Patent application number | Description | Published |
20080239497 | SELECTIVE ABSORBING - An interference coating between a display and an intended viewing area that selectively absorbs incident optical energy in at least one first wavelength region and selectively transmits incident optical energy in at least one second wavelength region. | 10-02-2008 |
20090002816 | Selective Reflecting for Laser Projector - A projection screen for selectively reflecting light from a front projector. The screen includes an etalon coating structure with a first layer of reflective material, a second layer of dielectric material, and a third layer of partially reflective semiconductor material. The projection screen produces a reflection having an asymmetric-shaped response in the visible spectrum. | 01-01-2009 |
20090109366 | Liquid Crystal Display Without Bezel - A bezel-less video display that includes a liquid-crystal display panel, a sheet in front of the liquid-crystal display panel, and an optically transparent material which fills the volume between the display panel and the sheet. The sheet has an antiglare coating which has a gloss level less than 50 gloss units at 60 degrees angle of incidence. The antiglare coating also has a transmissive resolution of at least 10 cycles/mm. | 04-30-2009 |
20100039352 | FORMING SPECTRAL FILTERS - A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image. | 02-18-2010 |
20110134510 | Despeckling Apparatus and Method - An apparatus and method that reduces laser speckle by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color. An adjustable despeckler is formed by combining two optical fibers in parallel and adjusting the amount of light in each path. | 06-09-2011 |
20110310479 | FORMING SPECTRAL FILTERS - A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image. | 12-22-2011 |
20120002278 | Anti-Moire Optical System and Method - A three-dimensional optical display system and method that reduces moiré patterns formed between the image display panel and a 3D lens. The reduction of moiré patterns may be achieved by adding a lenticular anti-moiré lens or by curving the 3D lens into a convex shape. The anti-moiré lens may have a regular period, or may incorporate random elements. | 01-05-2012 |
20120140320 | Single-Display Color 3D Method and Apparatus - A method of stereoscopic image formation that includes some or all of the following steps: generating a laser beam, switching the laser beam alternately between a path that includes a stimulated-Raman-scattering optical fiber and a path that does not include a stimulated-Raman-scattering optical fiber, and filtering the output of the stimulated-Raman-scattering optical fiber to reduce the residual non-stimulated-Raman-scattering light. | 06-07-2012 |
20120170110 | Speckle Reduction Method - A method of despeckling light that includes mixing high-speckle laser light with low-speckle laser light in amounts selected to achieve a desired color point in a digital image. The high speckle laser light may be red laser diodes and the low-speckle laser light may be green stimulated-Raman-scattering light from an optical fiber. The desired color point may be DCI red or Rec. 709 red. | 07-05-2012 |
20120219021 | Laser Display Method and System - A laser display system and method that includes some or all of the following parts: an optical apparatus that includes two spatial light modulators and a laser, and switches the laser between the light modulators; two lasers that combine pulses to illuminate one spatial light modulator; controlling a laser Q-switch to stay in CW mode for variable periods of time to generate variable-amplitude pulses; and loading and resetting a digital micromirror device between pulses of light. | 08-30-2012 |
20130021586 | Frequency Control of Despeckling - A method and apparatus that reduces laser speckle by using stimulated Raman scattering in an optical fiber. The pulse repetition frequency of the laser is adjusted to control aspects of the laser light such as color or despeckling. In DLP projection systems, an optical monitor may be used to send information to a bit sequence, and the bit sequence may control the pulse repetition frequency of the laser based on the optical monitor signal. | 01-24-2013 |
20130044367 | Microbend-Enhanced Despeckling - A method and apparatus that enhances an aspect of light output from an optical fiber by microbending the optical fiber to increase stimulated Raman scattering light. The enhancement may be a change in speckle characteristics or a change in color. There may be an optical monitor that varies the amount of microbending by controlling the force on the optical fiber. | 02-21-2013 |
20130107350 | Multiple Laser Despeckling | 05-02-2013 |
20130162952 | Multiple Laser Projection System - A method and apparatus for despeckling that includes a green laser diode, a DPSS laser, and stimulated Raman scattering light formed in an optical fiber. The laser diode light and stimulated Raman scattering light are combined to form a projected digital image. The output of the optical fiber may be split into two spectrums. The projected digital image may be stereoscopic with one image formed from the laser diode light and one spectrum, and the other image formed from the other spectrum. | 06-27-2013 |
20130250401 | Laser Projection System with Improved Bit Depth - An apparatus and method for despeckling that includes a green laser diode assembly, a pulsed laser with a repetition rate of less than 100 kHz, and stimulated Raman scattering light formed in an optical fiber. The laser diode light and stimulated Raman scattering light are combined to form a projected digital image. The green laser diode assembly or the pulsed laser is switched to improve the bit depth of the projected digital image. | 09-26-2013 |
20130278903 | Short Pulse Despeckling - An apparatus and method for despeckling that includes a pulsed laser with a pulse width between 1 ps and 10 ns and stimulated Raman scattering light formed in an optical fiber. The stimulated Raman scattering light may be used to form a projected digital image. A second pulsed laser with a wavelength at least 2 nm different may be included and stimulated Raman scattering light formed in a second optical fiber may be combined with the stimulated Raman scattering light formed in the first optical fiber. | 10-24-2013 |
20130329755 | Green and Red Despeckling - An apparatus and method for despeckling that includes a pulsed green laser, a green laser diode assembly, and stimulated Raman scattering light formed in an optical fiber. The stimulated Raman scattering light is divided into green light and red light. The green light from the stimulated Raman scattering is combined with the green laser diode assembly to form a green primary light. The red light from the stimulated Raman scattering light forms a red primary light. The green primary light and the red primary light are used to project a digital image. | 12-12-2013 |
20140111847 | Despeckling Apparatus and Method - An apparatus and method that reduces laser speckle by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color. An adjustable despeckler is formed by combining two optical fibers in parallel and adjusting the amount of light in each path. | 04-24-2014 |
20140133024 | Projection Systems with Despeckled Laser Light - An apparatus and method for the projection of stereoscopic images that includes a pulsed laser that generates green light and an optical fiber that generates stimulated Raman scattered light. The stimulated Raman scattering light is divided into green light and red light and the colors are used to form stereoscopic images. Additional lasers may be added to meet specific primary color targets and to balance the brightness of the images for each eye. | 05-15-2014 |
20140160442 | Despeckling of Continuous-Wave Lasers - An apparatus and method that reduces speckle from continuous-wave lasers by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color and level of despeckling. Single-mode fiber may be utilized to achieve a sufficiently high power density to generate stimulated Raman scattering. | 06-12-2014 |
20140177034 | Despeckling Stability - An apparatus and method that improves the stability of despeckling using stimulated Raman scattering in an optical fiber. Optical modes in the fiber are scrambled by physical movement of the optical fiber, focusing assembly, or laser beam. The improvement in stability may include a reduction in flicker or reduction in long-term drift. | 06-26-2014 |
20140185130 | Despeckling Red Laser Light - A method of despeckling light that includes mixing high-speckle far-red laser light with low-speckle green laser light in amounts selected to achieve a desired color point in a digital image. The far-red laser light may be red laser diodes with wavelengths in the range of 640 to 680 nm. The green laser light may include stimulated-Raman-scattering light from an optical fiber. The desired color point may be DCI red or Rec. 709 red. | 07-03-2014 |