WO2010038573A1 - 線状光源および電子機器 - Google Patents
線状光源および電子機器 Download PDFInfo
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- WO2010038573A1 WO2010038573A1 PCT/JP2009/065254 JP2009065254W WO2010038573A1 WO 2010038573 A1 WO2010038573 A1 WO 2010038573A1 JP 2009065254 W JP2009065254 W JP 2009065254W WO 2010038573 A1 WO2010038573 A1 WO 2010038573A1
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- light
- linear
- light source
- linear material
- receiving element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0003—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being doped with fluorescent agents
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
Definitions
- the present invention relates to a linear light source that emits light by propagating light through an optical fiber or the like, and an electronic device including the linear light source.
- a linear light source is a combination of a light emitting element such as a light emitting diode (LED) or a semiconductor laser and a linear material such as an optical fiber capable of propagating light.
- the linear light source emits the linear material by causing the light emitted from the light-emitting element to enter from the end of the linear material and propagate inside the linear light source (see, for example, Patent Documents 1 to 3).
- a linear light source that obtains an illumination effect by propagating light emitted from a semiconductor laser to a linear material
- the semiconductor laser light incident on one end of the linear material is emitted as it is from the other end.
- the energy density of the semiconductor laser light is high, there is a risk of adversely affecting the human body, particularly the eyes.
- a linear light source using a semiconductor laser is required to have a configuration for avoiding the above danger.
- Patent Document 4 discloses a lighting device in which a light emitting element is arranged in an optical fiber and the light emitting element and the optical fiber are integrated with each other as having the above configuration. In this lighting device, leakage of light is avoided and high coupling efficiency between the light emitting element and the optical fiber is obtained.
- Patent Documents 1 to 4 have a problem that semiconductor laser light is emitted to the outside when the linear material is broken (cut). In other words, the configurations described in Patent Documents 1 to 4 cannot detect abnormal situations such as breakage of the linear material, failure of the light emitting element, and removal of the light emitting element.
- the present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a linear light source capable of detecting an abnormal situation such as a breakage of a linear material, and an electronic apparatus including the linear light source. There is to do.
- the linear light source of the present invention includes a linear material capable of propagating incident light therein, and emits light by propagating light into the linear material.
- the first light emitting element that is disposed at one end of the linear material and emits light so as to be incident on one end of the linear material, and is disposed at the other end of the linear material, And a light receiving element that detects light propagating through the linear material.
- the linear light source of the present invention includes a linear material capable of propagating incident light therein, and emits light by propagating light inside the linear material.
- the linear light source includes a light-emitting element with a built-in light receiving element that is disposed at both ends of the linear material and has a structure in which the light-receiving element is built in the light-emitting element. Light is emitted so as to be incident on the end of the linear material, and light propagating through the linear material is detected by the light receiving element.
- the electronic apparatus of the present invention is characterized by including the linear light source.
- the linear light source of the present invention is disposed at one end of a linear material, and emits light so as to enter one end of the linear material, and the linear light source described above. It is a structure provided with the light receiving element which is arrange
- the light propagating through the linear material is detected by the light receiving element. Therefore, if abnormal conditions such as breakage of the linear material, unexpected bending, and failure or misalignment of the light emitting element occur, As compared with, the amount of light propagation detected by the light receiving element changes greatly. Therefore, there is an effect of providing a linear light source capable of detecting an abnormal situation based on the light propagation amount.
- the linear light source of the present invention includes light emitting elements with a built-in light receiving element that are disposed at both ends of the linear material and have a structure in which the light receiving element is built in the light emitting element. The light is emitted by the light emitting element so as to enter the end of the linear material, and the light having propagated through the linear material is detected by the light receiving element.
- the electronic apparatus of the present invention has a configuration including the linear light source.
- these devices / devices have an effect that it is possible to eliminate dangers such as entering the human eye by providing a safety system that detects abnormal situations and prevents light from leaking.
- the said linear light source it is a side view which shows the mode of light diffusion when the linear material which made the outermost layer contain the light-diffusion substance is provided.
- the said linear light source it is a side view which shows the mode of light emission when the linear material with which the fluorescent substance was apply
- FIG. 1 is a perspective view showing configurations of the linear light source 10 and the linear light source 10a.
- FIG. 2 is a side view of a portion where the light emitting element 12 is arranged in the linear light source 10 and the linear light source 10a shown in FIG.
- the linear light source 10 includes a linear material 11 and two light emitting elements 12.
- the linear material 11 is a linear material capable of propagating incident light therein, and is, for example, an optical fiber.
- the linear material 11 is made of a material that cannot be bent.
- the light emitting element 12 is an optical device that emits visible light.
- the light emitting elements 12 are arranged at both ends of the linear material 11 with a predetermined interval from the end face. Further, as shown in FIG. 2, the light emitting element 12 is arranged so that the emitted light is incident on the end face of the linear material 11.
- the linear light source 10 includes the light emitting elements 12 at both ends of the linear material 11, makes light from the light emitting elements 12 enter from both ends of the linear material 11, and propagates the light to the linear material 11.
- the linear material 11 can emit light.
- the light emitting elements 12 respectively provided at both ends of the linear material 11 are arranged so as to have a predetermined distance from the end face of the linear material 11, whereby the light emitting elements 12. Self-heating is prevented from being conducted to the linear material 11. Therefore, it is possible to suppress degradation of optical characteristics due to heat.
- the linear light source 10 cannot be bent because it includes the linear material 11. Therefore, instead of the linear material 11, a linear material 11a using a foldable material may be provided.
- the linear light source 10 a has a configuration including a linear material 11 a and two light emitting elements 12.
- the linear light source 10a has the same effect as the linear light source 10, and can be bent according to the application.
- the light emitting element 12 may be any optical device that can emit light, and for example, a light emitting diode (LED) or a semiconductor laser can be used.
- FIG. 3 shows a configuration of a linear light source including an LED element 12 a as the light emitting element 12.
- FIG. 4 shows a configuration of a linear light source including a semiconductor laser element 12 b as the light emitting element 12. In particular, since semiconductor laser light easily propagates through the linear material 11, a semiconductor laser element is suitable as the light emitting element 12.
- the light emitting elements 12 are disposed at both ends of the linear materials 11 and 11a, respectively, but the present invention is not limited to this, and the light emitting element 12 may be one of the linear materials 11 and 11a.
- positioned only at an end may be sufficient.
- FIG. 5 is a perspective view showing the configuration of the linear light source 15 and the linear light source 15a.
- the linear light source 15 includes a linear material 11 and a light emitting element 12 disposed at one end of the linear material 11.
- the linear light source 15a has a configuration including a linear material 11a and a light emitting element 12 disposed at one end of the linear material 11a.
- the light intensity is inferior to that of the linear light sources 10 and 10a, but the power consumption is excellent. Has an effect.
- FIG. 6 is a side view showing a configuration example of the linear light source 20.
- the linear light source 20 includes a light receiving element 21 in addition to the configuration of the linear light source 15.
- the linear light source 20 may be configured to include the light receiving element 21 in the linear light source 15a including the linear material 11a.
- the light receiving element 21 may be an optical device that can detect light, and for example, a photodiode may be used.
- the light receiving element 21 is disposed at the end of the linear material 11 opposite to the end on which the light emitting element 12 is disposed.
- the light receiving element 21 is disposed so as to receive light that has propagated through the linear material 11.
- the linear light source 20 includes the light emitting element 12 at one end of the linear material 11 and the light receiving element 21 at the other end. Therefore, it is possible to cause the linear material 11 to emit light and to detect the light propagation amount propagating through the linear material 11 by the light receiving element 21. That is, the linear light source 20 can detect the amount of light incident from one end of the linear material 11 at the opposite end.
- the linear light source 20 is based on the configuration of the linear light sources 15 and 15a in which light from the light emitting element 12 is incident only from one side of the linear material 11, but is not limited to this, and from both sides of the linear material 11
- the linear light sources 10 and 10a on which the light emitted from the light emitting element 12 is respectively incident can be basically configured.
- FIG. 7 is a side view showing a configuration example of the linear light source 25.
- FIG. 8 is a front view showing a configuration example of the light receiving element 26 with a built-in light receiving portion.
- the linear light source 25 includes a light receiving element built-in light emitting element 26 in addition to the configuration of the linear light source 15 or the configuration of the linear light source 15 a. That is, the linear light source 25 has a configuration including a light receiving element built-in light emitting element 26 in addition to the configuration of the linear light source 10 or the configuration of the linear light source 10a except the one light emitting element 12. Yes.
- the light receiving element 26 with a built-in light receiving part includes a light receiving part 27 and a light emitting part 28.
- the light-receiving element built-in light-emitting element 26 is disposed at the end of the linear material 11 opposite to the end on the side where the light-emitting element 12 is disposed.
- the light-receiving surface of the light-receiving unit 27 and the light-emitting surface of the light-emitting unit 28 are provided on the same surface, and the light-emitting unit with a built-in light-receiving unit 26 is disposed so that this surface faces the linear material 11. .
- the linear light source 25 includes the light emitting element 12 at one end of the linear material 11 and the light receiving element 26 with a built-in light receiving portion at the other end. Therefore, by making light incident from both ends of the linear material 11 and propagating the light to the linear material 11, the linear material 11 can emit light more brightly. In addition, the amount of light propagating through the linear material 11 can be detected by the light receiving portion 27 of the light receiving element 26 with a built-in light receiving portion.
- the amount of light incident on the light receiving element 27 of the light receiving element 21 and the light receiving element 26 with a built-in light receiving part varies depending on the state of the light emitting element 12 and the state of the linear material 11.
- the light from the light emitting element 12 is emitted to the outside, so that the light propagates normally. Compared to when the light is transmitted, the amount of light propagation is greatly reduced.
- the light receiving element 21 and the light receiving unit 27 are compared with the normal state.
- the amount of light propagation to be detected changes greatly. Therefore, by confirming the amount of light propagation detected by the light receiving element 21 and the light receiving unit 27, it is possible to constantly monitor and detect the occurrence of an abnormal situation.
- the light emitting element 12 may be electrically disconnected to stop light emission. it can.
- the light receiving unit 27 can detect the light propagation amount propagating through the linear material 11, and can also detect the light emission amount of the light emitting unit 28 in the same package. Thereby, both can be monitored. Furthermore, the light emission intensity of the light emitting unit 28 can be adjusted according to the light emission amount detected by the light receiving unit 27.
- linear light source 20 and the linear light source 25 of the first embodiment are used as light sources, it is desirable that the light intensity is high, the light unevenness is small, and the light is emitted in a desired color.
- FIG. 11 is a side view showing a state of light diffusion in the linear light source 30a provided with the linear material 11b.
- the linear light source 30a has the same configuration as the linear light source 20 provided with the linear material 11b instead of the linear material 11.
- the linear material 11b contains the light diffusing substance 31 in the outermost layer of the internal structure of the linear material 11.
- the linear light source 30a In the linear light source 30a, light incident from the end of the linear material 11b is diffused by the light diffusing substance 31 in the vicinity of the outer peripheral surface of the linear material 11b while propagating through the linear material 11b. Thereby, since the light which permeate
- FIG. 12 is a side view showing a state of light diffusion in the linear light source 30b provided with the linear material 11c.
- the linear light source 30b has the same configuration as the linear light source 20 provided with the linear material 11c instead of the linear material 11.
- the linear material 11 c is a material in which the light diffusing substance 31 is contained in the core layer of the internal structure of the linear material 11.
- the linear light source 30b In the linear light source 30b, light incident from the end of the linear material 11c is diffused by the light diffusing substance 31 in the core portion of the linear material 11b while propagating through the linear material 11b. Thereby, the diffused light is emitted to the outside while passing through the outer surface, so that the linear material 11c appears to be further shining. Therefore, it is possible to realize a brighter light source while reducing light unevenness.
- linear light sources 30a and 30b it is possible to control how far the light incident from one end propagates due to the diffusion effect of the linear materials 11b and 11c. However, it is necessary to design a linear material suitable for the application.
- FIG. 13 is a side view showing a state of light emission in the linear light source 35a provided with the linear material 11 with the phosphor 36 applied to the outer peripheral surface.
- the linear light source 35 a has a configuration in which a phosphor 36 is applied to the outer peripheral surface of the linear material 11.
- the phosphor 36 is illustrated in an enlarged manner in order to clearly show that the phosphor 36 is applied.
- the linear light source 35 a In the linear light source 35 a, light incident from the end of the linear material 11 excites the phosphor 36 near the outer peripheral surface of the linear material 11 while propagating through the linear material 11. Thereby, since the light emitted from the light emitting element 12 and the light emitted from the phosphor 36 are emitted to the outside while passing through the outer surface, the linear material 11 can be illuminated with a desired color. .
- a light source of a color For example, by emitting blue light from the light emitting element 12 and selecting a light material whose phosphor 36 is yellow, a white linear light source composed of blue light of the light emitting element 12 and yellow light of the phosphor 36 is realized. Is possible.
- FIG. 14 is a side view showing a state of light emission in the linear light source 35b including the linear material 11 in which the phosphor 36 is mixed.
- the linear light source 35 b has a configuration in which a phosphor 36 is mixed inside the linear material 11.
- the linear light source 35 b In the linear light source 35 b, light incident from the end of the linear material 11 excites the phosphor 36 while propagating through the linear material 11. Thereby, since the light emitted from the light emitting element 12 and the light emitted from the phosphor 36 are emitted to the outside while passing through the outer surface, the linear material 11 can be illuminated with a desired color. . In the linear light source 35b, the inside of the linear material 11 can be made to shine with a desired color.
- the conventionally well-known thing can be used for the light-diffusion substance 31, and what should be contained in which part of the linear material 11 should just be decided according to a use.
- the phosphor 36 can use various well-known colors, and how much and how much the linear material 11 is configured can be determined according to the application.
- the light source may affect the optical characteristics due to the influence of self-heating.
- the influence of heat generation from the light emitting element is large, and the influence on the optical characteristics is large. . Therefore, when a linear light source is used as illumination with high emission intensity, a heat dissipation design that reduces the influence of heat generated from the light emitting element is desired.
- FIG. 15 is a cross-sectional view showing an example of the configuration of the linear light source 40.
- the linear light source 40 includes a heat radiating plate 41 in addition to the configuration of the linear light source 20 of the first embodiment.
- the linear light source 40 is not limited to the configuration of the linear light source 20 of the first embodiment, and can be applied to all linear light sources including the light emitting element 12 described above.
- the heat sink 41 is made of metal and is provided so as to be paired with the light emitting element 12. Moreover, the heat sink 41 has a shape that holds the light emitting element 12 therein so that the light emitting surface and the electrode portion are exposed. In addition, the external shape of the heat sink 41 can have various shapes according to a use and space.
- the heat radiating plate 41 since the heat radiating plate 41 is provided, the self-heating of the light emitting element 12 can be efficiently radiated. Therefore, it is possible to suppress degradation of optical characteristics due to heat dissipation.
- the heat radiating plate 41 may be made of a Peltier element. According to this, low temperature control of the heat sink 41 becomes possible, and it becomes possible to radiate heat efficiently.
- the shape of the heat sink 41 is not limited to the shape shown in FIG.
- it may have a shape that fixes both the linear material 11 and the light emitting element 12 inside.
- This shape has a shape that matches the shape of the light emitting element 12 and the diameter of the linear material 11, and a space is formed so that light emitted from the light emitting element 12 efficiently enters the linear material 11. Yes. Therefore, by providing the heat radiating plate 41a having such a shape, the light coupling rate between the light emitting element 12 and the linear material 11 can be improved.
- FIG. 17 is a cross-sectional view showing an example of the configuration of the linear light source 50.
- the linear light source 50 includes a collimator lens 51 in addition to the configuration of the linear light source 20 of the first embodiment using a semiconductor laser element as the light emitting element 12.
- the linear light source 50 is not limited to the configuration of the linear light source 20 of the first embodiment, and can be applied to all linear light sources including the light emitting element 12 described above.
- the collimating lens 51 is provided to be paired with the light emitting element 12, and is disposed between the light emitting element 12 and the linear material 11. Further, the collimating lens 51 is configured to collimate light in accordance with the size of the entrance of the linear material 11.
- linear light source 50 In the linear light source 50, light emitted from the semiconductor laser by the collimating lens 51 enters the linear material 11 as collimated light. Therefore, it is possible to efficiently make light incident and reduce useless light that does not enter the linear material 11.
- means for efficiently making the light emitted from the light emitting element 12 incident on the linear material 11 is not limited to the collimating lens 51, but may be any optical element such as a lens that converts the light into spot light.
- the light-receiving element built-in light-emitting element 26 is provided as in the linear light source 25 of the first embodiment, the light propagated from the front usually hits the light-emitting element 12, and therefore to the light-receiving part 27. The amount of incident light may be reduced. At this time, the amount of light propagation cannot be detected with high accuracy. Therefore, when the light receiving element built-in light emitting element 26 is disposed, it is desirable to provide means (optical element) for efficiently making the light propagating through the linear material 11 incident on the light receiving part 27.
- FIG. 18 is a cross-sectional view showing a configuration example of the linear light source 55.
- the linear light source 55 includes a hologram element 56 having a light diffraction effect in addition to the configuration of the linear light source 25 of the first embodiment.
- the light-receiving element with a built-in light receiving unit 26 is arranged such that the light receiving surface of the light receiving unit 27 and the light emitting surface of the light emitting unit 28 are different.
- the hologram element 56 is disposed between the light-receiving element with a built-in light receiving portion 26 and the linear material 11.
- the hologram element 56 has a diffraction pattern so that light coming from the front is incident on the light receiving unit 27 with a diffraction effect.
- the linear light source 55 the light propagating from the front, that is, the light radiated and propagated from the light emitting element 12 at the opposite end of the linear material 11 is preferably incident on the light receiving unit 27. Detection accuracy can be improved. Therefore, it is possible to accurately monitor the state of the linear light source 55.
- the hologram element 56 can also effectively emit outgoing light to the linear material 11.
- FIG. 19 is a side view showing a configuration example of the linear light source 60.
- the linear light source 60 includes a linear material 11 and light-receiving element built-in light-emitting elements 26 disposed at both ends of the linear material 11. That is, in the linear light source 60, both means of a light emitting means and a light receiving means are provided at both ends of the linear material 11, respectively. In the configuration in which the light emitting means are provided at both ends of the linear material 11 like the linear light source 60, the light emitting means at both ends are usually turned on at the same time in order to increase the light emission intensity.
- FIG. 20 is a diagram illustrating an example of the light emitting operation and the light receiving operation pattern of each light receiving element built-in light emitting element 26 in the linear light source 60.
- one light receiving element built-in light emitting element 26 is referred to as a semiconductor laser 1 and the other light receiving part built-in light emitting element 26 is referred to as a semiconductor laser 2.
- the semiconductor laser 1 is caused to emit light, and at the same time, the semiconductor laser 2 is received. During this time, the light receiving operation of the semiconductor laser 1 and the light emitting operation of the semiconductor laser 2 are turned off. That is, a light emitting unit signal for driving the light emitting unit 28 to the semiconductor laser 1 and a light receiving unit detection signal for driving the light receiving unit 27 to the semiconductor laser 2 are simultaneously output from a control unit or the like (not shown).
- the semiconductor laser 1 is caused to emit light and at the same time the semiconductor laser 1 is received. During this time, the light receiving operation of the semiconductor laser 2 and the light emitting operation of the semiconductor laser 1 are turned off. That is, a light receiving unit detection signal for driving the light receiving unit 27 to the semiconductor laser 1 and a light emitting unit signal for driving the light emitting unit 28 to the semiconductor laser 2 are output simultaneously from the control means.
- the light emission operation of the semiconductor laser 1 and the light emission operation of the semiconductor laser 2 are switched alternately.
- the semiconductor laser 1 and the semiconductor laser 2 perform a light receiving operation during the light emitting operation. Therefore, by shifting the light emission timing, it is possible to avoid the interference of light from both light emitting units 28 and to individually detect the light propagation amount due to the light emission of each light emitting unit 28 by one light receiving unit 27.
- the timing of switching the light emitting operation be a constant cycle. For example, when each light emitting unit 28 is driven at 60 Hz, an afterimage effect of human eyes can be produced.
- FIG. 21 is a side view showing a configuration example of the linear light source 70.
- the linear light source 70 includes a linear material 11, three light emitting elements 12, and three collimating lenses 51.
- the linear light source 70 includes a light receiving element 21 or a light receiving element with a built-in light receiving unit 26 at one end of a linear material 11 (not shown). Further, the number of the light emitting elements 12 is not limited to three.
- a reflecting mirror 71 is configured inside the linear material 11 so as to divide the inner region.
- the three light emitting elements 12 are respectively arranged so that the emitted light is incident on the divided areas of the linear material 11.
- the two light emitting elements 12 are arranged so as to emit light to the outer peripheral surface of the linear material 11.
- the three light emitting elements 12 use semiconductor lasers and are configured to emit laser beams having different wavelengths.
- the three collimating lenses 51 are respectively disposed between the light emitting element 12 and the linear material 11.
- the linear light source 70 it is possible to cause the linear material 11 to emit light in a plurality of colors by simultaneously lighting the three light emitting elements 12. Therefore, it is possible to realize light sources of various colors according to the application.
- FIG. 22 is a diagram illustrating a configuration example of the linear light source 80.
- FIG. 23 is a cross-sectional view of the linear light source 80, (a) shows the cross-sectional structure of the first linear material portion 81, and (b) shows the cross-sectional structure of the second linear material portion 82.
- the linear material 11 is configured by combining a plurality of portions (first linear material portion 81 and second linear material portion 82) having different side radiation amounts. Yes. That is, in the linear material 11, the first linear material portion 81 and the second linear material portion 82 are made of different materials.
- the 1st linear material part 81 is comprised by 2 layers of the core part 81a and the clad part 81b, as shown to (a) of FIG.
- the core part 81a and the clad part 81b are made of resin or the like.
- the core portion 81a is configured to have a higher refractive index than the cladding portion 81b (the refractive index of the core portion 81a> the refractive index of the cladding portion 81b).
- the first linear material portion 81 has no scattering effect and has very little light emission from the side surface, and thus the light diffusivity to the outside is very low.
- the first linear material portion 81 has very little light emission from the side surface, and the core portion 81a has a higher refractive index than the cladding portion 81b, so the light propagation efficiency to the front is very high. . Therefore, the first linear material portion 81 is a portion having a very low light diffusivity to the outside and high propagation efficiency. That is, in the first linear material portion 81, the side radiation amount is very small.
- the 2nd linear material part 82 is comprised by 2 layers of the core part 82a and the clad part 82b, as shown in FIG.23 (b).
- the core part 82a is made of a scatterer such as special acrylic.
- the clad portion 82b is made of resin or the like.
