Abstract: An oxygen sensor and a method for manufacturing the oxygen sensor are provided. The oxygen sensor includes a zirconia layer having first and second sides. The second side is opposite the first side. The oxygen sensor further includes a first electrode disposed on the first side of the zirconia layer. The oxygen sensor further includes a second electrode disposed on the second side of the zirconia layer. The oxygen sensor further includes a porous channel structure configured to route air therethrough to the first electrode while preventing hydrocarbons from flowing therethrough and contacting the first electrode, such that a signal between the first and second electrodes is indicative of an amount of oxygen in exhaust gases contacting the second electrode.

Abstract: An oxygen sensor and a method for manufacturing the oxygen sensor are provided. The oxygen sensor includes a zirconia layer having first and second sides. The second side is opposite the first side. The oxygen sensor further includes a first electrode disposed on the first side of the zirconia layer. The oxygen sensor further includes a second electrode disposed on the second side of the zirconia layer. The oxygen sensor further includes a porous channel structure configured to route air therethrough to the first electrode while preventing hydrocarbons from flowing therethrough and contacting the first electrode, such that a signal between the first and second electrodes is indicative of an amount of oxygen in exhaust gases contacting the second electrode.

Abstract: The present invention relates to an image projector comprising a casing containing at least: an illumination system (11, 10); an optical unit comprising at least one optical valve (30′, 31′, 32′, 20) modulating the light emitted by the illumination system; a projection lens (5) projecting the modulated light outside the casing; a power supply, control electronics and cooling means (116, 117, 118, 119, 140, 141); the casing being provided with at least one aperture (106) forming an air inlet. The casing further comprises a specific air filtration means (115) positioned under the optical unit and in such a way as to surround the latter. The invention is mainly applicable to LCD projectors.

Abstract: The present invention relates to a back-lighting system for a transmissive electrooptic modulator using the light polarization effect. The system comprises a means for generating light rays, a reflector for sending the rays back in a direction x and means for guiding the light rays towards the electrooptic modulator, with a reflective linear polarizing film positioned in front of the said means for guiding the light rays. The invention applies to projection.

Abstract: The present invention relates to an image projector comprising a casing containing at least:

Abstract: The present invention relates to an image projector comprising a casing containing at least: