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Optical detection device, and apparatus using same

一种检测装置、光学式的技术，应用在光学装置勘探、测量装置、光学辐射测量等方向，能够解决轴外像差等问题，达到抑制轴外像差、低成本化、抑制灵敏度的降低的效果

Inactive Publication Date: 2013-04-03
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in a Fresnel lens in which the shape of each lens surface on the exit surface is rotationally symmetric with the normal line of the incident surface as the axis of rotation, when each lens surface is approximated by the side surface of the truncated cone, when using the external direction Off-axis aberration occurs in the case of incident light (such as infrared rays) incident obliquely on the first surface

Method used

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  • Optical detection device, and apparatus using same
  • Optical detection device, and apparatus using same
  • Optical detection device, and apparatus using same

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Embodiment Construction

[0081] In the following, for the optical detection device, first based on Figure 1A ~ Figure 6B Be explained.

[0082] The optical detection device A includes: a multi-segmented lens 1 combining multiple lenses 101 with the same focal position F of each lens 101; That is, the multi-segmented lens 1 constitutes a condensing optical system that condenses infrared rays. In addition, the plurality of lenses 101 are combined so as to be located on the same surface.

[0083] This optical detection device A detects the movement of an object emitting infrared rays (for example, a person) and outputs a detection signal. Here, the optical detection device A uses a pyroelectric infrared detection element as the infrared light receiving element 3 .

[0084] Infrared sensor 2, except possessing infrared light receiving element 3, also possesses: amplifying part 4, amplifies the output signal of infrared light receiving element 3; Judgment part 5, compares the voltage signal and the thr...

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Abstract

In the present invention, each lens of a multi-segment lens is a Fresnel lens in which a second surface opposite to a first surface has a plurality of lens surfaces. At least one of the lens surfaces among the plurality of lens surfaces is constituted from part of a side surface of an elliptical cone having a central axis oblique to the normal line of the first surface. In the lens, any normal line among the normal lines of each point on the first surface and intersecting with the lens surface comprising the part of the side surface of the elliptical cone is non-parallel to the central axis of the elliptical cone corresponding to the lens surface with which the normal line intersects.

Description

technical field [0001] The present invention relates to an optical detection device and equipment using the optical detection device. Background technique [0002] In the past, as an optical detection device, an optical detection device for detecting the amount of change of infrared rays emitted from the human body within a predetermined detection area and controlling equipment such as lighting fixtures has been proposed (for example, Japanese Patent No. 3090336 Gazette and Japanese Patent No. 3090337 Gazette). [0003] The optical detection devices described in the above two documents include: a multi-segment lens (multi-segment lens), in which a plurality of lenses having approximately the same focus position are combined on one plane; and an infrared detection element as a light receiving element arranged at the focus position. element. In addition, the above two documents describe the case of using a structure in which four light receiving units (element units) are arr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/02G01J1/04G01V8/12
CPCG01J1/0407G01J1/0266G01J5/0025G01J1/0411G01J5/0806G02B3/08G08B13/193G01J1/02G01J1/04G01V8/12
Inventor 大井香菜西川尚之
Owner PANASONIC INTPROP MANAGEMENT CO LTD