- the second linear material portion 82 scatters the propagating light to the outside, and the amount of light emitted from the side surface is very large, so that the light diffusivity to the outside is a very high portion. That is, the second linear material portion 82 has a much larger amount of side radiation than the first linear material portion 81.
- the first linear material portion 81 does not emit light to the outside, and the second linear material portion 82 emits light to the outside. In many cases, light is not necessary at the coupling portion of the light emitting element 12 in the linear material 11. Therefore, the first linear material portion 81 with a small amount of side radiation is configured in a portion where light emission is not required, and the first linear material portion 81 with a large amount of side radiation is configured in a portion where light emission to the outside is necessary. Thus, by creating the linear material 11, it becomes possible to increase the light utilization efficiency.
- FIGS. 24 and 25 show an example of an illumination pattern when light display is necessary on the surface of the mount 83.
- the linear light source 80 is attached to the mount 83 such that a part of the linear material 11 is located on the surface of the mount 83 and the light emitting element 12 is located on the back surface of the mount 83. It has been.
- the first linear material portion 81 may be configured in a portion where light is not required, and the second linear material portion 82 may be configured in a portion that is desired to be shown to the outside. As a result, it is possible to make it appear that only the linear material 11 positioned on the surface side of the mount 83 is shining.
- linear light source 100 is shown below.
- FIG. 26 is a diagram illustrating a configuration example when the linear light source 100 is mounted on the air conditioner 110.
- the linear light source 100 includes, for example, a red light emitting element 12 and a blue light emitting element 12.
- the linear light source 100 is lit in blue during cooling operation and lit in red during heating operation. That is, the red light emitting element 12 and the blue light emitting element 12 are switched to emit light. Therefore, the linear light source 100 can perform functional display by performing optical display, and can be used as an indicator for the user to recognize or notify.
- the function display can be performed not only on the air conditioner 110 but also on various home appliances.
- the linear light source 100 is a linear illumination device in particular when a semiconductor laser element is used as the light emitting element 12. Therefore, a higher display effect can be expected than when a normal LED light source is used.
- FIG. 27 is a diagram illustrating a configuration example when the linear light source 100 is mounted on the display device 120.
- the display device 120 includes a liquid crystal device 121 that displays an image, and a linear light source 100 arranged on the back surface of the liquid crystal device 121.
- the linear light source 100 is configured by combining the light wavelength of the light emitting element 12 and the phosphor 36 so as to be a white light source, for example.
- the linear light source 100 can constitute a backlight with the same arrangement as the CCFL (cold cathode fluorescent tube) currently used.
- FIG. 28 is a diagram illustrating a configuration example of the surface of the illumination device 130 using the linear light source 100.
- FIG. 29 is a diagram illustrating a configuration example of the back surface of the illumination device 130 illustrated in FIG. 28.
- the linear light source 100 is configured to be a base material 131 that is passed from the back surface of the base material 131 so that the light emitting element 12 is positioned on the back surface. Thereby, the light emitting element 12 is made invisible from the surface.
- the linear light source 100 can be used in place of a conventionally used neon tube that performs gas discharge.
- a laser beam such as a semiconductor laser element
- the propagation efficiency in the linear material 11 is good, and an illumination effect such as a glare feeling peculiar to the laser beam can be expected.
- the linear light source of the present invention is disposed at one end of a linear material, and emits light so as to enter one end of the linear material, and the linear light source described above. It is a structure provided with the light receiving element which is arrange
- the light propagating through the linear material is detected by the light receiving element. Therefore, if abnormal conditions such as breakage of the linear material, unexpected bending, and failure or misalignment of the light emitting element occur, As compared with, the amount of light propagation detected by the light receiving element changes greatly. Therefore, there is an effect of providing a linear light source capable of detecting an abnormal situation based on the light propagation amount.
- the first light emitting element is disconnected from the electrical connection according to the amount of light propagation detected by the light receiving element. Therefore, when abnormal situations, such as a fracture
- the linear light source of the present invention has a configuration in which the light receiving element is incorporated in the second light emitting element, and the second light emitting element in which the light receiving element is incorporated is the other end of the linear material. It is preferable to emit light so as to be incident on. Thereby, since light enters from both ends of the linear material, it is possible to improve the emission intensity.
- the light receiving element further detects a light emission amount of the second light emitting element, and the second light emitting element emits light intensity according to the light emission amount detected by the light receiving element. Is preferably adjusted.
- the linear light source of the present invention preferably contains a light diffusing substance inside the linear material.
- the linear light source of the present invention has a phosphor coated on the outer peripheral surface of the linear material.
- a phosphor is mixed in the linear material.
