Patents by Inventor Erez N. Ribak

Erez N. Ribak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Variable lenslet array
    Patent number: 7075698
    Abstract: The disclosed invention provides a variable lenslet array system that comprises an acousto-optic medium and at least one acoustic wave generator that is positioned adjacent to the acousto-optic medium. The acoustic wave generator is adapted to generate standing acoustic waves into the acousto-optic medium. The wavelength of the resonant acoustic waves is variable in respect to the medium dimensions or can be varied by changing the driving frequency of the wave generator. The standing acoustic waves within the acousto-optic medium change locally the index of refraction. A wave front of a light beam, which crosses these periodic changes of the index of refraction, becomes corrugated and effectively, an array of lenslets is formed.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: July 11, 2006
    Assignee: Technion Research and Development Foundation, Ltd.
    Inventor: Erez N. Ribak
  • Light induced strains in porous crystalline materials and uses thereof
    Patent number: 6900926
    Abstract: A piezoelectric device is disclosed, which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and at least one electrode being in electrical contact with the first element, such that subjecting the first element to an electric potential via the at least one electrode results in a strain induced by the first element on the second element. Also disclosed is a piezooptic device which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and a light source, such that subjecting the first element to light originating from the light source results in a strain induced by the first element on the second element.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: May 31, 2005
    Assignee: Technion Research & Development Foundation Ltd.
    Inventor: Erez N. Ribak
  • Voltage and light induced strains in porous crystalline materials and uses thereof
    Patent number: 6800988
    Abstract: A piezoelectric device is disclosed, which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and at least one electrode being in electrical contact with the first element, such that subjecting the first element to an electric potential via the at least one electrode results in a strain induced by the first element on the second element. Also disclosed is a piezooptic device which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and a light source, such that subjecting the first element to light originating from the light source results in a strain induced by the first element on the second element.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: October 5, 2004
    Assignee: Technion Research & Development Foundation Ltd.
    Inventor: Erez N. Ribak
  • Light induced strains in porous crystalline materials and uses thereof
    Publication number: 20040169941
    Abstract: A piezoelectric device is disclosed, which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and at least one electrode being in electrical contact with the first element, such that subjecting the first element to an electric potential via the at least one electrode results in a strain induced by the first element on the second element. Also disclosed is a piezooptic device which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and a light source, such that subjecting the first element to light originating from the light source results in a strain induced by the first element on the second element.
    Type: Application
    Filed: November 3, 2003
    Publication date: September 2, 2004
    Inventor: Erez N. Ribak
  • Voltage and light induced strains in porous crystalline materials and uses thereof
    Patent number: 6728024
    Abstract: A piezoelectric device is disclosed, which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and at least one electrode being in electrical contact with the first element, such that subjecting the first element to an electric potential via the at least one electrode results in a strain induced by the first element on the second element. Also disclosed is a piezooptic device which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and a light source, such that subjecting the first element to light originating from the light source results in a strain induced by the first element on the second element.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: April 27, 2004
    Assignee: Technion Research & Development Foundation Ltd.
    Inventor: Erez N. Ribak
  • Variable lenslet array
    Publication number: 20030206327
    Abstract: The disclosed invention provides a variable lenslet array system that comprises an acousto-optic medium and at least one acoustic wave generator that is positioned adjacent to the acousto-optic medium. The acoustic wave generator is adapted to generate standing acoustic waves into the acousto-optic medium. The wavelength of the resonant acoustic waves is variable in respect to the medium dimensions or can be varied by changing the driving frequency of the wave generator. The standing acoustic waves within the acousto-optic medium change locally the index of refraction. A wave front of a light beam, which crosses these periodic changes of the index of refraction, becomes corrugated and effectively, an array of lenslets is formed.
    Type: Application
    Filed: May 3, 2002
    Publication date: November 6, 2003
    Inventor: Erez N. Ribak
  • Voltage and light induced strains in porous crystalline materials and uses thereof
    Publication number: 20020101130
    Abstract: A piezoelectric device is disclosed, which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and at least one electrode being in electrical contact with the first element, such that subjecting the first element to an electric potential via the at least one electrode results in a strain induced by the first element on the second element. Also disclosed is a piezooptic device which includes a first element of porous crystalline material, a second element being attached to, or integrally formed with, the first element, and a light source, such that subjecting the first element to light originating from the light source results in a strain induced by the first element on the second element.
    Type: Application
    Filed: February 1, 2002
    Publication date: August 1, 2002
    Inventor: Erez N. Ribak