Paul W Morand

US Patent:

7396271, Jul 8, 2008

Filed:

Apr 26, 2005

Appl. No.:

11/113977

Inventors:

Eric Krisl - Santa Rosa CA, US
Abbas Lamouri - Aurora OH, US
Leonid Pekker - Santa Rosa CA, US
Paul Morand - Rohnert Park CA, US
Juris Sulcs - Chagrin Falls OH, US
Norman L. Boling - Santa Rosa CA, US

Assignee:

Advanced Lighting Technologies, Inc. - Solon OH

International Classification:

H01J 9/00

US Classification:

445 58, 445 11, 427 58

Abstract:

An apparatus and method for achieving desired spectral emission characteristics in plasma lamps is disclosed. The apparatus and method use multi-layer thin film optical interference coatings to selectively reflect a portion of the light such that it can be absorbed in the plasma. The multi-layer thin film coating is applied to any surface of the lamp, which substantially surrounds the plasma. The number and thickness of the layers in the coating are selected to ensure that significant portion of the selected light emitted from the plasma is reflected by the coating and absorbed by the plasma. The properties of the coating, reflectance, transmittance and absorption are determined as a function of plasma and lamp characteristics. These characteristics include the spectral emission characteristics of the plasma, the spectral absorption characteristics of the plasma, the physical dimensions of the plasma, the angular distribution of the light emitted from the plasma on the coating and the geometry of the coated surface.

US Patent:

20020195943, Dec 26, 2002

Filed:

Apr 1, 2002

Appl. No.:

10/112024

Inventors:

Matthew Krisl - Santa Rosa CA, US
Abbas Lamouri - Aurora OH, US
Leonid Pekker - Santa Rosa CA, US
Paul Morand - Rohnert Park CA, US
Juris Sulcs - Chagrin Falls OH, US
Norman Boling - Santa Rosa CA, US

International Classification:

H01J017/20
H01J061/12

US Classification:

313/637000, 313/110000

Abstract:

An apparatus and method for achieving desired spectral emission characteristics in plasma lamps is disclosed. The apparatus and method use multi-layer thin film optical interference coatings to selectively reflect a portion of the light such that it can be absorbed in the plasma. The multi-layer thin film coating is applied to any surface of the lamp, which substantially surrounds the plasma. The number and thickness of the layers in the coating are selected to ensure that a significant portion of the selected light emitted from the plasma is reflected by the coating and absorbed by the plasma. The properties of the coating, reflectance, transmittance and absorption are determined as a function of plasma and lamp characteristics. These characteristics include the spectral emission characteristics of the plasma, the spectral absorption characteristics of the plasma, the physical dimensions of the plasma, the angular distribution of the light emitted from the plasma on the coating and the geometry of the coated surface.

US Patent:

20110232745, Sep 29, 2011

Filed:

Mar 23, 2011

Appl. No.:

13/070091

Inventors:

Lucas Alves - Occidental CA, US
Paul Morand - Rohnert Park CA, US

Assignee:

Deposition Sciences, Inc. - Santa Rosa CA

International Classification:

H01L 31/0216
G02B 1/11
H01L 31/0232
C23C 14/34
C01B 33/12

US Classification:

136256, 359601, 359586, 20419226, 423335

Abstract:

A photovoltaic solar cell having a multi-layer antireflective coating on an outer surface. The coating may include alternating layers of silicon dioxide and tantalum pentoxide and may have average front surface reflectance of less than five percent over the wavelength range from 300 nm to 1850 nm with the silicon dioxide having a refractive index less than 1.4 at a wavelength of 550 nm.