JP4711981B2 - Functional optical device - Google Patents

Description

  The present invention relates to a functional optical device, and more particularly, to a functional optical device that can freely increase or decrease the intensity of light in a specific wavelength region.

  There are various effects of light in a specific wavelength range, that is, so-called color light, on a living body such as a human body. Colored light of a specific wavelength is applied to the treatment and cure of specific diseases such as light therapy, color therapy, and light puncture. In addition, it is known that color coordination using colored light affects not only yourself but also the surroundings as well as various things including not only the field of design and amusement but also business scenes. Colored light is actively used in the scene.

  As a clue to the influence of such colored light, there is a light-tonus value that represents the degree of tension of muscle tissue with respect to light. The larger the value, the higher the muscle tone, and the smaller the value, the lower the muscle tone. Therefore, it is considered that the smaller the stress is, the less the stress on the human body is. The light tonus value in a normal state is 23, whereas it is blue 24, green 28, yellow 30, orange 35, and red 42. If only the primary colors are compared, the light tonus value increases as the wavelength increases. It can be said that there is a tendency to become.

  At the same time, the effects of colored light on the human body include, for example, red affects circulation and metabolic functions, yellow affects stomach, pancreas, and liver functions, and purple stimulates the lymph system. The impact is known. Of course, light such as sunlight has energy in a wavelength range other than visible light. For example, heat and heat retention due to absorption of infrared light into the skin, and ultraviolet light skin including sunburn. The adverse effects of are well known.

  Further, conventionally, there is known a technique that light irradiation at night especially affects the suppression of melatonin secretion and can adjust the biological rhythm. In this regard, the relationship with the wavelength component is described in Non-Patent Document 1, etc. It has been reported. Non-Patent Document 1 reports an action spectrum showing wavelength characteristics as shown in FIG. Here, melatonin secretion suppression sensitivity is highest around a wavelength of 460 nm.

  Furthermore, it is known as an effect on living bodies other than the human body, for example, when reptiles and the like are exposed to ultraviolet light, particularly light in a wavelength range of 290 to 320 nm called UV-B, vitamin D is synthesized in the body and calcium. This is because the metabolism and absorption efficiency of UV-C and UV-C (260-290 nm) having a short wavelength have many adverse effects on the living body and are used for germicidal lamps.

  In addition, insects are observed to move along the direction of light in response to an external light stimulus called phototaxis, and according to this behavior pattern, the insects have a photosensitivity of 300 to 600 nm. Insect behavior can also be controlled by controlling. For example, in orchards and the like, yellow fluorescent lamps that block light with a wavelength of 500 to 550 nm or less by light control of phosphors and filters are sucking oysters such as Akebiko no Ha, Giant Eglyba, Red Eglyba, etc. It is used to control pests such as Spodoptera spp.

  In addition, the effects of colored light on living organisms are known to be related to plants.Generally, red light is suitable for photosynthesis, blue light is suitable for the formation of the plant form, and green light is the color of leaves. It is said to be suitable for thickening and strengthening. Utilizing such characteristics, a technique for efficiently promoting and suppressing the growth of plants at the cultivation stage and increasing specific nutrients at the storage stage of a refrigerator or the like has been put into practical use.

For example, Patent Literature 1 discloses a technique that utilizes the action of light in a specific wavelength range, which includes a plurality of light emitters including a light emitter that emits light having a wavelength that affects biological rhythm. An image display device that performs biological rhythm adjustment by controlling intensity is disclosed.
Patent Document 2 discloses a pseudo-sunlight irradiation device that increases or decreases light energy in a desired wavelength range by controlling the amount of output light using a plurality of light sources having different emission wavelengths.
Furthermore, Patent Document 3 discloses an illumination device that includes a filter that blocks spectral components in the wavelength range of 480 to 505 nm, thereby avoiding melatonin secretion suppression and preventing sleep onset.

However, in the techniques of Patent Document 1 and Patent Document 2, since intensity control is performed with each light source having a different wavelength, a complicated control means is required, and a structure that can use an external light source such as a general fluorescent lamp or sunlight. It wasn't. Therefore, an optical member technique added to the light source has been proposed as in Patent Document 3 that uses a filter that cuts off a specific wavelength component.
WO2004 / 086616 JP 2004-166511 A JP 2006-259079 A "Action Spectrum for Melatonin Regulation in Humans: Evidence for a Novel Circadian Photoreceptor", Brainerd et al, 2001

  As a technique that can control the influence of light on the human body by using fluorescent lamps, incandescent bulbs, sunlight, etc., which are generally used in the past, as described in Patent Document 3, a filter is used as a light source. There has been proposed an optical member technique for adding the above. However, since this filter only has a function of attenuating a spectral component in a specific wavelength region to a certain amount or less, it is possible to reduce or eliminate the influence of light in the specific wavelength region on the human body. However, it was not always sufficient for the purpose of actively using the light.

