JP2007052954A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of correcting deviations in color vision which a cataract patient has. <P>SOLUTION: By operation of a switch 1 or a switch 3, an A/D converter converts an obtained light intensity signal or a light emitting spectral signal into digital data corresponding to a voltage value of the respective signals, and outputs the converted data to an address designating part 5. A control part 8 outputs the data (address value) outputted to the address designating part 5 to a memory part 6 on the basis of the obtained light intensity signal or the light emitting spectral signal, and reads out a set value stored in an address designated by the converted data from the memory part 6. The control part 8 outputs the read-out set value to the DA converters 9a, 9b, 9c, 9d, and controls so that respective LEDs 11a, 11b, 11c, 11d emit light of prescribed intensity via amplifiers 10a, 10b, 10c, 10d. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating device that has an auxiliary light source for correcting the wavelength distribution in the visible light region, and in particular, corrects a shift in color vision of a cataract patient.

  Cataracts include cataracts caused by diabetes, retinal detachment, atopy, trauma, etc., in addition to senile cataracts that appear with increasing age. In the case of senile cataract, protein, which is a component of the lens, becomes clouded with age, metabolic waste products gather in the center of the lens, making it difficult for light to pass through and transmitting light on the short wavelength side in the visible light region. As a result of the decrease in the rate, the color appearance of the cataract patient appears yellowish as a whole, and there is a shift in color vision (or color tone) as compared with the healthy person.

  FIG. 5 is an explanatory diagram showing an example of spectral transmittance characteristics of the crystalline lens of a cataract patient based on a healthy person. Although the spectral transmittance characteristics of the lens differ depending on the individual cataract patient, as shown in FIG. 5, the light transmittance tends to gradually decrease from the long wavelength side to the short wavelength side of the visible light region. .

Therefore, in order to correct the color vision shift caused by the change in the optical characteristics of the crystalline lens due to an increase in age, and to bring it closer to the appearance of the same color as that of a young person or a healthy person, There has been proposed a three-wavelength-range fluorescent lamp made of a mixture of a green light-emitting phosphor and a red light-emitting phosphor and having chromaticity in a predetermined daylight color region on the xy chromaticity coordinates (see Patent Document 1).
JP-A-1-255152

  However, in the example of Patent Document 1, since a phosphor that increases the light intensity in the short wavelength region in the visible light region in advance is manufactured at the time of manufacturing the fluorescent lamp, the light distribution characteristic of the fluorescent lamp is manufactured. Sometimes decided. On the other hand, there are individual differences in the color vision shift of cataract patients, so in order to cope with the color vision shift of individual cataract patients, it is necessary to manufacture many types of fluorescent lamps. According to the symptoms, the color vision (or color tone) shift cannot be corrected by a simple method, so that it has not been put to practical use.

  The present invention has been made in view of such circumstances, and is provided with intensity adjusting means for adjusting the intensity of light of an auxiliary light source having an emission spectrum on the short wavelength side of the visible light region, so that it can be adapted to the symptoms of a cataract patient. It is another object of the present invention to provide an illumination device that can correct a color vision shift by adjusting the intensity of light emitted from the auxiliary light source.

  Another object of the present invention is that the combined light of a plurality of auxiliary light sources having emission spectra of different wavelengths in the visible light region has a spectral distribution in which the light intensity is large on the short wavelength side of the visible light region, An object of the present invention is to provide an illuminating device capable of correcting a shift in color vision with a simpler configuration in accordance with the symptoms of a cataract patient.

  Another object of the present invention is to provide intensity adjustment means for adjusting the intensity of light emitted from each auxiliary light source, thereby adjusting the intensity of the auxiliary light emitted from the auxiliary light source according to the symptoms of individual cataract patients. An object of the present invention is to provide an illuminating device capable of correcting the shift of the above with higher accuracy.

  Another object of the present invention is to provide a simple adjustment of auxiliary light by providing a synthetic light intensity adjusting means for adjusting the intensity of the synthetic light and an emission spectrum adjusting means for adjusting the emission spectrum of the synthetic light. It is in providing the illuminating device which can do.

  Another object of the present invention is to store a plurality of setting values for setting the light intensity of the auxiliary light source in advance, and adjust the light intensity of the auxiliary light source based on the stored setting value, so that individual cataracts can be obtained. An object of the present invention is to provide an illuminating device that can use set values set in advance according to the spectral transmittance characteristics of the crystalline lens of a patient and can adjust the optimum auxiliary light according to the symptoms of a cataract patient.

  Another object of the present invention is to provide an illuminating device that can be reduced in size, weight, and power saving because the auxiliary light source is an LED.

  Another object of the present invention is to provide an illuminating device that can correct light of a light source with a single illuminating device by including an auxiliary light source and a light source.

  The illumination device according to a first aspect of the present invention is the illumination device having an auxiliary light source for correcting the wavelength distribution in the visible light region, wherein the light of the auxiliary light source has an emission spectrum on the short wavelength side of the visible light region, Intensity adjusting means for adjusting the light intensity of the auxiliary light source is provided.

  The illumination device according to the second aspect of the present invention is the illumination device having a plurality of auxiliary light sources for correcting the wavelength distribution in the visible light region, each light of the auxiliary light source has an emission spectrum of a different wavelength in the visible light region, The combined light of the auxiliary light source has a spectral distribution in which the light intensity is high on the short wavelength side in the visible light region.

  A lighting device according to a third aspect of the invention is characterized in that, in the second aspect of the invention, the lighting device further comprises intensity adjusting means for adjusting the intensity of light of the auxiliary light source.

  A lighting device according to a fourth aspect of the present invention includes, in the second aspect of the present invention, a combined light intensity adjusting unit that adjusts the intensity of the combined light, and an emission spectrum adjusting unit that adjusts an emission spectrum of the combined light. The light intensity of the auxiliary light source is adjusted based on the adjustment by the adjusting means or the emission spectrum adjusting means.

  A lighting device according to a fifth aspect of the present invention is the lighting device according to the fourth aspect, further comprising storage means for storing a plurality of setting values for setting the light intensity of the auxiliary light source, and determining the light intensity of the auxiliary light source based on the setting value. It is characterized by being adjusted.

  The lighting device according to a sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the auxiliary light source is an LED.

  A lighting device according to a seventh invention is characterized in that in any one of the first invention to the sixth invention, a light source whose wavelength distribution in a visible light region is corrected by the auxiliary light source is provided.

  In the first invention, the light of the auxiliary light source has an emission spectrum on the short wavelength side (for example, blue, blue green, etc.) of the visible light region. By adjusting the light intensity of the auxiliary light source by the intensity adjusting means, the blue or blue-green light is enhanced and the light intensity is adjusted. As a result, in the spectral transmittance characteristics of the lens of a cataract patient, the decrease in the transmittance of light on the short wavelength side in the visible light region is compensated, the light on the short wavelength side in the visible light region is corrected for enhancement, and the corrected light is viewed. Irradiate the subject to bring the color vision of a cataract patient closer to that of a healthy person.

  In the second invention, there are a plurality of auxiliary light sources having emission spectra of different wavelengths in the visible light region, and the combined light of each auxiliary light source has a high light intensity on the short wavelength side of the visible light region. It has a spectral distribution and enhances light on the short wavelength side (eg, blue, blue-green, green, etc.) in the visible light region. As a result, in the spectral transmittance characteristics of the crystalline lens of a cataract patient, the decrease in the transmittance of light on the short wavelength side in the visible light region is compensated, and the light on the short wavelength side in the visible light region is made to correspond to the spectral transmittance characteristics. Intensity correction is performed, and the corrected light is irradiated to the visual target so that the color vision of a cataract patient is close to that of a healthy person.

  In the third aspect of the invention, by adjusting the light intensity of each auxiliary light source by the intensity adjusting means, light emission of a required wavelength on the short wavelength side (eg, blue, blue green, green, etc.) in the visible light region. Increase or decrease the light intensity of the spectrum individually. Thus, in accordance with the symptoms of individual cataract patients, the decrease in light transmittance on the short wavelength side in the visible light region of the crystalline lens of the cataract patient is compensated, and the light on the short wavelength side in the visible light region is converted to the spectral transmittance. Correction is made so as to correspond to the characteristics, and the corrected light is irradiated to the visual target so that the color vision of the cataract patient is close to the color vision of the healthy person.

  In the fourth invention, the synthesized light intensity adjusting means adjusts the intensity of the synthesized light synthesized by the light of each auxiliary light source. The emission spectrum adjusting means changes the emission spectrum characteristic of the synthesized light by individually increasing or decreasing the intensity of the light of the auxiliary light source having the emission spectra of different wavelengths. Thus, in accordance with the symptoms of individual cataract patients, the decrease in light transmittance on the short wavelength side in the visible light region of the crystalline lens of the cataract patient is compensated, and the light on the short wavelength side in the visible light region is converted to the spectral transmittance. The color vision of the cataract patient is more easily brought close to the color vision of a healthy person as compared with the case where the correction is performed so as to correspond to the characteristics, and the corrected light is irradiated to the visual target and the intensity of the auxiliary light source is individually adjusted.

  In the fifth invention, a plurality of setting values for setting the light intensity of the auxiliary light source are stored in advance corresponding to the spectral transmittance characteristics of the crystalline lens due to the symptoms of cataract. The light intensity of the auxiliary light source is adjusted based on a required setting value among the stored setting values. As a result, the light on the short wavelength side of the visible light region is optimally corrected according to the symptoms of each individual cataract patient, and the corrected light is irradiated to the visual target so that the color vision of the cataract patient is close to that of a healthy person. .

  In the sixth invention, the auxiliary light source is an LED.

  In the seventh invention, the auxiliary light source includes a light source whose wavelength distribution in the visible light region is corrected. The wavelength distribution in the visible light region of the light emitted from the light source is corrected by the auxiliary light source.

  In the first invention, by providing an intensity adjusting means for adjusting the intensity of the light of the auxiliary light source having the emission spectrum on the short wavelength side of the visible light region, the transmittance of the light on the short wavelength side of the visible light region is reduced. A shift in color vision can be corrected by adjusting the intensity of the auxiliary light according to the symptoms of a cataract patient who is lower than that of a healthy person.

  In the second invention, the combined light of a plurality of auxiliary light sources having emission spectra of different wavelengths in the visible light region has a spectral distribution in which the light intensity is large on the short wavelength side of the visible light region, Corresponding to the spectral transmittance characteristics of the crystalline lens of a cataract patient, it is possible to more easily correct the color vision shift.

  In the third invention, by providing an intensity adjusting means for adjusting the intensity of the light emitted from each of the auxiliary light sources having emission spectra of different wavelengths in the visible light region, the auxiliary light is adjusted according to the symptoms of the individual cataract patient. By adjusting the intensity, the color vision shift can be corrected with higher accuracy.

  In the fourth invention, the intensity of the auxiliary light source is individually adjusted by including the combined light intensity adjusting means for adjusting the intensity of the combined light and the emission spectrum adjusting means for adjusting the emission spectrum of the combined light. Compared to the above, it is possible to adjust the auxiliary light more easily.

  In the fifth invention, a plurality of setting values for setting the light intensity of the auxiliary light source are stored in advance, and the light intensity of the auxiliary light source is adjusted on the basis of the stored setting value. A preset value set in advance according to the spectral transmittance characteristic can be used, and the optimum auxiliary light can be adjusted according to the symptoms of the cataract patient.

  In the sixth invention, since the auxiliary light source is an LED, it is possible to reduce the size, the weight, and the power consumption as compared with the case where an incandescent lamp or a fluorescent lamp is used as the auxiliary light source.

  In the seventh invention, the light of the light source can be corrected by one illumination device by providing the light source whose wavelength distribution in the visible light region is corrected by the auxiliary light source.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is a block diagram showing a configuration of a lighting device according to the present invention. In the figure, reference numeral 1 denotes a light intensity adjusting switch for adjusting the intensity of combined light of light emitted from an LED to be described later. The switch 1 has an adjustment volume, and outputs a voltage whose output value varies according to the rotation of the volume to the A / D converter 2 and the control unit 8 as a light intensity signal. The A / D converter 2 acquires the light intensity signal output from the switch 1, converts the acquired light intensity signal into digital data (for example, 8 bits), and converts the converted digital data to, for example, 16 bits. Are output to the upper 8 bits of the address specifying unit 5 constituted by the registers. Thus, the digital data whose value changes (for example, 0 to 255) is output to the address specifying unit 5 as the adjustment volume of the switch 1 is rotated from the minimum value to the maximum value.

  The switch 3 has an adjustment volume for adjusting the characteristics of the emission spectrum of the combined light of the light emitted from the LED, and a voltage whose output value varies according to the rotation of the volume is used as an emission spectrum signal. The data is output to the converter 4 and the control unit 8. The A / D converter 4 acquires the emission spectrum output from the switch 3, converts the acquired emission spectrum signal into digital data (for example, 8 bits), and converts the converted digital data into the address designation unit 5. Output to lower 8 bits. As a result, digital data whose value changes as the adjustment volume of the switch 3 is rotated from the minimum value to the maximum value is output to the address designation unit 5.

  The address designating unit 5 designates the address of the storage unit 6 based on the input digital data.

  The control unit 8 controls the timing of outputting the address value specified by the address specifying unit 5 to the storage unit 6 based on the light intensity signal or the emission spectrum signal input from the switches 1 and 3. Is output to the storage unit 6, the storage unit 6 outputs the stored data (setting value) to the setting value output unit 7 constituted by, for example, a 32-bit register.

  The control unit 8 acquires an on / off signal according to the operation of the switch 12 for the off / off operation. When the control unit 8 acquires the on signal, the control unit 8 assigns a predetermined address value to the address designating unit 5. The data (initial value) corresponding to the address value is read from the storage unit 6 to the set value output unit 7, the read data is output to a D / A converter described later, and the LED is lit. When the off signal is acquired, the control unit 8 turns off the LED.

  The memory | storage part 6 has memorize | stored the setting value which sets the light intensity of LED as 8-bit data for every LED, for example. As will be described later, when an LED having four different emission spectra is provided, the storage unit 6 stores a set value composed of 32 bits (4 × 8 bits). The setting value stored in the storage unit 6 is determined in advance so that the intensity of the LED light changes according to the address specified by the upper 8 bits and the lower 8 bits of the address specifying unit 5. For example, as the value specified by the upper 8 bits increases, the setting value for each LED increases in the same way, and each LED corresponds to the value specified by the lower 8 bits. The set values for the above are changed separately. The setting value stored in the storage unit 6 is set in advance so as to correct the transmittance decrease on the short wavelength side in accordance with the spectral transmittance characteristics of the lens due to the symptoms of individual cataracts. Thus, a desired set value can be used by adjusting the switches 1 and 3.

  The set value output unit 7 temporarily holds the data (set value) read from the storage unit 6, and the D / A converters 9a, 9b, and 9c store the held data at a predetermined timing under the control of the control unit 8. , 9d.

  The D / A converters 9a, 9b, 9c, and 9d convert the data input from the set value output unit 7 into a required voltage according to the magnitude of the digital value, and the converted voltages are amplifiers 10a, 10b. 10c and 10d.

  The amplifiers 10a, 10b, 10c, and 10d amplify the voltages input from the D / A converters 9a, 9b, 9c, and 9d with a predetermined amplification factor, and supply currents corresponding to the voltages obtained by the amplification to the LEDs 11a, 11b, 11c, 11d. Each light emitted from the LEDs 11a, 11b, 11c, and 11d has an emission spectrum centered on blue, blue-green, green, and yellow. By changing the currents flowing in the LEDs 11a, 11b, 11c, and 11d, the intensity of light emitted from the LEDs 11a, 11b, 11c, and 11d can be adjusted, and the distribution characteristics of the emission spectrum can be adjusted. Each of the LEDs 11a, 11b, 11c, and 11d may be a single LED, or may be a group of LEDs configured by connecting a plurality of LEDs in series or in parallel.

  Thereby, the adjustment of the intensity of the combined light synthesized by the light of each LED 11a, 11b, 11c, 11d is performed by the light intensity adjustment switch 1, the A / D converter 2, the addressing unit 5, the storage unit 6, and the like. The set value that is configured and stored in advance in the storage unit 6 is output to the set value output unit 7 so that the D / A converters 9a, 9b, 9c, and 9d, and the amplifiers 10a, 10b, 10c, and 10d set the set values. By turning on the LEDs 11a, 11b, 11c, and 11d with corresponding intensities, the light intensity of the LEDs 11a, 11b, 11c, and 11d can be similarly changed.

  Further, the emission spectrum of the combined light synthesized by the light of each LED 11a, 11b, 11c, 11d is adjusted by the emission spectrum adjustment switch 3, the A / D converter 4, the addressing unit 5, the storage unit 6, and the like. The set value that is configured and stored in advance in the storage unit 6 is output to the set value output unit 7 so that the D / A converters 9a, 9b, 9c, and 9d, and the amplifiers 10a, 10b, 10c, and 10d set the set values. By turning on the LEDs 11a, 11b, 11c, and 11d with the corresponding intensity, it is possible to realize by individually changing the light intensity of each of the LEDs 11a, 11b, 11c, and 11d.

  FIG. 2 is an external perspective view of the lighting device according to the present invention. In the figure, reference numeral 16 denotes a box-shaped main body that is substantially elliptical in plan view. The main body 16 can be placed on a desk, table, etc., and controls light intensity adjustment switch 1, emission spectrum adjustment switch 3, on / off operation switch 12, and LED light intensity adjustment. The control part 8 to perform is provided. The body portion 16 is provided with an appropriate-length bendable support column 15. The end of the support column 15 has a fluorescent lamp 13 (light source) on the surface of a rectangular reflecting plate 14 a and an auxiliary light source. A light emitting unit 14 in which LEDs 11a, 11b, 11c, 11d,.

  The fluorescent lamp 13 has a straight tube shape and is arranged in parallel to the reflecting plate 14a. On one side of the fluorescent lamp 13, LEDs 11a, 11b, 11c, 11d,... Are juxtaposed in the longitudinal direction of the fluorescent lamp 13 with an appropriate separation distance.

  Next, the operation of the lighting device according to the present invention will be described. When an ON signal is acquired by operating the switch 12 for ON / OFF operation, the fluorescent lamp 13 is turned on, and the control unit 8 stores an initial value of the intensity of light emitted from the LEDs 11a, 11b, 11c, and 11d. 6, the LEDs 11 a, 11 b, 11 c, and 11 d are lit with the light intensity corresponding to the initial value.

  FIG. 3 is an explanatory diagram showing an example of the spectral distribution of the LEDs 11a, 11b, 11c, and 11d. As shown in the figure, the light intensity of the blue LED 11a on the shortest wavelength side is the largest, and the light intensity of the blue-green LED 11b and the green LED 11c is gradually reduced, and is on the longest wavelength side. The light intensity of the yellow LED 11d is the smallest. By setting initial values so as to obtain the spectral distribution shown in the figure, the spectral distribution of the auxiliary light source composed of the LEDs 11a, 11b, 11c, and 11d is changed from the long wavelength side to the short wavelength side in the visible light region. As the light intensity increases gradually, the light transmittance on the short wavelength side in the visible light region, which is peculiar to cataract patients, decreases when the auxiliary light source is irradiated onto the visual object simultaneously with the fluorescent lamp 13. It compensates and enhances the light on the short wavelength side in the visible light region.

  When the light intensity signal or emission spectrum signal is acquired by operating the switch 1 for adjusting light intensity or the switch 3 for adjusting emission spectrum, the A / D converter converts the acquired light intensity signal or emission spectrum signal to each The data is converted into digital data corresponding to the voltage value of the signal, and the converted data is output to the address specifying unit 5. Based on the acquired light intensity signal or emission spectrum signal, the control unit 8 outputs the data (address value) output to the address specifying unit 5 to the storage unit 6 and stores the data at the address specified by the converted data. The set value is read from the storage unit 6.

  The control unit 8 outputs the read set values to the D / A converters 9a, 9b, 9c, and 9d, and the LEDs 11a, 11b, 11c, and 11d have the required intensity via the amplifiers 10a, 10b, 10c, and 10d. Control to emit light. Accordingly, the light intensity of each of the LEDs 11a, 11b, 11c, and 11d can be adjusted so as to correct the color vision shift in accordance with the symptoms of the individual cataract patient.

  FIG. 4 is an explanatory diagram showing an example of adjusting the light intensity and emission spectrum of the LEDs 11a, 11b, 11c, and 11d. As shown in FIG. 4A, by adjusting (for example, decreasing) the light intensity, the light intensity of each of the LEDs 11a, 11b, 11c, and 11d is decreased, and the LEDs 11a, 11b, 11c, and 11d are configured. The peak of the emission spectrum of the auxiliary light source can be reduced.

  Further, as shown in FIG. 4B, by adjusting the emission spectrum, the light intensity of the blue LED 11a is lowered, and the light intensity of the blue-green LED 11b is raised, whereby the LEDs 11a, 11b, 11c, 11d. The characteristic of the emission spectrum of the auxiliary light source constituted by can be changed.

  The illumination device of the present invention is used as general illumination for a cataract patient by using the fluorescent lamp 13 after selecting a set value once by operating the switch 1 for adjusting light intensity or the switch 3 for adjusting emission spectrum. It can be used, and only the auxiliary light source can be turned off if necessary. In addition, by replacing the initial value stored in the storage unit 6 with the setting value set by the operation of the switch 1 for adjusting the light intensity or the switch 3 for adjusting the emission spectrum, the setting value once set is continued. It can also be used.

  As described above, in the present invention, the LEDs 11a, 11b, 11c, and 11d are corrected in advance so as to correct the transmittance decrease on the short wavelength side in accordance with the spectral transmittance characteristics of the lens due to the symptoms of individual cataracts. The setting values for setting the respective light intensities are stored, and the light intensity or emission spectrum is adjusted according to the symptoms of the cataract patient, so that the LEDs 11a, 11b, 11c, 11d can be turned on, and the color vision (by adjusting the intensity of the auxiliary light according to the individual symptoms of the cataract patient whose light transmittance on the short wavelength side in the visible light region is lower than that of the healthy person (Or color tone) can be corrected.

  In order to obtain a desired spectral distribution, a method of blocking light in an unnecessary wavelength band with a filter may be considered, but it cannot be considered efficient from the viewpoint of energy efficiency. The illumination device of the present invention that is not required can effectively utilize the energy of the auxiliary light source.

  In the above-described embodiment, the configuration is such that the LEDs are juxtaposed on one side of the straight tube fluorescent lamp. However, the arrangement of the LEDs is not limited to this. For example, the LEDs are arranged on both sides of the fluorescent lamp. A configuration in which LEDs are arranged side by side, a configuration in which LEDs are arranged apart from each other around a fluorescent lamp, a configuration in which LEDs are arranged between a plurality of fluorescent lamps, and an LED outside or inside a circular fluorescent lamp instead of a straight tube type Needless to say, the arrangement may be any arrangement such as an arrangement in which an LED is arranged around an incandescent lamp instead of a fluorescent lamp. Moreover, the structure provided only with the auxiliary | assistant light source comprised with LED, without including the fluorescent lamp, incandescent lamp, etc. as a light source.

  In the above-described embodiment, the plurality of LEDs are arranged. However, one LED may be arranged. In this case, the LED only needs to have an emission spectrum having a peak in the vicinity of, for example, blue or blue-green, and the light intensity of the LED is set by a switch for adjusting the light intensity of the LED. It is possible to adjust by providing and acquiring the light intensity signal in the same way.

