Robert D Lieberman

US Patent:

6446467, Sep 10, 2002

Filed:

Jul 29, 1997

Appl. No.:

08/902415

Inventors:

Robert A. Lieberman - Torrance CA
Edgar A. Mendoza - Redondo Beach CA
David Mintzer - Santa Monica CA

Assignee:

Physical Optics Corporation - Torrance CA

International Classification:

C03B 802

US Classification:

65 172, 65395, 359599, 359707, 423338

Abstract:

A holographic light shaping diffuser (LSD) is formed from a monolithic glass material by recording light shaping structures (sometimes collectively known as âspeckleâ, particularly when the structures extend into the interior of the diffuser) in the glass material during its formation. A volume LSD may be produced by the photolithographic writing or other imaging of light shaping structures in a photosensitive glass material. Alternatively, a surface LSD may be produced by this imaging process or by embossing light shaping structures onto a high quality optical glass or by embossing a light shaping structures on a glass film layer coated onto a substrate. Both types of diffusers control the angular spread of transmitted light while homogenizing otherwise spatially noisy light sources such as LCDs and filamented light sources and while maintaining damage thresholds consistent with any glass optical element. The LSD has a transmission efficiency of over 90% from the Ultraviolet wavelengths through the physical spectrum and into the near-infrared. Moreover, because the LSD is a true glass, it is capable of withstanding temperatures well beyond glass transition temperatures of plastic LSDs, can be formed in a convex or concave surfaces through conventional molding, grinding, or polishing techniques, and can be coated by hot-coating techniques.

US Patent:

6650810, Nov 18, 2003

Filed:

Aug 15, 2000

Appl. No.:

09/639063

Inventors:

Robert A. Lieberman - Torrance CA
John D Prohaska - Millbury MA
Lothar U Kempen - Redondo Beach CA

Assignee:

Physical Optics Corporation - Torrance CA

International Classification:

G02B 634

US Classification:

385 37, 385 10, 385 15, 385 31, 385 32, 385124, 356302, 356303, 356328

Abstract:

A tunable optical filter for simulating the waveband spectrums of selected substances. The filter includes an optical waveguide with a core material for transmitting light energy and a nominal core refractive index for the core material. Predetermined periodic variations are formed in the core material of the optical waveguide between the input and output ends that alter the core refractive index of the waveguide at the location of the periodic variations. Depending upon the periodic variations, the waveguide produces a predetermined reference waveband spectrum output that matches the waveband spectrum of a selected substance. A modulator is coupled to the waveguide to selectively modulate the periodic variations to intermittently shift the reference waveband spectrum output to fine tune the filter and reduce signal noise. The filter is useful as a reference cell for correlation spectroscopy, DIAL LIDAR, equipment calibration, and other uses where a predetermined or known waveband spectrum is useful or desirable.

US Patent:

6667807, Dec 23, 2003

Filed:

Mar 30, 2001

Appl. No.:

09/823858

Inventors:

Robert A. Lieberman - Torrance CA

Assignee:

Optech Ventures, LLC - Torrance CA

International Classification:

G01N 2155

US Classification:

356445, 356136

Abstract:

A surface plasmon resonance device includes a metal thin film, a dielectric thin film on an optical member and, in addition, an electro-optically active thin film either between the metal thin film and the dielectric thin film or between the optical member and the metal thin film. The electro-optically active thin film is subject to a voltage which is varied to tune the resonance condition of the device.

US Patent:

6714711, Mar 30, 2004

Filed:

Oct 10, 2000

Appl. No.:

09/685387

Inventors:

Robert A. Lieberman - Torrance CA
Edgar A. Mendoza - Redondo Beach CA
Yevgeniy Durets - Long Beach CA

Assignee:

Optech Ventures, LLC - Torrance CA

International Classification:

G02B 602

US Classification:

385124, 385901, 362552

Abstract:

Methods and apparatus for producing an optical waveguide illuminator are disclosed. By controlling the propagation of light in the core and cladding regions of the waveguide, distributed light emission along a length of an optical fiber or along a planar waveguide surface can be achieved by varying the core/cladding refractive index ratio and introducing light scattering centers in the core.

US Patent:

6802188, Oct 12, 2004

Filed:

Jul 28, 2000

Appl. No.:

09/627983

Inventors:

Robert A. Lieberman - Torrance CA
Edgar A. Mendoza - Redondo Beach CA
David Mintzer - Santa Monica CA

Assignee:

Physical Optics Corporation - Torrance CA

International Classification:

C03B 802

US Classification:

65 172, 423338

Abstract:

A partially modified photosensitive monolithic oxide glass apparatus formed through photolithographic imaging. The apparatus may be either a volume apparatus or a layer apparatus. Both types of apparatus may be used to diffuse light in predetermined directions or shapes. The monolithic oxide glass apparatus is capable of withstanding temperatures well beyond glass transition temperatures of plastic light shaping devices and can be formed in convex or concave surfaces through conventionally molding grinding or polishing techniques and can be coated by hot-coating techniques.

US Patent:

6833920, Dec 21, 2004

Filed:

Jan 12, 2002

Appl. No.:

10/046620

Inventors:

William Rassman - Los Angeles CA
David Ralin - San Gabriel CA
Robert A. Lieberman - Torrance CA
Lothar U. Kempen - Redondo Beach CA

Assignee:

Maven Technologies LLC - Los Angeles CA

International Classification:

G01J 400

US Classification:

356369, 356445, 436517, 436805

Abstract:

Apparatus for acquiring an image of a specimen comprising a cassette having an optical portion holding a specimen array on a TIR surface and being removably matable to a processing portion having a polarized light beam source and a processing polarization-sensitive portion to image the spatially distributed charges in polarization of the specimen array. In one form the array optical portion comprises a transparent slide having a bottom surface with first and second gratings located to direct polarized light to the TIR surface and to direct light reflected by that (TIR) surface to an imager, respectively. The apparatus may include a flow cell integral with the optical portion as well as means for selecting the direction and wavelength of the polarized light.

US Patent:

6882420, Apr 19, 2005

Filed:

May 7, 2004

Appl. No.:

10/841988

Inventors:

William Rassman - Los Angeles CA, US
David Ralin - South Pasadena CA, US
Robert A. Lieberman - Torrance CA, US
Lothar U. Kempen - Redondo Beach CA, US

Assignee:

Maven Technologies, LLC - Los Angeles CA

International Classification:

G01J004/00
G01N033/557

US Classification:

356369, 356445, 436517, 436805

Abstract:

Apparatus for acquiring an image of a specimen comprising a cassette having an optical portion holding a specimen array on a TIR surface and being removably matable to a processing portion having a polarized light beam source and a processing polarization-sensitive portion to image the spatially distributed charges in polarization of the specimen array. In one form the array optical portion comprises a transparent slide having a bottom surface with first and second gratings located to direct polarized light to the TIR surface and to direct light reflected by that (TIR) surface to an imager, respectively. The apparatus may include a flow cell integral with the optical portion as well as means for selecting the direction and wavelength of the polarized light.

US Patent:

6954142, Oct 11, 2005

Filed:

Oct 31, 2001

Appl. No.:

10/002759

Inventors:

Robert A. Lieberman - Torrance CA, US
Thomas C. Forrester - Hacienda Heights CA, US

International Classification:

G08B029/00
G08B001/08

US Classification:

340509, 340511, 340517, 340521, 34053917, 34053922

Abstract:

A sensor system in which a sensor suite has a locally located field sensing unit (FSU) that converts and evaluates sensor information using sensor fusion algorithms and is thereby able to send qualitative low-bandwidth, low power usage signals to a remote command post.