  In consideration of the above-mentioned problems, the present invention can freely increase / decrease light in a specific wavelength range with a simple system configuration utilizing conventional general illumination light sources such as fluorescent lamps, incandescent lamps, sunlight, etc. Thus, an object of the present invention is to provide a functional optical device that can positively use or eliminate the influence of the light on the living body in general.

In order to solve the above problems, the first technical means of the present invention includes an optical filter that acts on incident light from the outside to attenuate or block light in a predetermined specific wavelength range, and light in a specific wavelength range. A light source that emits light and a control unit that controls the light emission intensity of the light source. The light emitted from the optical filter and the light emitted from the light source are mixed and emitted , and function according to the control of the control unit. It is possible to control the amount of light emitted from a specific wavelength region emitted from the directional optical device .

  A second technical means includes a light guide plate for diffusing light emitted from the light source in the first technical means, and the light emitted from the optical filter and the light emitted from the light source are mixed by the light guide plate. It is what.

  A third technical means uses an LED that emits light in a specific wavelength region as a light source in the second technical means, and makes light emitted from the LED incident on the light guide plate from the side of the light guide plate. The light emitted from the optical filter is made incident on the light guide plate from the back side, and the light emitted from the LED and the light emitted from the optical filter passing through the light guide plate are mixed.

  According to a fourth technical means, in the second technical means, an LED that emits light of a specific wavelength region is used as a light source, the LED is arranged on the surface of the light guide plate, and the optical filter from the back side of the light guide plate is used. The emitted light is incident on the light guide plate, and the emitted light from the LED and the emitted light from the optical filter passing through the light guide plate are mixed.

  A fifth technical means uses a transparent flat plate light emitting element which is a transparent surface light source as a light source in the first technical means, and allows light emitted from the optical filter to enter the transparent flat light emitting element from the back side of the light guide plate. The light emitted from the transparent flat plate light-emitting element and the light emitted from the optical filter passing through the light guide plate are mixed.

  A sixth technical means is the light source according to the first technical means, wherein the light source emits light in a wavelength range including at least the specific wavelength range, and reflects light in the specific wavelength range as an optical filter, and the specific wavelength It has a dichroic mirror that transmits light in the wavelength range other than the wavelength range, and the dichroic mirror reflects light in a specific wavelength range out of light emitted from the light source, and excludes the specific wavelength range in incident light from the outside. The light of the region is transmitted, and the reflected light and the transmitted light are mixed and emitted.

  A seventh technical means is the light source according to the first technical means, wherein the light source emits light in a wavelength range including at least the specific wavelength range, and reflects light in the specific wavelength range as an optical filter, and the specific wavelength A dichroic prism that transmits light in a wavelength range other than the wavelength range. The dichroic prism reflects light in a specific wavelength range out of light emitted from the light source, and a wavelength excluding the specific wavelength range in incident light from the outside. The light of the region is transmitted, and the reflected light and the transmitted light are mixed and emitted.

The eighth technical means includes a light quantity detection unit that detects the quantity of incident light from the outside that acts on the optical filter in any one of the first to seventh technical means, and the control unit detects the light quantity detection unit. The light emission intensity of the light source is controlled according to the result.

A ninth technical means includes a time information acquisition unit that acquires current time information in any of the first to seventh technical means, and the control unit is based on the time information acquired by the time information acquisition part. Thus, the emission intensity of the light source is controlled.

The first 0 of technical means is the first to seventh any technical means of the measures and the ambient temperature on the side where incident light from the outside is incident, and a temperature on the side of the atmosphere to emit light light mixing A temperature measuring unit is provided, and the control unit controls the light emission intensity of the light source based on the temperature information measured by the temperature measuring unit.

First first technical means is any one of the technical means of the first to 1 0, the optical filter, the light transmittance in a wavelength range other than the specific wavelength range, than the transmittance of light in a specific wavelength range It is characterized by being large.

  According to the present invention, the light of a specific wavelength range is controlled in detail by a simple system configuration using a conventional general illumination light source, such as a fluorescent lamp, an incandescent bulb, and sunlight. It can be possible to positively use or eliminate the influence of the human body on the living body in general.

  That is, according to the present invention, there is no need to prepare a special light source or a lighting fixture in advance, and artificial light sources such as fluorescent lamps, incandescent lamps, HID lamps, light emitting diodes, and fluorescent display tubes that have been conventionally used in general. By utilizing a natural light source such as the sun and the moon, by making a simple system configuration, it is possible to increase / decrease control of spectral components that have a specific influence on the living body, in particular, light in a specific wavelength range, It is possible to positively utilize the influence of the light in the specific wavelength range on the living body, or to eliminate or reduce the influence.

