Infocus Corporation

Other

Serge J A Bierhuizen

David Elliot Slobodin

An apparatus, system, and method for a transmissive electromechanical light valve including a gate pivotable between a first position to allow light to pass through a valvelet and a second position to prevent light from passing through the valvelet are disclosed herein. Other embodiments may be described and claimed herein.

Transmissive electromechanical light valve and system

An apparatus, system, and method for a polarizing conversion assembly adapted to provide polarized light having an intensity distribution to complement an angular transmission distribution of a corresponding light modulator are disclosed herein.

Polarization conversion assembly to complement angular transmission distribution of polarizing light modulator

Embodiments of the present invention include an apparatus, method and system for an illumination arrangement including a color recycling subsystem to receive reflected light from a transflective color filter along a reflectance axis that is non-coincident with an incident axis. Other embodiments may be described and claimed.

Transflective color recovery

An illumination system is provided with at least a first reflecting device that has a first focal point at the arc of an arc lamp. The second focal point of the reflecting device is located at the input end of a compound parabolic concentrator (CPC). The CPC is optically coupled with an optical integrator. Light exiting the optical integrator may be used in low &#xe9;tendue projection systems.

Efficient illumination systems for reduced &#xe9;tendue color video projection systems

An illumination system is provided with at least a first arc lamp positioned on the first axis of a first reflecting device. An aspherical corrector plate is positioned to receive the light rays produced by the arc lamp. The aspherical corrector plate is shaped so that it provides a substantially constant magnification of the arc as a function of the range of reflection angles of light rays off of the reflecting device.

Illumination systems employing corrective optics for use in reduced &#xe9;tendue color video projection systems

The invention includes a color projection system. System includes a light source, a first relay lens, disposed on a first optical path, optically coupled to the light source. System also includes a second relay lens, disposed in a second optical path, optically coupled to the first lens, the second optical path being of a predetermined vertical distance above the first optical path. The color projection system also includes a light management device, having a light entrance surface and a light exit surface, the light entrance surface optically coupled to the second lens along the second optical path, the light exit surface located on a third optical path, and the third optical path being substantially parallel to the first and second optical paths and being a predetermined distance below the second optical path. A projection lens may be optically coupled to the light exit surface of the light management device.

Reduced form factor projection system

The invention includes a color projection system comprising having a light source optically coupled to a light management device. The light management device being optically coupled to a polarizer. The color projection system also includes a projection lens optically coupled to the polarizer. Additionally, a plate is disposed between the polarizer and the projection lens. The plate has quarter-wave properties. The light management device has a number of polarizing beamsplitter (PBS) cubes, with one or more subsets of which are optically coupled to each other, and at least one light blocking region disposed between a first and a second PBS cube of the number of PBS cubes. As result reduction of stray light in a reflective projection system is facilitated.

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Santa Rosa, CA, United States of America

Serge J A Bierhuizen