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Biological information detector, biological information measuring device

A technology of biological information and detectors, applied in the direction of measuring devices, photometry, instruments, etc., can solve the problem of reduction and achieve the effect of reducing the impact

Inactive Publication Date: 2015-04-22
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As in Patent Document 1, for example, only by adjusting the focal length of the reflective surface, the influence of the reflected light (directly reflected light) reflected on the surface side of the light-transmitting member (window portion) cannot be avoided (that is, the light output from the light-receiving element). S / N reduction of the detection signal, etc.)

Method used

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  • Biological information detector, biological information measuring device
  • Biological information detector, biological information measuring device
  • Biological information detector, biological information measuring device

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0078] First, an outline of the configuration of the living body information detector and the living body information measuring device, an example of the behavior of light emitted from the light emitting unit, and the like will be described.

[0079] (Outline of the structure of the biological information detector, etc.)

[0080] figure 1 of (A), figure 1 (B) is a diagram for explaining an example of the structure of the living body information detector and a preferable design of the reflector. figure 1 (A) shows a state where reflected light (effective light) having biological information enters the light receiving area of ​​the light receiving unit. figure 1 (B) shows how reflected light (directly reflected light: invalid light) on the contact surface side of the contact member constituting the protective portion enters the light receiving region of the light receiving portion. also, figure 1 (A) and figure 1 The living body information detector 200 shown in (B) has the...

no. 2 Embodiment approach

[0178] In this embodiment, the reflection surface of the reflection unit is constituted by a part of a paraboloid which is a quadric surface. In the above-disclosed embodiments, the reflection surface of the reflection unit is constituted by a quadric spherical surface, but the reflection surface may also be constituted by an aspherical surface (that is, a paraboloid).

[0179] A paraboloid of revolution can be used as the paraboloid. A paraboloid of revolution is a quadric surface obtained by rotating a parabola around the axis of symmetry, that is, the z axis, when the z axis among the mutually perpendicular x, y, and z axes that define a three-dimensional space is used as the optical axis (using x , y, z surface expressed by the quadratic equation of 3 yuan).

[0180] Figure 17 (A) and Figure 17 (B) is a figure for demonstrating the reflection surface (parabolic mirror) which consists of a part of paraboloid. like Figure 17 As shown in (B), when the z-axis among the...

no. 3 Embodiment approach

[0202] In this embodiment, a living body information measurement device including a living body information detector will be described. Figure 22 It is a diagram showing an appearance example of an example (wrist pulse meter) of a living body information measuring device including a living body information detector. The biological information measurement device 300 further includes a wristband 150 for attaching the biological information detector 200 to the detected site 1 of the subject (human body) 2 , that is, the arm (wrist in a narrow sense).

[0203] exist Figure 22 In the example of , the biological information is the pulse rate, and the pulse rate “72” as the measurement result is displayed on the display unit 165 included in the biological information measurement device 300 . In addition, the biological information measurement device 300 also serves as a wristwatch. The time (for example, 8:15 AM) is displayed on the display unit 165 included in the biological infor...

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Abstract

To reduce the effect of directly reflected light on a contact-surface side of a contact member, a biological information detector includes a light-emitting part, a light-receiving part, a reflecting part, a protecting part for protecting the light-emitting part, and a substrate. The protecting member is formed from a material that is transparent with respect to a wavelength of the light emitted by the light-emitting part and has a contact member provided with a contact surface in contact with the detection site. Light emitted from the light-emitting part is inhibited from reflecting once on a contact-surface side of the contact member of the protecting part and being incident on a light-receiving region of the light-receiving part.

Description

technical field [0001] The present invention relates to a living body information detector, a living body information measuring device, a design method of a reflection part in the living body information detector, and the like. Background technique [0002] The biological information measuring device measures biological information such as a person's pulse rate, oxygen saturation in blood, body temperature, and heart rate. An example of the biological information measuring device is a pulsometer that measures the pulse rate. In addition, biological information measurement devices such as pulse meters may be incorporated in electronic equipment such as timepieces, mobile phones, pagers, and personal computers, or may be combined with electronic equipment. The biological information measurement device has a biological information detector that detects biological information. The biological information detector includes: a light emitting unit that emits light to a detected part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/024A61B5/0245A61B5/1455G01J1/02G01N21/35G01N21/3563G01N21/359G01N21/49
CPCA61B5/02438A61B5/14552G01N2201/064G01N21/49A61B5/02444A61B5/681G01N21/474A61B5/02427A61B5/0059A61B5/02055A61B5/7278A61B2562/0219A61B2562/0238
Inventor 山下秀人饭岛好隆
Owner SEIKO EPSON CORP
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