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公开(公告)号：US11016374B2
公开(公告)日：2021-05-25
申请号：US16595799
申请日：2019-10-08
发明人： Joerg Reitterer , Franz Fidler , Anna Balbekova , Gerhard Schmid , Ferdinand Saint Julien-Wallsee
摘要： The disclosed subject matter relates to an apparatus for projecting a light spot, comprising a light source emitting a light beam having a wavelength and a divergence angle, a mirror arranged in the path of the light beam to deflect said light beam about a nominal deflection angle, the mirror having a surface with a known curvature, and a collimation lens arranged between the light source and the mirror in the path of the light beam, wherein the lens is mounted at a distance z1≠f1 from the light source, f1 being the focal length of the lens, and wherein the distance z1 is chosen such that the width of the deflected light beam has a minimum at a pre-determined projection distance.
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公开(公告)号：US11531254B2
公开(公告)日：2022-12-20
申请号：US17220122
申请日：2021-04-01
发明人： Gerhard Schmid , Joerg Reitterer , Aart Verhoef
摘要： The disclosed subject matter relates to a method of projecting an image by means of a light source emitting light pulses and an oscillating micro-electro-mechanical system (MEMS) mirror deflecting the emitted light pulses, comprising: providing a matrix of durations for each pixel, and incrementing or decrementing a pixel index whenever a respective duration indexed by the respective pixel indices in the playout matrix has lapsed; for each light pulse: retrieving the respective intensity and durations indexed by the current pixel indices, calculating an interval from at least one of said durations, emitting said light pulse with said retrieved intensity, and waiting said calculated interval before emitting the next light pulse. The disclosed subject matter further relates to a projector carrying out said method.
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