A transmissive body

Details A transmissive body A transmissive body

G - Physics

06

F

G06F 3/042 (2006.01) G02B 27/30 (2006.01)

Patent

CA 2688214

An apparatus and method for transmitting, collimating and redirecting light from a point-like source to produce a collimated optical signal in a substantially planar form are provided. In one embodiment the apparatus is manufactured as a unitary transmissive body comprising a collimation element and a redirection element, and optionally a transmissive element. In another embodiment the apparatus is assembled from one or more components. The apparatus and method are useful for providing sensing light for an optical touch input device or for providing illumination for a display.

L'invention concerne un appareil et un procédé pour transmettre, collimater et rediriger la lumière provenant d'une source ponctuelle afin de produire un signal optique collimaté selon une forme sensiblement planaire. Dans un mode de réalisation, l'appareil est fabriqué sous la forme d'un corps transmissif unitaire comprenant un élément de collimation et un élément de redirection, et facultativement, un élément transmissif. Dans un autre mode de réalisation, l'appareil est assemblé à partir d'un ou plusieurs composants. L'appareil et le procédé sont utiles pour donner une lumière de détection pour un dispositif d'entrée tactile optique ou pour donner un éclairage pour un dispositif d'affichage.

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