WO2019163101A1

WO2019163101A1 - Sleep-inducing wearable device

Info

Publication number: WO2019163101A1
Application number: PCT/JP2018/006733
Authority: WO
Inventors: 脩奥谷
Original assignee: 株式会社Ｌｕｃｉ
Priority date: 2018-02-23
Filing date: 2018-02-23
Publication date: 2019-08-29

Abstract

A wearable device (1) includes an optical member (2), and a wearable portion (3). The optical member (2) is located in a site of a user's field of view and includes a bandpass filter that, out of the incident ambient light, transmits light of a specific wavelength region which induces sleep. The bandpass filter has a peak wavelength region of 430 to 550 nm, and transmits very narrow band light that has a half-value width of 10 nm or less. Additionally, the bandpass filter has a configuration in which a dielectric multilayer and a color filter are stacked together. The color filter cuts transmitted light of the dielectric multilayer that has shifted to a shorter wavelength depending on the incident angle of the light.

Description

Wearable device for inducing sleep

The present invention relates to a wearable device that optically induces human sleep.

Conventionally, it is known that light in a specific wavelength region has an action of inducing a human sleep. For example, Patent Document 1 discloses a sleep induction device that guides a person to sleep by irradiating the entire face of the person with light of a specific wavelength band that induces sleep. According to Patent Document 1, it is described that ultra narrow band light from blue to green having a peak wavelength range of 430 to 550 nm and a half width of 10 nm or less has an action of inducing sleep. , Generated by LED light source and bandpass filter. This ultra-narrow band light is irradiated toward the human body after being adjusted by a diffusion lens so that the illuminance at the position of the human eye is 1 to 300 lux.

Further, although not related to optical sleep induction, Patent Document 2 discloses dental plaque observation glasses for observing dental plaque adhering to the tooth surface. The glasses have a light source and a lens unit. The light source emits light in the wavelength region of 380 to 450 nm to irradiate the teeth. The lens unit is provided with a long pass filter that transmits light having a wavelength longer than 500 nm and blocks light having a wavelength shorter than 500 nm. By providing this long pass filter, it is possible to effectively observe plaque while preventing harmful light from entering the eyes.

Japanese Patent No. 5515015 JP 2017-93479 A

In recent years, due to the development or popularization of long-distance transportation networks such as railways, express buses, and airplanes, opportunities for long-term travel are becoming common regardless of business or private. In such a current situation, there are many cases where sleep is desired in a moving vehicle or in a cabin, and cases where sleep is desired. However, since the interior lighting of the interior of the vehicle is bright, it is difficult to say that it is a light environment in which sleep can be appropriately taken. In this regard, the above-described sleep inducing device of Patent Document 1 is a special and dedicated device for inducing sleep, so that it is not possible to enjoy the action of inducing sleep unless this device is installed.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a wearable device for inducing sleep that can induce sleep without requiring a special light source and can be carried anywhere. It is.

In order to solve this problem, the present invention includes an optical member that is located in a user's field of view and includes a band-pass filter that transmits light in a specific wavelength range that induces sleep in incident ambient light. A wearable device for inducing sleep.

Here, in the present invention, it is preferable that the bandpass filter transmits ultra-narrow band light having a peak wavelength range of 430 nm to 550 nm and a half-value width of 10 nm or less. The bandpass filter has a configuration in which a dielectric multilayer film and a color filter are laminated. The color filter cuts the transmitted light of the dielectric multilayer film shifted to the short wavelength side according to the incident angle of light.

In the present invention, the optical member preferably has a substantially spherical surface shape. Further, a light shielding member may be further provided that protrudes toward the user's head so as to cover the whole or a part of the optical member and shields ambient light other than the incident light on the bandpass filter.

According to the present invention, only light in a specific wavelength range that induces sleep is extracted from ambient light such as illumination light and sunlight through a bandpass filter provided in the wearable device, and is made incident on the user's eyes. Thus, even without a special light source, it is possible to appropriately induce sleep using ambient light, and it can be easily carried to any place.

External view showing a first example of a wearable device External view showing a variation of the wearable device according to the first example External view showing a second example of a wearable device External view showing a third example of a wearable device External view showing a fourth example of a wearable device External view showing a fifth example of a wearable device External view showing a sixth example of a wearable device External view showing a seventh example of a wearable device External view showing an eighth example of a wearable device External view showing a ninth example of a wearable device Explanatory drawing of optical members when wearing wearable device Diagram of transmittance characteristics of dielectric multilayer film Transmission characteristics diagram of optical member combining dielectric multilayer film and color filter

FIG. 1 is an external view showing a first example of a wearable device according to this embodiment. This wearable device 1 has the same shape as general glasses, and is detachably attached to the head of a user (wearer) in order to induce sleep. The wearable device 1 has an optical member 2 and a pair of mounting portions 3, and a light shielding member 4 is added thereto.