In particular, by installing the functional optical device of the present invention in a daylighting part such as a window of a building, it becomes possible to control light in a specific wavelength range included in sunlight or moonlight, so that it is simple and inexpensive and energy consuming. A small number of light control systems can be constructed.
In addition, since the existing light source can be used as it is by using the functional optical device of the present invention, a desired function can be obtained simply by adding the functional optical device without replacing the light source. Of course, even if the light source is located in a place where it is difficult to replace, the light in a specific wavelength region emitted by the light source can be used.

  In addition, since the functional optical device according to the present invention has a small influence on light components other than the specific wavelength region, a plurality of functional optical devices can be used in an overlapping manner as necessary. In this case, it is possible not only to control the influence of light on multiple living organisms, but also to adjust the spectral distribution of the light of the original light source in detail, so that the spectral distribution depends on the biological species exposed to the light and its state. By designing, it is possible to realize various functions, and it is possible to easily realize various light controls such as white light color temperature adjustment and lighting fixture color rendering control.

FIG. 1 is a block diagram for explaining a configuration example of a functional optical device according to the present invention.
The functional optical device 10 includes an operation unit 13 that can be manually operated or remotely operated by a user. When the operation information that instructs the operation unit 13 to increase or decrease the light in the specific wavelength range is input, the control unit 14 converts the operation information into light amount control information. The light amount control information is information for controlling the light amount of light emitted from the light source unit 15 to a predetermined value.
Based on the light amount control information from the control unit 14, the light source unit 15 controls the light in the specific wavelength region to emit light by being controlled to a predetermined light amount, and enters the light mixing unit 12.

On the other hand, when incident light having an arbitrary spectral spectrum incident from an external light source is incident on the functional optical device 10, the light in the specific wavelength region is attenuated or blocked by the optical filter unit 11 and incident on the light mixing unit 12. To do.
The light mixing unit 12 includes a light guide plate, a gap, or a dichroic mirror or prism that controls an outgoing light path according to a wavelength range. The light mixing unit 12 emits light in a specific wavelength range emitted from the light source unit 15 and the optical filter unit 11. The light that has passed through is mixed to produce substantially uniform light, which is emitted to the outside of the functional optical device 10.

  With such a configuration, when it is desired to actively utilize light in a specific wavelength range, only light in the specific wavelength range can be increased by performing a predetermined operation input to the operation unit 13. Conversely, when it is desired to attenuate or block light in a specific wavelength region, only the light can be reduced or made zero by the same operation.

  That is, by using the functional optical device 10 having the above-described configuration, it is possible to increase / decrease the light component in a specific wavelength range that acts on an object to be illuminated, particularly a living body, and realizes various functions. For example, if this functional optical device 10 is installed on a window glass, the spectrum of sunlight, moonlight, etc. can be controlled, and if it is installed in front of an existing ceiling light, etc., light in a specific wavelength range can be used as necessary. The component can be increased or decreased.

FIG. 2 is a flowchart for explaining an example of the operation of the functional optical device according to the present invention, and shows an operation example in the functional optical device 10 having the configuration shown in FIG. Here, description will be made with reference to the configuration of FIG.
First, when the operation unit 13 acquires operation information instructing increase / decrease of light in a specific wavelength region (step S1), the control unit 14 converts the operation information into light amount control information of the light source unit 15 (step S2). Then, the light source unit 15 emits a predetermined light amount of light in a specific wavelength region based on the light amount control information generated by the control unit 14 (step S3).

  On the other hand, the optical filter unit 11 attenuates or blocks light in a specific wavelength region from outside incident light (step S5). And the light mixing part 12 mixes the light from the optical filter part 11 and the light from the light source part 15 substantially uniformly, and radiate | emits it from the functional optical apparatus 10 (step S4).

  FIG. 3 is a block diagram for explaining another configuration example of the functional optical device according to the present invention. The functional optical device 10 of this example includes a photometry unit 16 that is a light amount detection unit that measures incident light from the outside in addition to the configuration of FIG. The photometry unit 16 includes a spectral illuminometer or the like, measures the spectral spectrum of incident light from the outside, particularly the light amount (light intensity) in a specific wavelength region to be controlled, and inputs the obtained light amount information to the control unit 14. The control unit 14 converts the light amount information into light amount control information of the light source unit 15 and adjusts the light amount of the light source unit 15 to be substantially the same as the light amount in the specific wavelength region of the external light. As a result, the functional optical device 10 can emit light that does not change the spectral spectrum and color of the incident light from the outside, and the influence on the living body.

  That is, by using the functional optical device 10 of this example, it is possible to freely control the amount of light in the predetermined wavelength region by controlling the light emission from the light source unit 15, and it is necessary to control the predetermined wavelength region. If it is desired to obtain light having the same characteristics as the incident light from the outside, the light measuring unit 16 measures the state of the incident light and controls the light emission intensity of the light source unit 15 so as to match the state of the incident light. Thereby, even if it is the structure provided with the optical filter part 11 which attenuates or interrupts | blocks the light of a specific wavelength range, the light of the same characteristic as the incident light from the outside can be utilized now as needed.

