Digital Projection Limited

Texas Instruments Corporation

Digital Protection Limited

Martin Kavanagh

Graham Harry Moss

Raymond Gordon Fielding

An apparatus for transferring heat between an object and a fluid, the apparatus comprising at least one set of elongate members, the elongate members each having a tip for contacting the object. The tips of the elongate members generally make a point contact with the object and allow heat to be transferred between the object and a fluid, often air. A gap is provided between adjacent elongate members to facilitate fluid flow around the object and between the elongate members.

Heat transfer apparatus

The present application relates to apparatus () for cooling a light valve device (), the apparatus comprising an array of elongate members (), the elongate members () each having a tip () for contacting the light valve device (). The apparatus () is suitable for cooling a digital micro-mirror device (). A duct () may be provided for directing a flow of air from a fan to the light valve device ().

A projection device includes one or more deformable mirror arrays ( ) arranged to spatially modulate incident light. A totally internally reflecting surface ( ) is arranged to direct light to and from the deformable mirror array ( ). The device may include one or more dichroic layers ( ) arranged such that the light incident on each dichroic layer ( ) is substantially normal incidence to the layer.

Projection device comprising a prism system including at least one totally internally reflecting surface at a boundary between two members of different refractive indices within the prism system

A light source is provided that includes a reflector for generating a substantially rectangular beam. The light source may include an arc lamp that includes a magnetic field generation means in the vicinity of the arc for reducing the arc diameter, or a secondary reflection means for avoiding part of the light that is generated from being obscured by the arc lamp electrodes.

Rectangular beam generating light source

A projection device which includes a plurality of deflectable mirror arrays arranged to spatially modulate incident light. A totally internal reflecting surface is arranged to direct light to and from the deformable mirror array. The device includes on or more dichroic layers arranged at an angle relative to the incident light dependent on the spread of angles on the incident beam relative to the optical axis. Additionally or alternatively, the totally internally reflecting surface may be arranged to direct non-spatially modulated light towards a beam dump.

Projection device

An arc lamp suitable for use as a high intensity light source in a projection system is described. A reflector is arranged to reflect the light produced by the arc into a directional light beam, secondary reflection means being arranged to direct part of the reflected beam so as to compensate for regions which are obscured by the electrodes. Means are provided within the light source to dissipate heat generated by the electrodes.

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Oldham, United Kingdom

Martin Kavanagh