Optical ranging sensor and warm water wash toilet seat

A distance measuring sensor, optical technology, applied in the direction of measuring distance, using optical devices, instruments, etc., can solve the problem of uncertain distance measurement accuracy between the near side and the far side, and achieve a simple structure and uniform ranging accuracy Effect

Inactive Publication Date: 2007-09-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0038] However, in the above-mentioned PSD, there is a problem that the d...

Method used

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  • Optical ranging sensor and warm water wash toilet seat
  • Optical ranging sensor and warm water wash toilet seat
  • Optical ranging sensor and warm water wash toilet seat

Examples

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no. 1 Embodiment

[0106] FIG. 1 is a schematic diagram showing the basic structure of an optical distance measuring sensor according to a first embodiment of the present invention.

[0107] The optical distance measuring sensor 10 of the first embodiment includes, as shown in FIG. 1 , a light emitting element 11 that emits light; distance object; light-sensing light-sensing mechanism 14, which condenses the reflected light from the above-mentioned distance-measuring object (not shown); photosensitive element 12, which is arranged so that the photosensitive surface is perpendicular to the optical axis of the light emitted from the above-mentioned light-emitting element 11 , to receive the reflected light condensed by the photosensitive light condensing mechanism 14 .

[0108] The light-emitting element 11 is a light source such as a light-emitting diode, and the light emitted from the light-emitting element 11 is collected by the light-projecting light-concentrating mechanism 13 provided on the ...

no. 2 Embodiment

[0139] 3 is a diagram showing a photosensitive surface of a PSD used as a photosensitive element of an optical distance measuring sensor according to a second embodiment of the present invention. In addition, the optical distance measuring sensor of the second embodiment has the same structure as that of the optical distance measuring sensor of the first embodiment except for the PSD, and FIG. 1 is referred to, and description thereof is omitted.

[0140] As shown in FIG. 3 , in the PSD of the optical distance measuring sensor according to the second embodiment, a zigzag-shaped resistance region 22 is formed in the p-layer. This resistance region 22 is designed such that: the line width of the broken line and the turn-back distance are constant, the amplitude length is changed, the resistance value between the first and the second electrodes 15, 16 and the distance from the optical axis of the light-sensing light-collecting mechanism 14 Inversely proportional.

[0141] As the...

no. 3 Embodiment

[0143]FIG. 4 shows a photosensitive surface of a PSD used as a photosensitive element of an optical distance measuring sensor according to a third embodiment of the present invention. In addition, the optical distance measuring sensor of the third embodiment has the same structure as that of the optical distance measuring sensor of the first embodiment except for the PSD, and its description is omitted with reference to FIG. 1 .

[0144] As shown in FIG. 4 , in the optical distance measuring sensor PSD of the third embodiment, a zigzag-shaped zigzag-shaped resistive region 23 is formed from the p- layer. This resistance region 23 is set so that: the line width of the folded line, the amplitude length is constant, the turn-back pitch is changed, the resistance value between the first and the second electrodes 15, 16 and the distance from the optical axis of the light-sensing light-collecting mechanism 14 The distance is inversely proportional.

[0145] In the PSD of the above ...

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Abstract

The present invention provides a optical distance measuring sensor and heating water cleaning toilet, the light receiving device 12 that receives reflected light condensed by a light receiving condenser means 14 has two first and second electrodes 15, 16 provided on a light receiving surface at prescribed intervals along a baseline that connects a light emitting device 11 with the light receiving device and a resistive region 21 provided between the two electrodes. An electric charge generated at the incident position of light incident on the light receiving surface of the light receiving device 12 becomes a photo current and outputted from the first and second electrodes 15, 16 via the resistive region 21 . The resistance value of the resistive region 21 of the light receiving device 12 is distributed so as to be roughly inversely proportional to a distance from the optical axis of the light receiving condenser means 14 to the incident position of a light spot on the light receiving surface.

Description

technical field [0001] The present invention relates to an optical distance measuring sensor, and more particularly, to an optical distance measuring sensor for detecting a distance to a distance measuring object by projecting light and receiving reflected light thereof, and a hot water washing toilet using the same. Background technique [0002] At present, as an optical ranging sensor for detecting the distance from an object, it has the following structure: as shown in FIG. , and detect the distance to the object based on the position of the point light (see JP-A-2003-156328). [0003] The optical distance measuring sensor 100, as shown in FIG. 14 , includes a light emitting element 101 for projecting light onto a distance measuring object; The light-sensing light-collecting mechanism 104 for condensing reflected light; [0004] The above-mentioned light emitting element 101 is a light source such as a light emitting diode, and the light beam emitted from the light emit...

Claims

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Application Information

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IPC IPC(8): G01C3/06G01B11/00E03D9/00
Inventor 石井健太郎大久保勇山口阳史
Owner SHARP KK
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