FIG. 4 is a flowchart for explaining another example of the operation of the functional optical device according to the present invention, and shows an operation example of the functional optical device having the configuration shown in FIG. Here, description will be made with reference to the configuration of FIG.
First, when the operation unit 13 acquires operation information for instructing increase / decrease of light in a specific wavelength range (step S11), the control unit 14 determines whether the operation information is instruction information for reproducing the characteristics of external incident light. Is determined (step S12). And if it is instruction information which reproduces the characteristic of external incident light, the photometry unit 16 will acquire the light quantity information of a specific wavelength area among external incident light (Step S13), and control part 14 will receive from photometry unit 16 The light amount information is converted into light amount control information of the light source unit 15 (step S14).

  Then, the light source unit 15 emits a predetermined amount of light based on the light amount control information (step S15). On the other hand, the optical filter unit 11 attenuates or blocks light in a specific wavelength region from outside incident light (step S18). And the light mixing part 12 mixes the light from the optical filter part 11 and the light from the light source part 15 substantially uniformly, and radiate | emits it from the functional optical apparatus 10 (step S16).

  On the other hand, if the operation information is not an instruction to reproduce the characteristics of the external incident light in step S12, the control unit 14 converts the operation information into light amount control information of the light source unit 15 (step S17), and the light source unit in step S15. 15 emits a predetermined amount of light in a specific wavelength region.

Next, a more specific configuration example of the functional optical device according to the present invention will be described.
The optical filter unit 11 of the functional optical device 10 includes a notch filter or a dichroic mirror that laminates a plurality of thin films having different refractive indexes and attenuates or blocks the amount of light transmitted through a specific wavelength region due to the light interference effect. A dichroic prism or the like can be applied, or a rugate / notch filter using an oxide film layer whose refractive index changes continuously can be used.

  As the light source unit 15, a minute point light source such as an LED (Light Emitting Diode) made of a semiconductor material can be used, or an organic EL, an inorganic EL, a thin film EL using an organic semiconductor material, an oxide, or the like. A surface light source such as can also be used. Furthermore, as the light source unit 15, a fluorescent lamp, an incandescent lamp, an HID lamp (high pressure discharge lamp) or the like including a light component in a specific wavelength range attenuated or blocked by the optical filter unit 11 can be used. In this case, a light source unit having the same function as the point light source and the surface light source can be configured by controlling the light irradiation direction of the light source unit 15 by combining a dichroic mirror, a prism, and the like.

FIG. 5 is a diagram for explaining an embodiment of the functional optical device according to the present invention, in which 101 is an LED light source, 102 is a light guide plate, and 103 is a notch filter.
In the present embodiment, the LED light source 101 is used as the light source unit 15. In this case, the LED light source 101 is selected to emit light in a specific wavelength range. In this case, the LED light source 101 basically uses a light source that emits only light in a specific wavelength range, but controls the specific wavelength range even when light other than the specific wavelength range is included. The object can be achieved, and can be appropriately applied according to the application and required characteristics of the functional optical device.

  In the present embodiment, light emitted from the LED light source 101 is incident from the edge side of the light guide plate 102, diffused on the surface opposite to the notch filter 103, and emitted in the arrow direction. A member having a diffusion function can be suitably applied to the light guide plate 102. For example, a milk-white resin substrate can be used alone, or a transparent substrate provided with a diffusion plate or a diffusion film can be used. The diffusion plate or the diffusion film is preferably provided on the side surface of the transparent substrate on the LED light source 101 side and the back surface on the notch filter 103 side. With such a configuration, a certain amount of light from the LED light source 101 incident on the light guide plate 102 can be emitted to the front side.

On the other hand, light from the outside enters the notch filter 103 from the back side of the notch filter 103. The notch filter 103 attenuates or blocks a specific wavelength range of incident light from the outside, and passes the transparent substrate or the light guide plate 102. The transparent substrate or light guide plate 102 mixes the light from the LED light source 101 and the incident light from the outside that has exited the notch filter 103 and emits the light in the direction of the arrow.
That is, in the present embodiment, the LED light source 101 corresponds to the light source unit 15 in FIG. 1, the notch filter 103 corresponds to the optical filter unit 11, and the light guide plate 102 corresponds to the light mixing unit 12.

  FIG. 6 is a view for explaining another embodiment of the functional optical device according to the present invention. In the example of FIG. 6, the LED light source 101 is used as the light source unit as in FIG. 5, but unlike the configuration of FIG. 5, the LED light source is disposed on the front side of the light guide plate 102 (on the side opposite to the notch filter 103). 101 is arranged, and light is emitted from the LED light source 101 in the direction of the arrow on the front side. The LED light source 101 basically emits light in a specific wavelength region as in the example of FIG. 5, but a light source that includes light outside the specific wavelength region can also be used depending on the application. As the light guide plate 102, a milky white resin substrate, a transparent substrate having a diffusion plate or a diffusion film disposed on the back side, or the like can be used.

