeted, either by angularly tuning the holograms, or by using an array of holograms each of which is tuned to a different center wavelength. The large aperture and high angular dispersion of the volume holograms provides a higher light throughput than that of prior art monochromators. The present invention can be used anywhere that efficient separation of polychromatic light into its narrowband components is required. The monochromator may be placed immediately before a light source, or before other optical or signal processing devices to provide the filtered wavelength of light input to such devices.

System For Viewing Objects At A Fire Scene And Method Of Use

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US Patent:
7561255, Jul 14, 2009
Filed:
Apr 5, 2004
Appl. No.:
10/818148
Inventors:
Richard I. Billmers - Langhorne PA, US
Elizabeth J. Billmers - Langhorne PA, US
Vincent M. Contarino - Lusby MD, US
Rudolph Lucente - North Wales PA, US
Mary E. Ludwig - Newark DE, US
International Classification:
G01C 3/08
US Classification:
356 504, 356 501
Abstract:
A system and method for viewing objects at a fire scene allows fire fighters to view objects, including persons, in a smoke and fire filled environment. The present invention utilizes two different techniques to discriminate reflections from an object from scattered reflections from smoke and fire. In one embodiment of the invention, the coherent nature of laser light is employed to pick out objects. Another embodiment of the invention utilizes a time-gated approach to select reflections from objects which are located a specific distance from the laser transmitter.

Volume Holographic Filter With Broad Acceptance Angle And Narrow Spectral Bandwidth

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US Patent:
7839550, Nov 23, 2010
Filed:
Feb 1, 2008
Appl. No.:
12/012410
Inventors:
Richard I. Billmers - Langhorne PA, US
Elizabeth J. Billmers - Langhorne PA, US
Mary E. Ludwig - Hellertown PA, US
Joseph David Matchett - Mantua NJ, US
International Classification:
G02B 5/32
US Classification:
359 15, 359 19
Abstract:
A narrowband filter with a wide acceptance angle which utilizes two holographic filter elements connected in series. The filter blocks light outside of a narrow spectral band of interest, while enabling light to be seen over a wide range of angles incident on the filter.

System For Viewing An Object In A Visually Obscured Environment And Method Of Use

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US Patent:
8184270, May 22, 2012
Filed:
May 22, 2009
Appl. No.:
12/454752
Inventors:
Richard I. Billmers - Langhorne PA, US
Elizabeth J. Billmers - Langhorne PA, US
Mary E. Ludwig - Hellertown PA, US
International Classification:
G01C 3/08
US Classification:
356 504, 356 301, 356 401, 356 501, 356 51
Abstract:
A system and method for viewing an object in a visually obscured environment includes a laser for generating a beam of light which is directed at the object. A pulse generator generates a reference pulse which triggers the laser and also a triggers a range generator which generates a range window positioned at a desired range. A gated optical detector (1) receives reflected light from the object, (2) receives the range window from the range generator, and (3) produces a gated optical output which contains reflections from ranges corresponding with the range window. A display is connected to the gated optical detector for displaying the gated optical output. In one embodiment, the transmitted light beam is polarized, and the received light beam passes through a selectable polarizing filter. In another embodiment, a plurality of received reflected light returns are integrated into a combined image.

System For Viewing Objects At A Fire Scene And Method Of Use

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US Patent:
6724467, Apr 20, 2004
Filed:
Apr 17, 2003
Appl. No.:
10/417550
Inventors:
Richard I. Billmers - Langhorne PA, 19047
Elizabeth J. Billmers - Langhorne PA, 19047
Vincent M. Contarino - Lusby MD, 20657
Rudolph Lucente - North Wales PA, 19454
Mary E. Ludwig - Newark DE, 19713
International Classification:
G01C 308
US Classification:
356 504, 348 31, 348 83, 348164
Abstract:
A system and method for viewing objects at a fire scene allows fire fighters to view objects, including persons, in a smoke and fire filled environment. The present invention utilizes two different techniques to discriminate reflections from an object from scattered reflections from smoke and fire. In one embodiment of the invention, the coherent nature of laser light is employed to pick out objects. Another embodiment of the invention utilizes a time-gated approach to select reflections from objects which are located a specific distance from the laser transmitter.
Elizabeth J Billmers from Langhorne, PA, age ~61 Get Report