Michel M Sayag

US Patent:

6747805, Jun 8, 2004

Filed:

Jul 22, 2002

Appl. No.:

10/202454

Inventors:

Michel Sayag - Mountain View CA 94043

Assignee:

Michel Sayag - Mountain View CA

International Classification:

G02B 300

US Classification:

359664, 359793, 359797, 348340

Abstract:

Simple, inexpensive and durable multi-element lens systems are provided. These lens systems may be optically coupled to digital image-capturing devices, such as those used in digital cameras. Some lens systems of the present invention include a glass microsphere bonded to a planar surface of a glass hemisphere. In preferred lens systems, the thickness of the glass hemisphere is selected to form an image plane for transmitted light that is tangent to the surface of the microsphere. Accordingly, in digital cameras fabricated with such lens systems, the glass microsphere can be attached directly to a digital image-capturing device. These preferred lens systems require no focusing adjustment and are suitable for applications to requiring a wide field of view. In some embodiments, the glass microsphere is bonded to the glass hemisphere using a light-absorbing material in order to create an apodized pupil. Some such embodiments are fabricated with a light-absorbing material with an absorption coefficient that varies according to the wavelength of transmitted light.

US Patent:

6800870, Oct 5, 2004

Filed:

Jun 21, 2001

Appl. No.:

09/887543

Inventors:

Michel Sayag - Mountain View CA 94043

Assignee:

Michel Sayag - Mountain View CA

International Classification:

G03B 4208

US Classification:

250584, 250585, 250586

Abstract:

Methods and apparatus are described for retrieving information from a storage medium. A first portion of the surface of the storage medium is exposed to stimulating light which diffuses in the storage medium under a second portion of the surface adjacent the first portion. The second portion of the surface is shielded from exposure to the stimulating light. Stimulated light corresponding to the information is received with at least one detector positioned to receive the stimulated light via the second portion of the surface of the storage medium. The stimulated light is released from the storage medium in response to the stimulating light diffused under the second portion of the surface.

US Patent:

6950242, Sep 27, 2005

Filed:

Feb 19, 2004

Appl. No.:

10/783945

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G02B003/00
G02B017/00
H04N005/225

US Classification:

359664, 359735, 348340

Abstract:

An optical system operable to transmit an energy flux is described. A first substantially spherical lens includes first and second substantially hemispherical portions joined at an interface. The interface includes a partially reflective material on a first substantially planar surface of at least one of the first and second hemispherical portions. A second lens has a convex surface and a second substantially planar surface. A portion of the second substantially planar surface of the second lens is secured to the first lens to form an optical axis. The first and second lenses are operable to transmit a first portion of the energy flux along the optical axis. The partially reflective surface is operable to reflect a second portion of the energy flux at an angle to the optical axis.

US Patent:

7002533, Feb 21, 2006

Filed:

Aug 13, 2002

Appl. No.:

10/218199

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G09G 3/36

US Classification:

345 7, 345 87

Abstract:

Electronic displays are provided which can reproduce image data with high contrast ratios and a gray scale range comparable to conventional X-ray film viewed on a light box. One such display includes a rear low-resolution LCD or DLP display which projects an image onto a high-resolution LCD display. In such embodiments, the mechanical and optical registration between the two displays is not critical. Therefore, modulation transfer function and distortion of the projection optics are not critical. Accordingly, the brightness of the inventive display can be maximized with high power lamps and high aperture projection optics. Because the display has a high dynamic range, the need for dynamic range compression algorithms is reduced.

US Patent:

7359488, Apr 15, 2008

Filed:

May 24, 2005

Appl. No.:

11/137685

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G21K 1/10
G21N 23/087

US Classification:

378154, 378 87

Abstract:

Methods and apparatus for generating an x-ray image. An object is interposed between a detector and an x-ray source. A grid is interposed between the x-ray source and the object. The grid is exposed to primary x-ray energy generated by the x-ray source, thereby exposing the object to a first portion of the primary energy via the interstices of the grid. A second portion of the primary energy is received with first areas of the detector corresponding to the interstices of the grid. Secondary x-ray energy is received with the first areas of the detector and with second areas of the detector corresponding to the elements of the grid. The secondary energy results from scattering of the primary x-ray energy. Image data are generated by altering data from the first areas with reference to data from the second areas.

US Patent:

7589341, Sep 15, 2009

Filed:

Feb 26, 2004

Appl. No.:

10/789547

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G03B 42/08

US Classification:

250584

Abstract:

Methods and apparatus are described for retrieving information from a storage medium. A first portion of the surface of the storage medium is exposed to stimulating light which diffuses in the storage medium under a second portion of the surface adjacent the first portion. The second portion of the surface is shielded from exposure to the stimulating light. Stimulated light corresponding to the information is received with at least one detector positioned to receive the stimulated light via the second portion of the surface of the storage medium. The stimulated light is released from the storage medium in response to the stimulating light diffused under the second portion of the surface.

US Patent:

7825394, Nov 2, 2010

Filed:

Jan 13, 2009

Appl. No.:

12/353169

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G03B 42/08

US Classification:

250584, 250586, 25022723

Abstract:

Methods and apparatus are described for retrieving information from a storage medium. A first portion of the surface of the storage medium is exposed to stimulating light which diffuses in the storage medium under a second portion of the surface adjacent the first portion. The second portion of the surface is shielded from exposure to the stimulating light. Stimulated light corresponding to the information is received with at least one detector positioned to receive the stimulated light via the second portion of the surface of the storage medium. The stimulated light is released from the storage medium in response to the stimulating light diffused under the second portion of the surface.

US Patent:

7929220, Apr 19, 2011

Filed:

Oct 20, 2009

Appl. No.:

12/582586

Inventors:

Michel Sayag - Mountain View CA, US

International Classification:

G02B 9/08
G02F 1/03
G02F 1/07

US Classification:

359738, 359241

Abstract:

An adjustable apodized lens aperture is described which is constructed using photochromic material. As the excitation energy increases, the aperture constricts so as reduce the amount of light through the aperture. As the excitation energy decreases, the aperture dilates so as increase the amount of light through the aperture.