  The notch filter 103 functions in the same manner as the example of FIG. 5 described above, attenuates or blocks a specific wavelength range of incident light from the outside, and allows the light guide plate 102 to pass. The light guide plate 102 mixes the light from the LED light source 101 and the incident light from the outside that has exited the notch filter 103 and emits it in the direction of the arrow.

  FIG. 7 is a view for explaining still another embodiment of the functional optical device according to the present invention, in which 104 is a transparent flat plate light emitting element. In the present embodiment, a transparent flat plate light emitting element 104 of a surface light source such as an organic EL, an inorganic EL, or a thin film EL utilizing an organic semiconductor material or an oxide is used as the light source unit. The transparent flat plate light-emitting element 104 basically emits light in a specific wavelength range, similar to the LED light source 1010 in the examples of FIGS. 5 and 6 described above. Can also be used.

  The notch filter 103 functions in the same manner as in the examples of FIGS. 5 and 6 described above, attenuates or blocks a specific wavelength region of incident light from the outside, and allows the transparent flat plate light emitting element 104 to pass. The transparent flat plate light emitting element 104 mixes the light emitted by the transparent flat plate light emitting element 104 itself and the incident light from the outside that has exited the notch filter 103 and emits the light in the direction of the arrow.

FIG. 8 is a diagram for explaining still another embodiment of the functional optical device according to the present invention, in which 105 is a light source and 106 is a dichroic mirror. In the present embodiment, a light source 105 that can emit light including a specific wavelength region such as a fluorescent lamp, an incandescent lamp, and an HID lamp is used.
The dichroic mirror 106 is formed so as to reflect light in a specific wavelength range and transmit light in other wavelength ranges. The light source light emitted from the light source 105 enters the dichroic mirror 106, and only light in a specific wavelength region is reflected forward (in the direction of the arrow), and light in other wavelength regions is transmitted rearward.

In addition, incident light from the outside is attenuated or blocked by a notch filter 103, is incident on the dichroic mirror 105 from the back side, and light excluding the specific wavelength region is transmitted and emitted forward.
That is, in this embodiment, the notch filter 103 corresponds to the optical filter unit 11 in FIG. 2, the dichroic mirror 106 corresponds to the light mixing unit 12, and the light source 105 and the dichroic mirror 106 emit light in a specific wavelength range. It corresponds to 15. With such a configuration, incident light from the outside that attenuates or blocks light in a specific wavelength region and light in a specific wavelength region emitted by the light source 105 can be mixed and emitted. By controlling the amount of light from the light source 105, the amount of light in a specific wavelength range emitted from the dichroic mirror 106 can be controlled.

  FIG. 9 is a view for explaining still another embodiment of the functional optical device according to the present invention, in which 107 is a dichroic prism and 108 is a transparent substrate. As the light source 105, a light source capable of emitting light including a specific wavelength region, such as a fluorescent lamp, an incandescent lamp, and an HID lamp, is used as in the above embodiments. The light source light emitted from the light source 105 enters a transparent substrate 108 having a dichroic prism 107 formed on the surface thereof. The dichroic prism 107 includes a surface 107a that reflects light in a specific wavelength range and transmits light in a wavelength other than the specific wavelength range. Therefore, among the light emitted from the light source 105, light in a specific wavelength region is reflected by the surface 107a of the dichroic prism 107 and emitted in front of the transparent substrate 108 (in the direction of the arrow). The light passes through the dichroic prism 107 and exits behind the transparent substrate 108.

On the other hand, the incident light from the outside is attenuated or blocked by the notch filter 103, is incident on the transparent substrate 108 from the back surface, and the light outside the specific wavelength region is transmitted through the dichroic prism 107 and emitted forward. .
That is, in this embodiment, the notch filter 103 corresponds to the optical filter unit 11 in FIG. 1, the transparent substrate 108 on which the dichroic prism 107 is formed corresponds to the light mixing unit 12, and the light source 105 and the dichroic prism 107 have a specific wavelength. This corresponds to the light source unit 15 that emits light in the region. With such a configuration, incident light from the outside that attenuates or blocks light in a specific wavelength region and light source light in a specific wavelength region can be mixed and emitted. By controlling the amount of light from the light source 105, the amount of light in a specific wavelength range emitted from the dichroic prism 107 can be controlled.

  FIG. 10 is a view for explaining still another embodiment of the functional optical device according to the present invention, in which 109 is a transparent substrate and 109a is a dichroic mirror incorporated in the transparent substrate. As the light source 105, a light source capable of emitting light including a specific wavelength region, such as a fluorescent lamp, an incandescent lamp, and an HID lamp, is used as in the above embodiments. The light source light emitted from the light source 105 is incident on a transparent substrate 109 in which dichroic mirrors 109a are continuously arranged and incorporated.

