TOF camera
A camera and lens unit technology, applied in instruments, televisions, and re-radiation, etc., can solve problems such as data reliability reduction, inaccurate images, information loss, etc., to achieve the effect of improving accuracy and reliability, and easy to understand
Pending Publication Date: 2022-04-08
LG INNOTEK CO LTD
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Problems solved by technology
Therefore, there may be a problem that an image is not acquired due to the occurrence of the light saturation phenomenon or an inaccurate image is generated due to insufficient information being acquired
In addition, since the same light pattern is always used, there is a problem that the camera cannot be adaptively driven according to the capture purpose and power consumption cannot be effectively controlled
In addition, when the reflected light is received, the information of the peripheral part may be lost at the receiving end, and thus there is a problem that data reliability may be reduced
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[0049] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0050] However, the technical spirit of the present invention is not limited to the embodiments to be disclosed below, but can be implemented in many different forms, and one or more of each embodiment can be selectively combined and replaced within the scope of the present invention element.
[0051] Also, unless explicitly and clearly defined herein, terms (including technical and scientific terms) used in the embodiments of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be interpreted to have meanings consistent with their meanings in the context of the related art.
[0052] In addition, the terms used in the embodiments of the present invention are...
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A ToF camera according to an embodiment of the present invention comprises: a light source unit including an infrared light emitting device array and generating a light signal; a lens unit disposed above the light source unit and including a plurality of lenses; and an adjustment unit that adjusts the lens unit such that a light pattern of the light signal that has passed through the lens unit becomes surface illumination or point illumination including a plurality of point patterns, in which the lens unit has a distortion aberration that forms a barrel distortion in which an irradiance of the light pattern decreases with a distance from a center.
Description
technical field [0001] Embodiments relate to time-of-flight (ToF) cameras. Background technique [0002] Three-dimensional (3D) content is applied not only to game and cultural fields but also to various fields such as education, manufacturing, autonomous driving, etc., and a depth map is required to obtain 3D content. The depth map is information indicating a distance in space, and indicates perspective information of one point with respect to another point in a two-dimensional (2D) image. As a method of obtaining the depth map, a method of projecting infrared (IR) structured light onto a subject, a method of using a stereo camera, a time-of-flight (ToF) method, and the like are used. [0003] In the case of the ToF method or the structured light method, light in the IR wavelength region is used. Recently, attempts have been made to use characteristics of the IR wavelength region in biometric authentication. For example, it is known that the shape of veins distributed in...
Claims
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IPC IPC(8): H04N5/225H04N13/271G02B7/02G02B27/00
CPCG01S17/894G01S7/4815G02B27/0927G02B3/0087G02B9/34G02B3/14H04N13/271H04N23/56H04N23/55H04N13/254H04N13/246G02B7/04G02B3/12H04N13/296G01S7/4865
Inventor 朴康烈
Owner LG INNOTEK CO LTD