  In the above-described embodiment, the light intensity signal and the emission spectrum signal are obtained and the light intensity of each LED is adjusted. However, the cataract is acquired in advance without obtaining the light intensity signal and the emission spectrum signal. Each LED has a spectral distribution in which the light intensity is high on the short wavelength side of the visible light region in order to correct the transmittance decrease on the short wavelength side in response to the spectral transmittance characteristics of the lens due to the typical symptoms of Alternatively, a setting value for setting the light intensity may be determined, and each LED may be turned on based on the setting value. Thereby, the structure of an illuminating device can be simplified.

  In the above embodiment, the light intensity signal and the emission spectrum signal are obtained and the light intensity of each LED is adjusted. However, instead of the light intensity signal and the emission spectrum signal, each LED is supported. The configuration may be such that the obtained light intensity signal is acquired. In this case, the light intensity of each LED can be individually controlled.

  In the above-described embodiment, the setting value for setting the light intensity of each LED is stored. However, the present invention is not limited to this, and an arithmetic circuit for calculating the light intensity of each LED is provided. The light intensity signal and the emission spectrum signal may be acquired, and the light intensity of each LED may be calculated based on the acquired signal.

  In the above-described embodiment, blue, blue-green, green, and yellow LEDs are arranged. However, the color (wavelength) is not limited to this, and LEDs of other colors (wavelengths) are used. It goes without saying that it can be done.

  In the above-described embodiment, the switches 1 and 3 have adjustment volumes, but are not limited to this. For example, any configuration such as a touch panel for adjustment and a slide type may be used.

  In the above-described embodiment, the lighting device is for a tabletop provided with a main body portion, a column portion, and a light emitting portion. However, the form of the lighting device is not limited to this, and an indoor ceiling is provided. For example, the light emitting unit may be attached to the ceiling of the room or embedded in the ceiling, and the adjustment switch may be attached to the wall or the like.

  In the above-described embodiment, the A / D converter, the address specifying unit, the storage unit, the set value output unit, the D / A converter, and the like are provided. However, the present invention is not limited to this, and other configurations may be used.

It is a block diagram which shows the structure of the illuminating device which concerns on this invention. It is an external appearance perspective view of the illuminating device which concerns on this invention. It is explanatory drawing which shows the example of the spectral distribution of LED. It is explanatory drawing which shows the adjustment example of the light intensity and emission spectrum of LED. It is explanatory drawing which shows the example of the spectral transmittance characteristic of the crystalline lens of a cataract patient on the basis of a healthy person.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 3, 12 Switch 2, 4 A / D converter 5 Address designation part 6 Storage part 7 Setting value output part 8 Control part 9a, 9b, 9c, 9d D / A converter 10a, 10b, 10c, 10d Amplifier 11a , 11b, 11c, 11d LED
13 Fluorescent light

Claims (7)

In an illumination device having an auxiliary light source for correcting the wavelength distribution in the visible light region,
The light of the auxiliary light source is
Has an emission spectrum on the short wavelength side of the visible light region,
An illumination device comprising intensity adjusting means for adjusting the light intensity of the auxiliary light source. In an illumination device having a plurality of auxiliary light sources for correcting the wavelength distribution in the visible light region,
Each light of the auxiliary light source is
Having emission spectra of different wavelengths in the visible light region,
The combined light of the auxiliary light source is
An illumination device having a spectral distribution in which light intensity is high on a short wavelength side in a visible light region.   The illumination apparatus according to claim 2, further comprising an intensity adjusting unit that adjusts the intensity of light of the auxiliary light source. A combined light intensity adjusting means for adjusting the intensity of the combined light;
An emission spectrum adjusting means for adjusting the emission spectrum of the synthesized light,
3. The illumination device according to claim 2, wherein the intensity of light of the auxiliary light source is adjusted based on adjustment by the combined light intensity adjusting means or emission spectrum adjusting means. Storage means for storing a plurality of setting values for setting the light intensity of the auxiliary light source;
The lighting device according to claim 4, wherein the intensity of light of the auxiliary light source is adjusted based on the set value.   The illumination device according to claim 1, wherein the auxiliary light source is an LED.   The illumination device according to claim 1, further comprising a light source that corrects a wavelength distribution in a visible light region by the auxiliary light source.

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