  The dichroic mirror 109a is formed to reflect light in a specific wavelength range and transmit light having a wavelength other than the specific wavelength range. Accordingly, among the light emitted from the light source 105, light in a specific wavelength region is reflected by the dichroic mirror 106 and emitted forward (in the direction of the arrow), and light outside the specific wavelength region is transmitted toward the rear of the transparent substrate 109. To do.

In addition, incident light from the outside is attenuated or blocked by the notch filter 103, is incident on the transparent substrate 109 from the back surface, and light having a wavelength other than the specific wavelength is transmitted and emitted forward.
That is, in this embodiment, the notch filter 103 corresponds to the optical filter unit 11 in FIG. 1, the transparent substrate 109 including the dichroic mirror 109a corresponds to the light mixing unit 12, and the light source 105 and the dichroic mirror 109a have a specific wavelength range. This corresponds to the light source unit 15 that emits the light. With such a configuration, incident light from the outside that attenuates or blocks light in a specific wavelength region and light source light in a specific wavelength region can be mixed and emitted. By controlling the amount of light by the light source 105, the amount of light in a specific wavelength range emitted from the transparent substrate 109 can be controlled.

Next, an example of controlling light in a specific wavelength range that is known to affect the living body will be described.
For example, if the functional optical device 10 is configured by combining the optical filter unit 11 that attenuates or blocks the blue component in the vicinity of a wavelength of 460 nm and the light source unit 15 that emits light of at least the wavelength component, it affects the user's arousal level. The influence can be adjusted.

  In the first place, a person has a biological rhythm (circadian rhythm) of about a one-day cycle, and thus repeats awakening during the day and sleep at night. It is known that this biological rhythm is actually slightly longer than 24 hours, but when exposed to light in the morning, the phase of the biological rhythm is advanced to reset it, so that the actual living environment Synchronize. That is, light is important for the adjustment of biological rhythm.

  It is a kind of hormone called melatonin that has a great relationship with the adjustment of biological rhythm by light. It is secreted from the pineal gland of the brain and is not secreted during the day, but from around sunset to before sunrise. It is thought that the secretion of melatonin promotes a decrease in body temperature and sleep.

  It is known that light affects the secretion of melatonin, and exposure to relatively strong light during the night when melatonin is secreted suppresses the secretion, and conversely causes relatively strong light during the day. Thus, nighttime melatonin secretion increases. Here, as shown in FIG. 15, it is known that light in the blue wavelength region near the wavelength of 460 nm has the most influence on suppression of human melatonin secretion.

  Therefore, by using the functional optical device 10 configured by the light source unit 15 that emits light having a large amount of energy in the wavelength region as described above and the optical filter unit 11 that attenuates or blocks light in the wavelength region, Since the amount of light in the above wavelength range can be controlled, it becomes possible to control a person's melatonin secretion and adjust the degree of arousal of the person.

  In general, it is desirable to keep the arousal level high during the day, and it is not necessary to increase the arousal level more than necessary at night. Therefore, as shown in FIG. 11, a time information acquisition unit 17 such as a clock or radio wave reception is added to the functional optical device 10 so that the time for performing light control can be set and stored. And the time information acquisition part 17 is comprised so that the instruction information which increases / decreases the light of a specific wavelength range to the operation part 13 according to the set time can be input.

  Thereby, even if the user does not input operation information instructing increase / decrease of light in a specific wavelength range to the operation unit 13 each time, for example, during the day, the emitted light amount in the wavelength range near 460 nm is kept high, Conversely, at night, the amount of light emitted in the wavelength region can be lowered or automatically controlled so as not to be emitted. By adding such functions, it is possible not only to adjust the user's life rhythm, but also to reduce jet lag, to control the life rhythm of shift workers, night workers, etc., as well as seasonal depression. Application to the treatment of diseases is also possible.

  Next, as another control example of light in a specific wavelength range that is known to affect the living body, for example, an optical filter unit 11 that originally attenuates or blocks light in a blue wavelength range of about 500 to 550 nm or less, and at least By combining the light source unit 15 that emits light in the wavelength range to constitute the functional optical device 10 of the present invention, it is possible to control the behavior of insects that gather in light at night, for example.

Currently, there is a fluorescent lamp as a widely used lighting fixture. However, the fluorescent lamp emits not only light having a wavelength of about 380 to 780 nm, which is a human visible region, but also ultraviolet light.
FIG. 12 is a diagram showing photosensitivity curves of various insects. “Quarterly magazine“ TESRA (construction electrical technology) ”, Vol. 148, 2005, “Construction Electrical Engineering Association of Japan”. Although humans cannot perceive ultraviolet light as brightness, insects are exposed from the blue wavelength component to the ultraviolet component as shown in FIG. In addition, some insects show phototaxis induced by sensing light in the wavelength range from blue to ultraviolet of night-time illumination light.