- the first light emitting element is a semiconductor laser, and an optical element that causes the light emitted from the first light emitting element to enter the linear material in a collimated or spotted state. Furthermore, it is preferable to provide. Thereby, the emitted light of the first light emitting element can be efficiently incident on the linear material.
- the linear light source of the present invention includes a plurality of semiconductor lasers arranged on the outer peripheral surface of the linear material with respect to the linear material and emitting light so as to be incident on the outer peripheral surface of the linear material. Furthermore, it is preferable that the plurality of semiconductor lasers are configured to emit light having different wavelengths. As a result, the linear material can emit light in a plurality of colors by simultaneously emitting light from the first light emitting element, the (second light emitting element), and the plurality of semiconductor lasers.
- the linear material is preferably configured by combining a plurality of portions having different side radiation amounts.
- the linear light source of the present invention includes light emitting elements with a built-in light receiving element that are disposed at both ends of the linear material and have a structure in which the light receiving element is built in the light emitting element. The light is emitted by the light emitting element so as to enter the end of the linear material, and the light having propagated through the linear material is detected by the light receiving element.
- the electrical connection of the light emitting element of each of the light receiving elements with a built-in light receiving element may be disconnected depending on the amount of light propagation detected by the light receiving element of the other light emitting element with a built in light receiving element. preferable. Accordingly, when an abnormal situation such as breakage of the linear material occurs, the light emitting element of each light receiving element built-in light emitting element is stopped. Therefore, it is possible to prevent light from being emitted to the outside.
- the light receiving element of each light receiving element with a built-in light receiving element further detects the light emission amount of the light emitting element in the same package, and the light emitting element of each light emitting element with a built in light receiving element is the same. It is desirable that the light emission intensity is adjusted according to the light emission amount detected by the light receiving element in the package.
- the linear light source of the present invention preferably contains a light diffusing substance inside the linear material.
- the linear light source of the present invention has a phosphor coated on the outer peripheral surface of the linear material.
- a phosphor is mixed in the linear material.
- the linear light source of the present invention preferably further includes a hologram pattern element that diffracts the light propagating through the linear material so as to enter the light receiving element of the light receiving element with the built-in light receiving element.
- a hologram pattern element that diffracts the light propagating through the linear material so as to enter the light receiving element of the light receiving element with the built-in light receiving element.
- each of the light receiving elements with built-in light receiving elements alternately perform a light emitting operation and perform a light receiving operation during the light emitting operation. Thereby, interference of light from both light emitting elements can be avoided, and the amount of light propagation due to light emission of each light emitting element can be detected individually.
- the linear material is preferably configured by combining a plurality of portions having different side radiation amounts.
- the electronic device of the present invention has a configuration including the linear light source.
- the electronic device is an electronic device having a function of recognizing or notifying by optical display, and can be realized as an electronic device including the linear light source as means for performing the optical display. Furthermore, the electronic device can be realized as a display device including the linear light source as a backlight or an illumination device using the linear light source, for example.