The optical member 2 is a translucent member mainly made of plastic or glass, and includes a band-pass filter. The band-pass filter transmits light in a specific wavelength range that induces sleep, and cuts other light out of the incident ambient light. As described in detail in the above-mentioned Patent Document 1, light in a specific wavelength range, specifically, a peak wavelength range of 430 to 550 nm and a half-value width of 10 nm or less from blue to green is extremely narrow. It is known that band light has an effect of inducing human sleep. Based on this knowledge, the bandpass filter transmits only ultra-narrow band light having a peak wavelength range of 430 nm to 550 nm and a half-value width of 10 nm or less. Thereby, even if there is no special light source, it is possible to appropriately guide the user to sleep by using “ambient light”. In this specification, “environmental light” refers to the above-described wavelength that exists in a general environment such as sunlight or illumination light (including light from fluorescent lamps, light bulbs, LED lighting devices, etc.). Light (typically white light) including components other than the region.

The optical member 2 is formed in a substantially spherical surface shape, that is, a spherical lens shape. In order to extract ultra-narrow band light from ambient light, it is necessary to be able to respond flexibly to incident light from various directions. Therefore, in this embodiment, the relative distance to the position of the user's eyes is adjusted by making the optical member 2 substantially spherical. When the optical member 2 has a substantially spherical shape, the incident angle of light with reference to the front (0 degree incidence) is reduced as compared with the case where the optical member 2 has a flat shape, so that incident light closer to vertical can be obtained. This is particularly advantageous from the viewpoint of reducing the peak shift when a dielectric multilayer film described later is used.

The pair of mounting portions 3 are for mounting the wearable device 1 on the user's head, and each of the mounting portions 3 includes a temple 3a and a modern 3b. The temple 3a is appropriately designed in material and shape so as to be softly fitted to various postures during sleep to prevent displacement and detachment and not to give stress to the user. The modern 3b is detachably attached to the temple 3a and can be replaced with a belt 3c shown in FIG. For example, a case in which the modern 3b with a little uncomfortable feeling is used at the time of wearing in a short nap or a seated state, and the belt 3c is used to prevent detachment at the time of wearing for a long time is assumed.

The light shielding member 4 is provided to protrude toward the user's head so as to partially cover the periphery of the optical member 2 (upper part of the optical member 2), and is incident on the optical member 2 (bandpass filter). Block ambient light other than (to prevent light leakage). The light shielding member 4 is made of, for example, urethane foam and softly fits the skin.

3 to 10 are diagrams showing other examples of the wearable device 1, and members having the same functions as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The sports sunglasses type shown in FIG. 3 has an appearance similar to that of sports sunglasses, has a shape that fits the curve of the face, is difficult to shift, has a high degree of sealing, and reduces the intrusion of light from other than the optical member 2 as much as possible. ing. The optical member 2 is provided independently for the left and right eyes. The eyeglass shape of FIG. 4 has an appearance similar to that of eyeglasses, and has a shape in which the optical member 2 (bandpass filter) occupies most of the field of view. The goggle type of FIG. 5 has an appearance similar to that of goggles used in swimming, winter sports, motor sports and the like. The wearable device 1 is provided with a light shielding member 4 formed of a soft material such as urethane foam so as to protrude from the user's head so as to cover the entire periphery of the optical member 2 and has a shape with improved sealing performance. It has become. In addition, a rubber band or the like as the mounting portion 3 is provided in order to prevent displacement and detachment during mounting. The eye mask type of FIG. 6 is made of a soft material having a shape like an eye mask, and is used in close contact with the face, and an optical member 2 (band pass filter) is provided on a part thereof. . In addition, a rubber band or the like as the mounting portion 3 is provided in order to prevent displacement and disconnection during mounting. The screen type of FIG. 7 is a self-supporting type provided with an optical member 2 having a dome shape or similar shape covering the whole or a part of the face in a sleeping state or a sitting state. Since this screen type alone constitutes the wearable device 1, it can be easily carried to any place as in the other examples. The optical member 2 is disposed so as to be positioned in the user's field of view. The contact lens mold of FIG. 8 is constituted by a pair of optical members 2 having a contact lens shape, and has the performance of a pan-pass filter. The hat shape of FIG. 9 is a shape of a hat having a collar part such as a baseball cap or a hat, and a part or the whole of the collar part is constituted by the optical member 2 (bandpass filter). In the seated state, wavelength selection is performed for light from above, and blue light is delivered to the eyes. The hood, mask, and mobile pillow type of FIG. 10 is a hood, mask, and mobile pillow type that covers a part or the whole of the face, and a part or the whole of the hood, mask, and mobile pillow type is configured by the optical member 2 (bandpass filter). .

FIG. 11 is an explanatory diagram of the optical member 2 when the wearable device 1 is mounted. The optical member 2 has a laminated structure mainly composed of a dielectric multilayer film 2a and a color filter 2b, specifically, a structure in which the dielectric multilayer film 2a is deposited on the surface of the color filter 2b. The bandpass filter described above is configured.