Accordingly, the functional optical device 10 having a configuration in which the light source unit 15 that emits light in a wavelength range of at least the wavelength range of 500 to 550 nm or less and the optical filter unit 11 that attenuates or blocks light in the wavelength range is combined with the insect. It is possible to keep the inductive effect low or keep it high.
Then, as shown in FIG. 13, by adding an automatic control mechanism by the time information acquisition unit 17, the insect guiding effect is suppressed or blocked from the evening when the insect is guided to the night. In the daytime, the functional optical device is controlled so as to utilize external illumination such as normal sunlight and reproduce the spectrum of the external illumination.

  As described with reference to FIG. 11, the time information acquisition unit 17 acquires time information using a clock, radio wave reception, or the like, and sets and stores a time for performing light control. The time information acquisition unit 17 can input operation information that instructs the operation unit 13 to increase or decrease the light in the specific wavelength range according to the set time.

And when performing control which reproduces the spectrum of external illuminations, such as sunlight, photometry unit 16 can be used. That is, the photometry unit 16 measures the amount of incident light from the outside, such as sunlight, and inputs the obtained light amount information to the control unit 14. The control unit 14 converts the light amount information into light amount control information of the light source unit 15. Then, the light amount of the light source unit 15 is adjusted to be substantially the same as the light amount in the specific wavelength region of the external light.
This effectively prevents the accumulation of pests that cause discomfort and harm to humans and harm plants, while not adversely affecting human behavior and plant activities during the day. Such light control becomes possible.

Next, as still another control example of light in a specific wavelength region that is known to affect the living body, for example, an optical filter unit 11 that attenuates or blocks light in an infrared wavelength region having a wavelength of 780 nm or more, and at least that wavelength region By configuring the functional optical device 10 in combination with the light source unit 15 that emits the light, the indoor temperature can be controlled.
Infrared rays having a wavelength of about 780 nm or more are also called heat rays and are used for cooking and heating. By creating a functional optical device 10 that controls light in this infrared wavelength region and installing it in, for example, a daylighting unit such as a window or an indoor lighting unit, indoor temperature control can be performed.

In this case, by performing automatic control using the time information acquired by the time information acquisition unit 17 as described above, for example, the incident amount of infrared rays into the indoors is kept low or blocked during the daytime, and infrared rays at nighttime. By keeping the amount of incident light high, it is possible to adjust the indoor temperature in a day cycle.
Furthermore, by adding a function for setting the date to the time information acquisition unit 17 described above, for example, in a one-year cycle, infrared incidence to the indoors is kept low or blocked in hot summer, and infrared in cold winter. This makes it possible to keep the indoor environment at a comfortable temperature.

Further, as shown in FIG. 14, a temperature measuring unit 18 can be added to the functional optical device 10 according to the present invention. The temperature measuring unit 18 functions as a temperature measuring unit that measures the ambient temperature on the side where the incident light from the outside is incident in the functional optical device 10 and the temperature of the atmosphere on the side where the mixed light is emitted.
In this case, for example, in accordance with the temperature information measured by the temperature measuring unit 18, the operation unit 13 instructs the control linked to the outside air, or instructs the control to keep the indoor at a substantially constant temperature. The indoor temperature can be controlled.
The functional optical device 10 having such a function can serve as an auxiliary temperature control for an air conditioner (air conditioner) that performs indoor temperature control, and is consumed in comparison with the case where temperature control is performed only by an air conditioner. The effect that electric power can be reduced is acquired.

  In addition, it is well known that ultraviolet rays having a wavelength of about 380 nm or less generally have an adverse effect on the human body. For example, ultraviolet rays called UV-B having a wavelength range of 290 to 320 nm are used by reptiles to release vitamin D in the body. It is the light necessary to synthesize. Therefore, the functional optical device 10 that performs light control with a wavelength of 290 to 320 nm can be used when reptiles are raised indoors as pets.

  Further, for example, laundry is increasingly dried indoors due to climate and housing conditions. In this case, the functional optical device that performs infrared control as described above and the functional optical device that performs ultraviolet control. It is effective to use in combination. By adopting such a configuration, it becomes possible to perform sterilization by ultraviolet rays to such an extent that the temperature of a room for drying clothes and the like is kept high and does not adversely affect the human body, so that the drying time can be shortened, and Bactericidal effect equivalent to or better than outdoor drying can be obtained.