- the present invention can be suitably used not only in the field related to a linear light source using an optical fiber that propagates laser light or the like, but also preferably in a field related to a method of manufacturing a linear light source, It can also be widely used in fields such as display backlights, household electrical appliances having a light display function, and lighting devices using neon tubes.
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- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
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Abstract
Description
本発明の一実施形態について図面に基づいて説明すれば、以下の通りである。以下では、始めに、本実施の形態の線状光源の基本となる構成について説明し、その次に、本実施の形態の線状光源の構成について説明する。
図1は、線状光源10および線状光源10aの構成を示す斜視図である。図2は、図1に示す線状光源10および線状光源10aにおける、発光素子12が配置されている部分の側面図である。
次に、本実施の形態の線状光源20の構成について説明する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1と同じである。また、説明の便宜上、前記の実施の形態1の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1,2と同じである。また、説明の便宜上、前記の実施の形態1,2の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1~3と同じである。また、説明の便宜上、前記の実施の形態1~3の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1~4と同じである。また、説明の便宜上、前記の実施の形態1~4の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1~5と同じである。また、説明の便宜上、前記の実施の形態1~5の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
本発明の他の実施の形態について図面に基づいて説明すれば、以下の通りである。なお、本実施の形態において説明すること以外の構成は、前記実施の形態1~6と同じである。また、説明の便宜上、前記の実施の形態1~6の図面に示した部材と同一の機能を有する部材については、同一の符号を付し、その説明を省略する。
11・11a、11b・11c 線状材料
12 発光素子(第1発光素子)
12a LED素子
12b 半導体レーザ素子
21 受光素子
26 受光部内蔵発光素子(受光素子内蔵発光素子)
27 受光部(受光素子)
28 発光部(第2発光素子、発光素子)
31 光拡散物質
36 蛍光体
41,41a 放熱板
51 コリメートレンズ(光学素子)
56 ホログラム素子(ホログラムパターン素子)
81 第1線状材料部
82 第2線状材料部
110 エアコン(電子機器)
120 表示装置
130 照明装置
Claims (14)
- 入射光を内部で伝播することが可能な線状材料を備え、上記線状材料の内部に光を伝播させることによって発光する線状光源において、
上記線状材料の一方の端に配置され、該線状材料の一方の端に入射するように光を出射する第1発光素子と、
上記線状材料の他方の端に配置され、該線状材料を伝播してきた光を検出する受光素子とを備えていることを特徴とする線状光源。 - 上記第1発光素子は、上記受光素子が検出した光伝播量に応じて電気的接続が切断されることを特徴とする請求項1に記載の線状光源。
- 上記受光素子は、第2発光素子に内蔵された構成を有しており、
上記受光素子を内蔵する第2発光素子は、上記線状材料の他方の端に入射するように光を出射することを特徴とする請求項1に記載の線状光源。 - 上記受光素子は、さらに、上記第2発光素子の発光量を検出し、
上記第2発光素子は、上記受光素子が検出した発光量に応じて発光強度が調整されていることを特徴とする請求項3に記載の線状光源。 - 上記第1発光素子は、半導体レーザであることを特徴とする請求項1に記載の線状光源。
- 上記線状材料の外周面に該線状材料に対してそれぞれ配置され、該線状材料の外周面に入射するように光を出射する複数の半導体レーザをさらに備え、
上記複数の半導体レーザは、それぞれ異なる波長の光を出射するように構成されていることを特徴とする請求項1に記載の線状光源。 - 上記線状材料は、側面放射量が異なる部分が複数組み合わされて構成されていることを特徴とする請求項1に記載の線状光源。
- 入射光を内部で伝播することが可能な線状材料を備え、上記線状材料の内部に光を伝播させることによって発光する線状光源において、
上記線状材料の両端にそれぞれ配置され、発光素子に受光素子が内蔵された構成を有する受光素子内蔵発光素子を備え、
上記各受光素子内蔵発光素子は、上記発光素子により上記線状材料の端に入射するように光を出射するとともに、上記受光素子により該線状材料を伝播してきた光を検出することを特徴とする線状光源。 - 上記各受光素子内蔵発光素子の発光素子は、他方の受光素子内蔵発光素子の受光素子が検出した光伝播量に応じて電気的接続が切断されることを特徴とする請求項8に記載の線状光源。
- 上記各受光素子内蔵発光素子の受光素子は、さらに、同一パッケージ内の発光素子の発光量を検出し、
上記各受光素子内蔵発光素子の発光素子は、同一パッケージ内の受光素子が検出した発光量に応じて発光強度が調整されていることを特徴とする請求項8に記載の線状光源。 - 上記線状材料を伝播してきた光を、上記受光素子内蔵発光素子の受光素子に入射させるように回折するホログラムパターン素子をさらに備えていることを特徴とする請求項8に記載の線状光源。
- 上記各受光素子内蔵発光素子は、交互に発光動作を行うとともに、発光動作の間は受光動作を行うことを特徴とする請求項8に記載の線状光源。
- 上記線状材料は、側面放射量が異なる部分が複数組み合わされて構成されていることを特徴とする請求項8に記載の線状光源。
- 請求項1または8に記載の線状光源を備える電子機器。
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CN2009801388878A CN102171511B (zh) | 2008-10-02 | 2009-09-01 | 线状光源以及电子设备 |
US13/119,391 US8496348B2 (en) | 2008-10-02 | 2009-09-01 | Linear light source and electronic apparatus |
DE112009002343T DE112009002343T8 (de) | 2008-10-02 | 2009-09-01 | Lineare Lichtquelle und elektronische Vorrichtung |
JP2010531798A JP5107433B2 (ja) | 2008-10-02 | 2009-09-01 | 線状光源および電子機器 |
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JP (1) | JP5107433B2 (ja) |
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TWI561761B (en) * | 2014-07-16 | 2016-12-11 | Playnitride Inc | Optical module |
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JP3211483U (ja) * | 2014-07-28 | 2017-07-20 | スリーエム イノベイティブ プロパティズ カンパニー | 細長い光ガイドを有する照明アセンブリ |
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JPWO2010038573A1 (ja) | 2012-03-01 |
JP5107433B2 (ja) | 2012-12-26 |
CN102171511B (zh) | 2013-05-22 |
DE112009002343T5 (de) | 2012-01-19 |
US8496348B2 (en) | 2013-07-30 |
US20110175549A1 (en) | 2011-07-21 |
DE112009002343T8 (de) | 2012-08-30 |
CN102171511A (zh) | 2011-08-31 |
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