Evans & Sutherland Computer Corporation Patent applications |
Patent application number | Title | Published |
20090231331 | SYSTEM AND METHOD FOR DISPLAYING STEREO IMAGES - A method for displaying a stereo eye image on a curved surface is disclosed. A mathematical model of a computer generated scene having a vertex may be generated. A mono vertex vector may be calculated normal to the curved surface at the vertex location on the curved surface to a center of a viewer position. A left vertex may be calculated by applying a cross product to the vertex vector and a viewer's eye position vector. A right vertex may be calculated into the frame buffer by applying the cross product to the vertex vector and a negative viewer's eye position vector. The calculated points may be projected onto a curved surface for viewing. | 09-17-2009 |
20090219491 | Method of combining multiple Gaussian beams for efficient uniform illumination of one-dimensional light modulators - An illumination system for transforming at least one laser light beam having a non-uniform distribution in a first axis and a second axis to a beam having a substantially uniform distribution in the first axis while preserving the non-uniform distribution in the second axis. The transformed beam may be imaged as a line image onto a one-dimensional light modulation device. The illumination system may comprise a light tunnel having two sides that interact with the at least one laser light beam in the first axis and two sides that do not interact with the light in the second axis. | 09-03-2009 |
20090028195 | SYSTEM AND METHOD FOR FREQUENCY CONVERSION OF COHERENT LIGHT - A system and method is disclosed for converting a frequency of a coherent light source. A birefringent nonlinear material is cut at an angle for critical phase matching to form a rectangular parallelepiped biased nonlinear crystal. The nonlinear crystal cut at a biased angle can be placed at an angle in a coherent light beam to enable the beam to be directed through the crystal over a substantially optimal phase matching path while minimizing back reflection of the coherent light beam to the coherent light source. | 01-29-2009 |
20090002644 | INVISIBLE SCANNING SAFETY SYSTEM - An invisible scanning safety system for use with laser projection systems that includes sensors monitoring less than the entire laser accessible region such that the region monitored is reduced to almost the absolute minimum, to thereby prevent unwarranted stoppages or disturbances in projection. The system may also monitor a 360 degree region around the lens of the laser projector, a wedge-shaped region, a pyramid-shaped region or a chimney-shaped region. | 01-01-2009 |
20080259988 | OPTICAL ACTUATOR WITH IMPROVED RESPONSE TIME AND METHOD OF MAKING THE SAME - An optical actuator having an improved response time and an improved frequency operational range due to the reduced mass of a substrate coupled to an actuator and method of making the same. The optical actuator may be formed by adhering an uncoated substrate to the actuator using an epoxy. Once cured, any deformities and irregularities in a top surface of the substrate are removed. An optical coating is then applied to the top surface of the substrate. Once finished, the optical actuator may be used in a laser resonating cavity. Further, the optical actuator desirably may have a resonant frequency of about 150 kHz. | 10-23-2008 |