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公开(公告)号：US20190171027A1
公开(公告)日：2019-06-06
申请号：US15832682
申请日：2017-12-05
发明人： Wai-Hon Lee
摘要： Apparatus for projecting a pattern includes a laser source, a collimating lens and a diffractive optical element (DOE) to diffract the collimated laser beam into a specific dot pattern for sensing the depth of a three dimensional (3D) surface.
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公开(公告)号：US10310281B1
公开(公告)日：2019-06-04
申请号：US15832682
申请日：2017-12-05
发明人： Wai-Hon Lee
摘要： Apparatus for projecting a pattern includes a laser source, a collimating lens and a diffractive optical element (DOE) to diffract the collimated laser beam into a specific dot pattern for sensing the depth of a three dimensional (3D) surface.
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公开(公告)号：US10509128B1
公开(公告)日：2019-12-17
申请号：US16383457
申请日：2019-04-12
发明人： Wai-Hon Lee
IPC分类号： G01C3/08 , G01S17/89 , H01S5/022 , H01S5/40 , H01S5/042 , G01S7/481 , H01S5/42 , G01S17/42 , G01S7/484
摘要： In an embodiment, an optical projector is provided with a laser array. Each laser is either collimated or focused to a fixed distance. At least one multiple beam grating (MBG) is placed in front of the laser array. The light pattern from the laser array is duplicated by the MBG, and cast on an object to be measured. The pattern on the object is changed by rotating the MBG. As a result, the number of patterns of structured dots that can be projected on the object is nearly unlimited. The optical projector can be used to provide depth perception to motion detection systems, to vehicle self-driving systems, and for many other uses.
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公开(公告)号：US10545457B2
公开(公告)日：2020-01-28
申请号：US16297495
申请日：2019-03-08
发明人： Wai-Hon Lee
摘要： In an embodiment, an off-axis hologram is provided. The off-axis hologram creates two, conjugate images which are on either side (off-axis) of the 0-order beam. A Multiple Beam Grating (MBG) is used to both duplicate the conjugate images and to redirect the images along the axis. The 0-order beam is blocked before or at the MBG. The MBG projects the images onto a 3D surface, such as a person's face.
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公开(公告)号：US20190204782A1
公开(公告)日：2019-07-04
申请号：US16297495
申请日：2019-03-08
发明人： Wai-Hon LEE
摘要： In an embodiment, an off-axis hologram is provided. The off-axis hologram creates two, conjugate images which are on either side (off-axis) of the 0-order beam. A Multiple Beam Grating (MBG) is used to both duplicate the conjugate images and to redirect the images along the axis. The 0-order beam is blocked before or at the MBG. The MBG projects the images onto a 3D surface, such as a person's face.
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公开(公告)号：US10317684B1
公开(公告)日：2019-06-11
申请号：US15879367
申请日：2018-01-24
发明人： Wai-Hon Lee
摘要： In one embodiment, the light from a single laser is used to illuminate a pattern-generating optical element to generate a pattern. The pattern-generating optical element in various embodiments can be, for example, a holographic diffractive optical element (DOE) or an array of micro-lenses. A multiple beam grating (MBG) duplicates the pattern multiple times to provide a multiple pattern image. A lens is used to project the patterns onto an object. In one embodiment, the lens is located between the pattern-generating optical element and the multiple beam grating (MBG).
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公开(公告)号：US20040233489A1
公开(公告)日：2004-11-25
申请号：US10443500
申请日：2003-05-21
发明人： Wai-Hon Lee
IPC分类号： G03H001/26
CPC分类号： G02B5/1876 , G03H1/16 , G03H1/268 , G03H2210/22
摘要： An improvement to the above described techniques for producing a holographic stereogram. The present invention uses a hologram lens in the process of creating the holographic stereogram, and also uses Fourier transforms of the images for projection onto the recording medium, not the images themselves. A lens between the generated images and the recording medium performs the inverse Fourier transform to convert the image back into a normal image.
摘要翻译： 上述用于制造全息立体图的技术的改进。 本发明在创建全息立体图的过程中使用全息透镜，并且还使用图像的傅立叶变换来投影到记录介质上而不是图像本身。 所生成的图像和记录介质之间的透镜执行逆傅里叶变换，以将图像转换回正常图像。
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