Evans & Sutherland Computer Corporation

Dynatronics Corporation

Forrest L Williams

Allen H Tanner

Dennis F Elkins

David P Marceau

Robert R Christensen

Bret D Winkler

Yuri S Grapov

Gary Whatcott

A shuttering system for a scanning projector having a laser source, a grating light valve light modulator, and a light steering scanner includes a feedback system interconnecting the scanner with the light modulator. The feedback system is configured to deactivate the light modulator in case of scanner malfunction, so as to redirect laser light away from the scanner.

Shuttering system for scanning projectors

A system and method for generating a high-resolution image using a scanned-column projector is disclosed. The method includes the operation of generating a time-varying line image. A further operation includes collimating the time-varying line image in at least one plane. An additional operation involves scanning the collimated time-varying line image using a scan mirror. A further operation includes projecting the scanned collimated time-varying line image onto a surface. The scanned collimated time-varying line image is projected with at least one imaging element.

High-resolution-imaging system for scanned-column projectors

A system and method is disclosed for reducing visibility of image artifacts caused by diffractive elements in a laser projector having a structured diffractive device. At least two diffracted orders of light can be selected from light emitted from the structured diffractive device using a spatial light filter. The polarization of at least one of the selected diffracted orders can be changed with respect to another selected diffracted order. The selected diffracted order can be recombined to form an image having reduced visible image artifacts.

System and method for reduction of image artifacts for laser projectors

Systems and methods for dynamically distributing power of a light beam for use in administering light therapy. A laser light beam having a maximum peak power is selectively diffused to distribute the maximum peak power. In at least some implementations, the diffused laser light beam is attenuated across the diffused beam. Having undergone processes of diffusion and attenuation, the laser light beam is then safely used to administer light therapy on a patient. In further implementations, the diffusion includes a defocused diffusion and/or includes a distribution of power rather than an attenuation of power.

Dynamically distributing power of a light beam for use in light therapy

A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.

Method for tuning a fiber optic component

Thermally-controlled fiber optic tuning and isolating device

Tension-controlled fiber optic tuning and isolating device

The invention provides a system and method for reducing laser speckle and interference patterns in a laser projector display when using a laser projector having a spatial light modulator (SLM) with a defined pixel rate. The method can include the operation of polarizing a laser output of a continuous wave laser such that the laser output is s-polarized with respect to a beam combiner. The s-polarized laser output can be divided into a first laser beam and a second laser beam. A phase of the second laser beam can be modulated with an amplitude sufficient to create a phase delay of approximately half a wavelength of the laser output and at a frequency at least twice that of the SLM's pixel rate.

Reduction of speckle and interference patterns for laser projectors

Fiber optic mechanical/thermal tuning and isolating device

Fiber optic mechanical/thermal tuner and isolator

A method and device for the nonlinear combination of laser light which produces a beam of uniform intensity, high spatial purity, and high conversion efficiency. The method includes emitting a laser light from a tunable distributed feedback fiber laser having both thermal and piezoelectric control elements which produces a laser light at a given frequency, wavelength, and intensity; converting the laser light in a nonlinear resonator which uses a nonlinear optical crystal for frequency conversion or mixing; and measuring the resonant frequency of the nonlinear resonator and adjusting the laser light frequency using both the thermal and piezoelectric elements of the fiber laser light source to match the resonant frequency conditions within the nonlinear resonator.

Growing community of inventors

Sandy, UT, United States of America

Forrest L Williams