It is a block diagram for demonstrating the structural example of the functional optical apparatus by this invention. It is a flowchart for demonstrating an example of operation | movement of the functional optical apparatus by this invention. It is a block diagram for demonstrating the other structural example of the functional optical apparatus by this invention. It is a flowchart for demonstrating the other example of operation | movement of the functional optical apparatus by this invention. It is a figure for demonstrating one Embodiment of the functional optical apparatus by this invention. It is a figure for demonstrating other embodiment of the functional optical apparatus by this invention. FIG. 6 is a view for explaining still another embodiment of the functional optical device according to the present invention. It is a figure for demonstrating other embodiment of the functional optical apparatus by this invention. It is a figure for demonstrating other embodiment of the functional optical apparatus by this invention. It is a figure for demonstrating other embodiment of the functional optical apparatus by this invention. It is a block diagram for demonstrating the further another structural example of the functional optical apparatus by this invention. It is a figure which shows the phototactic visibility curve of various insects. It is a block diagram for demonstrating the further another structural example of the functional optical apparatus by this invention. It is a block diagram for demonstrating the further another structural example of the functional optical apparatus by this invention. It is a figure which shows the relationship between the melatonin secretion suppression sensitivity described in patent document 1, and a wavelength.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Functional optical apparatus, 11 ... Optical filter part, 12 ... Light mixing part, 13 ... Operation part, 14 ... Control part, 15 ... Light source part, 16 ... Photometry unit, 17 ... Time information acquisition part, 18 ... Temperature measurement Unit 101 LED light source 102 light guide plate 103 notch filter 104 transparent plate light emitting element 105 light source 106 dichroic mirror 107 dichroic prism 107a surface 108 transparent substrate 109 transparent Substrate, 109a ... Dichroic mirror.

Claims (11)

An optical filter for attenuating or blocking light of a specific wavelength range predetermined by acting on incident light from the outside, a light source for emitting the light of the specific wavelength range, and a control unit for controlling the light emission intensity of the light source Have
The light emitted from the optical filter and the light emitted from the light source are mixed and emitted ,
A functional optical apparatus characterized in that the amount of light emitted from the specific wavelength region emitted from the functional optical apparatus can be controlled according to the control of the control unit.   The functional optical device according to claim 1, further comprising a light guide plate that diffuses light emitted from the light source, wherein the light emitted from the optical filter and light emitted from the light source are mixed by the light guide plate. A functional optical device.   The functional optical device according to claim 2, wherein an LED that emits light in the specific wavelength region is used as the light source, and light emitted from the LED is incident on the light guide plate from a side of the light guide plate, The light emitted from the optical filter is incident on the light guide plate from the back side of the light guide plate, and the light emitted from the LED and the light emitted from the optical filter passing through the light guide plate are mixed. Functional optical device.   3. The functional optical device according to claim 2, wherein an LED that emits light in the specific wavelength region is used as the light source, the LED is disposed on a surface of the light guide plate, and the light source plate is configured to have the rear surface from the back side. A functional optical device, wherein light emitted from an optical filter is incident on the light guide plate, and light emitted from the LED and light emitted from the optical filter passing through the light guide plate are mixed.   2. The functional optical device according to claim 1, wherein a transparent flat light-emitting element that is a transparent surface light source is used as the light source, and light emitted from the optical filter is transmitted to the transparent flat light-emitting element from the back side of the light guide plate. A functional optical device that mixes light emitted from the transparent flat plate light emitting element and light emitted from the optical filter passing through the light guide plate. The functional optical device according to claim 1, wherein the light source is a light source that emits light in a wavelength range including at least the specific wavelength range,
The optical filter includes a dichroic mirror that reflects light in the specific wavelength range and transmits light in a wavelength range other than the specific wavelength range,
The dichroic mirror reflects the light in the specific wavelength region out of the light emitted from the light source and transmits the light in the wavelength region excluding the specific wavelength region out of the incident light from the outside. And the transmitted light are mixed and emitted. The functional optical device according to claim 1, wherein the light source is a light source that emits light in a wavelength range including at least the specific wavelength range,
The optical filter includes a dichroic prism that reflects light in the specific wavelength range and transmits light in a wavelength range other than the specific wavelength range,
The dichroic prism reflects the light in the specific wavelength region out of the light emitted from the light source and transmits the light in the wavelength region excluding the specific wavelength region out of the incident light from the outside, and reflects the reflected light. And the transmitted light are mixed and emitted. The functional optical device according to any one of claims 1 to 7 , further comprising: a light amount detection unit that detects a light amount of the incident light from the outside that acts on the optical filter;
The functional optical device, wherein the control unit controls a light emission intensity of the light source according to a detection result of the light amount detection unit. The functional optical device according to any one of claims 1 to 7 , further comprising a time information acquisition unit that acquires current time information,
The functional optical device, wherein the control unit controls the light emission intensity of the light source based on the time information acquired by the time information acquisition unit. 8. The functional optical device according to claim 1 , wherein the ambient temperature on the side where the incident light from the outside is incident and the temperature of the atmosphere on the side where the mixed light is emitted are measured. Has a temperature sensor,
The control unit controls the light emission intensity of the light source based on temperature information measured by the temperature measuring unit. The functional optical device according to any one of claims 1 to 10 ,
The functional optical device, wherein the optical filter has a light transmittance in a wavelength range excluding the specific wavelength range greater than a light transmittance in the specific wavelength range.

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