JP2009028269A - Light irradiating beauty instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform proper beauty treatment corresponding to the elasticity of the skin. <P>SOLUTION: This light irradiating beauty instrument is equipped with a light source part 2 for irradiating the skin with light for the beauty of the skin, a skin elasticity detecting means 3 for detecting the elasticity of the skin irradiated with the light from the light source part 2 and a control means 4 for controlling the light output of the light source part on the basis of the skin elasticity data obtained by the skin elasticity detecting means. The light irradiation is controlled according to the elasticity of the skin. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light-irradiated beauty instrument that irradiates light to the skin for skin beauty.

  There are various types of light-irradiated beauty instruments that aim to beautify the skin by irradiating light, such as those that use laser light as the irradiating light and those that use low-power non-coherent light. In addition, there is one that detects the skin color and controls the light irradiation time according to the skin color (Patent Document 1), and the one that performs feedback control of light irradiation by an inlet signal corresponding to the electromagnetic wave on the skin surface (Patent Document 1) 2).

However, the former has a problem in that it cannot perform light irradiation control according to changes in the state of the skin during light irradiation. Moreover, in the latter, although the feedback control is performed, it is not possible to feed back the change in skin elasticity due to light irradiation.
JP-A-5-146517 JP-A-9-285520

  The present invention has been invented in view of the above-mentioned conventional problems, and can provide a light irradiation beauty that can feed back a change in skin elasticity and perform an appropriate light irradiation beauty according to the state of the skin. It is an object to provide an instrument.

  In order to solve the above problems, a light irradiation beauty instrument according to the present invention detects a light source unit that irradiates skin with light for skin beauty, and detects elasticity of the skin irradiated with light from the light source unit. It is characterized by comprising skin elasticity detection means and control means for controlling the light output of the light source unit based on skin elasticity data obtained by the skin elasticity detection means. Light irradiation according to skin elasticity is made.

  The skin elasticity detection means includes an ultrasonic vibrator that applies vibration to the skin, a vibration measurement unit that measures the vibration frequency of the skin in contact with the skin, and a calculation unit that calculates the skin elasticity from the obtained change in the vibration frequency. Can be suitably used.

  The control means preferably determines whether the skin elasticity detection means is in contact with the skin from the output of the skin elasticity detection means and stops the light output from the light source unit when it is determined that the skin contact is not in contact. .

  In the present invention, since light irradiation is controlled in accordance with changes in skin elasticity caused by light irradiation, it is possible to perform appropriate light irradiation according to changes in the state of elasticity (beam) of the skin.

  Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings. FIG. 1 shows a hand-held light-irradiating beauty instrument, and is attached to one end side of a housing 1 that is formed in a size that can be held by hand. A light source unit 2 and an elastic sensor 3 as skin elasticity detecting means are disposed, and a control unit 4 for controlling light output from the light source unit 2 and a notification unit 5 are disposed in the housing 1. Yes.

  The light source unit 2 includes a light source 20 and a cover 21 made of a light transmissive material disposed in the light irradiation opening. The cover 21 has a lens function such as light collection and light diffusion, and a wavelength. Those having a cutting function can be used. Although what kind of thing may be used as the said light source 20, what outputs the low output non-coherent light is used here.

  In addition, the elasticity sensor 3 is arranged at the periphery of the light irradiation opening and detects the elasticity of the skin by simultaneously contacting the skin when the light irradiation opening is brought into contact with the skin. In this case, as shown in FIG. 2, the natural frequency based on the elasticity of the skin when the ultrasonic vibrator 31 that vibrates ultrasonically is brought into contact with the skin through the silicon sphere 32 is obtained. A frequency change is measured by detecting with the vibration detection element 33 and performing signal amplification and frequency detection, and using an element that calculates the elasticity (viscoelasticity) of the skin from the change in the vibration frequency with a calculation unit (not shown). ing. In this case, vibration stimulation by ultrasonic vibration can be applied to the skin at the same time as measuring the elasticity of the skin, so that blood circulation promotion and waste product discharge can be promoted.

  As shown in FIG. 3, the elastic sensor 3 is provided with an arm 34 rotatably supported and provided with a hammer 35 and a balance weight 36, and when the hammer 35 strikes the skin surface. Skin elasticity may be obtained by optically detecting the movement of the arm 34 (hammer 35). 4A shows the movement of the hammer 35 when hitting the elastic skin, and FIG. 4B shows the movement of the hammer 35 when hitting the hard skin having low elasticity.

  If the light irradiation opening is pressed against the skin where the light is to be irradiated and the switch is turned on, first the skin elasticity detection operation by the elastic sensor 3 is performed, and the notification unit 5 is activated prior to this detection operation. Then, it is notified that the skin elasticity detection operation is performed. When the skin elasticity detection operation is completed, light irradiation with light irradiation intensity based on the obtained skin elasticity data is performed. At this time, if the measured skin elasticity is inferior to the standard skin condition, for example, the light irradiation intensity from the light source unit 2 is 1.5 times the normal, and if there is sufficient elasticity, the light irradiation intensity is Reduce.

  The skin elasticity detection operation may be performed at predetermined time intervals even during light irradiation to observe changes in skin elasticity and adjust the light irradiation intensity according to the result.

  In addition, the skin elasticity detection interval shall be detected at least 1 second or less, or when the detected natural frequency change is almost zero, the light irradiation output is stopped as the light irradiation opening is separated from the skin. You may make it make it. If the light-irradiating opening is separated from the skin, light will leak out and this light may hurt your eyes. At this time, the light irradiation is stopped, which increases safety. In addition, the risk of mis-irradiation can be prevented without adding a separate safety device sensor.

  If the portion that comes into contact with the skin is made of an elastic material that follows the uneven shape (including the curved surface) of the skin except for the portion of the elastic sensor 3, for example, urethane sponge, light is prevented from leaking further. be able to.

It is a schematic sectional drawing of an example of embodiment of this invention. It is sectional drawing which shows an elastic sensor same as the above. It is sectional drawing which shows the other example of an elastic sensor same as the above. (a) (b) is explanatory drawing which shows the example of the hammer position detection output in an elastic sensor same as the above.

Explanation of symbols

2 Light source unit 3 Elastic sensor 4 Control unit 5 Notification unit

Claims (3)

  Light source for irradiating skin with light for skin beauty, skin elasticity detecting means for detecting elasticity of skin irradiated with light from light source, and skin elasticity data obtained by skin elasticity detecting means And a control means for controlling the light output of the light source unit based on the above.   The skin elasticity detection means includes an ultrasonic vibrator that applies vibration to the skin, a vibration measurement unit that measures the vibration frequency of the skin in contact with the skin, and a calculation unit that calculates the skin elasticity from the obtained change in the vibration frequency. The light irradiation cosmetic device according to claim 1, wherein:   The control means determines whether or not the skin elasticity detection means is in contact with the skin from the output of the skin elasticity detection means and stops the light output from the light source unit when it is determined that the skin elasticity detection means is not in contact. The photoirradiation cosmetic device according to claim 1 or 2.

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