The dielectric multilayer film 2a is formed by laminating a plurality of optical thin films (dielectric materials) having different refractive indices, and transmits only a specific wavelength range with a certain wavelength as a central wavelength of the design, and does not transmit the others. Functions as a bandpass filter. In the present embodiment, as an example of the dielectric multilayer film 2a, one having a center wavelength of 490 nm and a half width of 10 nm is used as shown in the transmittance characteristics of FIG. The dielectric multilayer film 2a has such characteristics that the bandpass can be controlled more narrowly and the transmittance is higher than other filters. However, it is known that the dielectric multilayer film 2a has a large dependence on the incident angle of light, and the phenomenon that the wavelength peak shifts to the shorter wavelength side as the inclination (light incident angle) with respect to the incidence of 0 degree becomes larger. (Peak shift) occurs. When the dielectric multilayer film 2a is used alone, a component other than the desired ultra-narrow band light is transmitted due to the peak shift. As a result, the half-value width of the superimposed light is widened. End up. This is not preferable as an optical characteristic of the wearable device 1 used in a situation where the incident direction of light is indefinite.

The color filter 2b is a colored translucent member containing a pigment (for example, a yellow pigment or dye) in a transparent resin or the like, and is a band-pass filter that transmits only a specific wavelength range or transmits light of a specific wavelength or more. Functions as a long-pass filter. The color filter 2b has a lower transmittance than the dielectric multilayer film 2a and has a wider half-value width, but has almost no dependency on the incident angle of light. Therefore, when the color filter 2b is combined with the dielectric multilayer film 2a, the transmitted light of the dielectric multilayer film 2a shifted to the short wavelength side according to the light incident angle can be cut.

FIG. 13 is a transmittance characteristic diagram of the optical member 2 in which the dielectric multilayer film 2a and the color filter 2b as a long pass filter are combined. The color filter 2b transmits a wavelength range of 500 nm or more and substantially cuts a wavelength range of 490 nm or less. When light having an angle is incident on the dielectric multilayer film 2a, it shifts to the short wavelength side, but this wavelength band is cut by the color filter 2b. As a result, as the optical member 2, only the ultra-narrow band light in the overlapping transmission region (wavelength region) of these filters 2a and 2b is extracted and output from the optical member 2, and enters the user's eyes. . Thus, by combining the dielectric multilayer film 2a with the color filter 2b, the peak shift of the dielectric multilayer film 2a can be absorbed and the dependency on the incident angle of light can be reduced, so that desirable optical characteristics as the wearable device 1 are ensured. It becomes possible to do.

The role of the color filter 2b is not limited to the characteristics on the long wavelength side because it only cuts light on the short wavelength side. Therefore, in this respect, a color filter 2b that functions as a bandpass filter instead of a longpass filter may be used. In this case, the peak values of the dielectric multilayer film 2a and the color filter 2b are shifted, and the peak value of the dielectric multilayer film 2a is set closer to the short wavelength. Since the peak of the color filter 2b is not shifted by the light incident angle, the peak-shifted light is hardly transmitted. That is, only light having an incident angle close to 0 ° can be selectively transmitted.

As described above, according to the present embodiment, only light in a specific wavelength range that induces a sleep among ambient light such as illumination light and sunlight is transmitted through the optical member 2 (bandpass filter) included in the wearable device 1. Extract and enter the user's eyes. Thereby, even if there is no special light source which emits the light of the specific wavelength band which induces sleep, it is possible to appropriately induce sleep using ambient light. Moreover, since the wearable device 1 is lightweight and compact, it can be easily carried to any place.

In addition, according to the present embodiment, the band shift filter is configured by combining the dielectric multilayer film 2a and the color filter 2b as a long-pass filter, so that the peak shift of the dielectric multilayer film 2a can be absorbed, and the light Incident angle dependence can be reduced. As a result, it is possible to ensure desirable optical characteristics as the wearable device 1 used in a situation where the incident direction of light is indefinite.

DESCRIPTION OF SYMBOLS 1 Wearable device 2 Optical member 2a Dielectric multilayer film 2b Color filter 3 Mounting part 3a Temple 3b Modern 3c Belt 4 Light-shielding member

Claims

In a wearable device for inducing sleep
A sleep-inducing wearable device comprising an optical member that is located in a user's field of view and includes a band-pass filter that transmits light in a specific wavelength range that induces sleep during incident environmental light.
The sleep-passive wearable device according to claim 1, wherein the band-pass filter transmits ultra-narrow band light having a peak wavelength range of 430 nm to 550 nm and a half width of 10 nm or less.
The bandpass filter is
A dielectric multilayer film;
The wearable device for inducing sleep according to claim 1, further comprising a color filter that cuts the transmitted light of the dielectric multilayer film shifted to the short wavelength side according to the incident angle of light.
The sleepable wearable device according to claim 3, wherein the optical member has a substantially spherical surface shape.
It further has a light blocking member provided so as to protrude toward the user's head so as to entirely or partially cover the periphery of the optical member, and shields ambient light other than incident light to the bandpass filter. The wearable device for inducing sleep according to claim 3.