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Distance measuring device

A distance measuring device and a technology for measuring light, which can be used in measuring devices, radio wave measurement systems, reradiation of electromagnetic waves, etc., and can solve problems such as resolution reduction

Pending Publication Date: 2020-03-06
ORMON CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is possible to group several light-receiving parts together and provide only one evaluation circuit per group of light-receiving parts, but in this case the resolution will be reduced

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0038] figure 1 An example of an optical system 20 including the distance measuring device 1 and the measuring object 2 according to the first embodiment is shown. The distance measuring device 1 of this embodiment is configured as a photoelectric sensor, and is a distance determining device for determining a distance from a measuring object 2, which is also referred to as "object 2" hereinafter. The distance of object 2 from distance measuring device 1 is characteristic of object 2 . The distance measuring device 1 includes: a light emitting part 3 , a light receiving part 4 , four determining parts 11 , a collimator 6 and a converging lens 7 .

[0039] The light emitting section 3 is a laser light source that emits pulsed light at a predetermined frequency and at a predetermined intensity. The light emitted by the light emitting part 3 passes through the collimator 6 when leaving the distance measuring device 1 . The collimator 6 forms the light emitted by the light emitt...

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PUM

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Abstract

A distance measuring device (1) includes a light emission portion (3) configured to emit light (8); a light receiving portion (4) configured to receive measurement light (5) that is emitted by the light emission portion (3) and reflected by the measurement object (2), the light receiving portion (4) comprising a plurality of pixels (10) configured to output light reception signals (LR) that dependon the received measurement light (5); a plurality of determination portions (11, 111 - 117) configured to receive the light reception signals (LR) and to determine characteristic values from the received light reception signals (LR), and an evaluation portion (13) that is connected to the plurality of determination portions (11, 111 - 117), the evaluation portion (13) being configured to calculate a distance from the characteristic values determined by the determination portions (11, 111 - 117). Each of the plurality of determination portions (11, 111 - 117) is configured to receive the light reception signals (LR) from a plurality of non-adjacent pixels (10).

Description

technical field [0001] The present invention relates to a distance measuring device, and more particularly, to a distance measuring device including a light receiving section having a plurality of pixels. Background technique [0002] There is known a sensor that detects a distance from an object in which measurement light is incident on a light receiving area constituted by an array of light receiving elements or pixels. By increasing the number of light receiving parts, the distance detection resolution of this sensor can be increased. However, if the number of light-receiving components is increased, corresponding evaluation circuits for evaluating the signals generated by the light-receiving components also need to be provided. The more light-receiving components there are, the larger the evaluation circuit becomes. [0003] If an evaluation circuit is provided for each light receiving part, the required space becomes large. It is possible to group several light-recei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/10G01S7/481G01S7/4865
CPCG01S17/10G01S7/4816G01S7/4865G01S7/4863G01S7/4868H01L27/14643H01L31/107
Inventor 松井勇树中室健F·扎帕F·维拉R·卢萨纳
Owner ORMON CORP