Distance measurement device and distance measurement method

A distance measuring device and a distance technology are applied in the optical distance measuring device and the distance measuring field, and can solve the problems of increased manufacturing cost of the distance measuring device, unfavorable energy saving and environmental protection and the like

Active Publication Date: 2015-06-17
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of high-power light-emitting elements will lead to an increase in the production cost of existing distance measuring devices, and it is also not conducive to energy saving and environmental protection

Method used

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  • Distance measurement device and distance measurement method
  • Distance measurement device and distance measurement method
  • Distance measurement device and distance measurement method

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Embodiment Construction

[0043] figure 1 It is a three-dimensional schematic diagram of a distance measuring device according to an embodiment of the present invention. Please refer to figure 1 , the distance measuring device 100 of this embodiment has a detection range 101 for measuring the distance of at least one object within the detection range 101 . The ranging device 100 includes a light emitting element 110 , a diffusing element 120 , an adjusting element 130 and an image sensing element 140 . The light emitting element 110 emits a light beam 112 . The diffusing element 120 is disposed on the transmission path of the light beam 112, and converts the light beam 112 into a distance-measuring light beam 112a with a specific pattern to irradiate an object. The adjusting element 130 adjusts the incident position and incident angle of the light beam 112 incident on the diffusing element 120 . The image sensor 140 has a field of view 142 covering the detection range 101 .

[0044] The light-emit...

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Abstract

A distance measurement device has a measurement range, is used for measuring the distance of at least one object in the measurement range, and comprises a lighting element, a dispersing element, an adjusting element and an image sensing element, wherein the lighting element emits a light beam; the dispersing element is arranged on a path for transmitting the light beam and converts the light beam into a distance measurement light beam with a specific pattern, and the distance measurement light beam is irradiated onto the object; the adjusting element is used for adjusting the incidence position and the incidence angel of the light beam emitted to the dispersing element; and the image sensing element is provided with a field which covers the detection range. The distance measurement device has a longer measurement distance. The invention also provides a distance measurement method adopting the distance measurement device, and another distance measurement device.

Description

technical field [0001] The present invention relates to a distance measuring device, and in particular to an optical distance measuring device and a distance measuring method. Background technique [0002] In recent years, three-dimensional distance measuring devices have been widely used in distance measurement. The principle is to send out a specific measuring beam with the help of a laser emitter, and then use an image sensor to sense the optical information of the measuring beam (such as sensor Measure the time of the beam, the position of the beam, the shape of the beam, the size of the beam, the intensity of the beam, the phase of the beam, etc.), so as to analyze the distance of each object within the detection range of the three-dimensional ranging device. [0003] The detectable distances of existing distance measuring devices are all fixed and cannot be changed. However, in practical applications, depending on the application environment, it is often necessary to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C3/00
CPCG01C3/00
Inventor 杨恕先陈信嘉古人豪黄森煌
Owner PIXART IMAGING INC
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