CN1819287A - Luminescent light source and luminescent light source array - Google Patents

Abstract

To provide a luminescent light source that can increase the number of divisions of a reflecting mirror without reducing pitch interval of reflection areas. A luminescent light source comprises a reflecting mirror for reflecting light, a mold unit arranged on a light reflection surface of the reflecting mirror, and light emitting devices of three luminescent devices of red, blue and green that are placed in the central part and output light to the mold unit. In the reflecting mirror, rectangular reflection areas are arranged vertically and horizontally in a grid.

Description

Illuminating source and luminescent source array

Technical field

The present invention relates to illuminating source and luminescent source array, particularly utilized the illuminating source and the luminescent source array of LED (light-emitting diode) chip.The invention still further relates to the lighting device that utilized luminescent source array and liquid crystal indicator etc.

Background technology

As large tracts of land and the high illuminating source of light utilization ratio, patent documentation 1 disclosed illuminating source is arranged.Fig. 1 is the profile of the part of the such illuminating source 11 of expression.Illuminating source 11 disposes white or monochromatic light-emitting component 13 on the inside central portion of the mould portion 14 that is made of transparent resin, be the concentric circles figure that forms in the inside of mould portion 14 with the metallic film evaporation of Al or Au, Ag etc., thus formation reflection part 12.Fig. 2 removes the front view that light-emitting component 13 and reflection part 12 are shown after the mould portion 14 from illuminating source 11.Reflection part 12 is a concentric circles, by a plurality of wheel belt shape reflector space 12a, the 12b that are configured to concentric circles ... constitute.

But as shown in Figure 1, in this illuminating source 11, the light L1 of the central portion in the front of inciding mould portion 14 from the light that light-emitting component 13 sends (below, be called direct outgoing zone) 15a sees through direct outgoing zone 15a and injects to face side.And the light L2 of the zone except that the 15a of direct outgoing zone (below, be called the total reflection zone) 15b that incides the front of mould portion 14 is by after the 15b total reflection of total reflection zone, and parts 12 reflections that are reflected see through total reflection zone 15b again and penetrate to the front.Therefore, in such illuminating source 11, about equally by the width of the width A of the light L2 of 1 reflector space (for example 12c) reflection and reflector space (for example being 12c).

In the backlight that colour liquid crystal display device is used, to compare during with the white light source that utilizes White LED etc. when utilizing the polychromatic source of red LED, green LED, blue led etc., the trichromatic colour developing of colour liquid crystal display device is better, has good color reprodubility.But, in illuminating source 11 as above-mentioned structure, when the central part at reflection part 12 disposes the light-emitting component of 3 kinds of illuminant colours of red, green, blue for example and when constituting white light source, exists the light of each color to separate, produces the problem of unevenness of tint in illuminating source 11.The following describes its reason.Fig. 3 shows in illuminating source 11, therein the state of each color of light when light-emitting component 13R, the 13G of 3 kinds of illuminant colours of heart portion configuration red, green, blue, 13B.For example, in Fig. 3, represent red light with LR, represent green light with LG, represent blue light, represent irradiation area with illuminating source 11 red light LR separated by a distance with AR with LB, represent the irradiation area of green light LG with AG, represent the irradiation area of blue light LB with AB.

Under the situation of this illuminating source 11, because a little ground, the position of each light- emitting component 13R, 13G, 13B staggers, so after the 15b reflection of total reflection zone, the exit direction of the light that the regional 12c that is reflected reflects is different according to the color of light, so irradiation area AR, AG, the AB of each color also stagger mutually.So, the light of each color overlap and the zone that becomes white light for beating the zone of oblique line among Fig. 3.As shown in Figure 3, the white light zone of beating oblique line is narrower than reflector space 12c, and in the zone in its outside, emergent light has color, has produced unevenness of tint.

If solve such problem, can with each reflector space 12a, 12b ... cut apart forr a short time, come the cross sectional shape in design reflectivity zone according to the light of each color.For example, in illuminating source shown in Figure 4 16, again reflector space 12c is divided into 3 reflector space 19a, 19b, 19c, in reflector space 19a, reflector space 19a is designed to blue light LB penetrates, in reflector space 19b, reflector space 19b is designed to green light LG penetrates to frontal to frontal, in reflector space 19c, reflector space 19c is designed to red light LR penetrates to frontal.

In the illuminating source 16 of like this design, the light of each color overlap and the zone that becomes white light as shown in Figure 4 and the integral body (that is reflector space 12c) of reflector space 19a, 19b, 19c roughly the same.

From the example of Fig. 4, also can learn, even under the situation of the light-emitting component that adopts polychrome, if increase light source reflection part cut apart number, can reduce the unevenness of tint of illuminating source, improve the uniformity of color.And, in the light-emitting component of monochrome or polychrome, if increase the number of cutting apart of reflection part, can set the direction of advance of light meticulously, therefore improved the degree of freedom of light path design, the exit direction that can regulate light more meticulously, and the uniformity of raising light intensity.

Therefore, consideration with as shown in Figure 5 reflection part 12 cut apart that number (quantity of reflector space) is 3, reflection part 12 that the pitch interval P (width on the radial direction of reflector space) of reflector space 12a, 12b, 12c be 6mm is as basic, each reflector space is divided into again 3 parts reflection part.Such reflection part shown in Figure 6.In the reflection part shown in Fig. 6 12, reflection part 12 to cut apart number be 9, the pitch interval P of reflector space 17a, 17b, 17c, 18a, 18b, 18c, 19a, 19b, 19c is 2mm.Thus, although can improve the color uniformity of illuminating source when utilizing the such reflection part 12 of Fig. 6, because of along with cutting apart several increases, the pitch interval of reflector space narrows down, and the difficulty so the making of reflection part becomes has increased cost.That is, if the number of cutting apart of reflection part 12 becomes big, then existence can not get the performance raising of illuminating source and the problem of the balance between the cost.

And, because light- emitting component 13R, 13G, 13B be by two-dimensional arrangement, thus direction according to the observation, light-emitting component 13R, the 13G of each color, 13B and reflector space 12a, 12b ... between distance be different.Therefore, each reflector space 12a, 12b ... with 1 be the center, have in the reflection part 12 of concentric circles of same distance in a circumferential direction, can't obtain overlapping (colour mixture) of same degree at circumferencial direction on the whole.Be specifically described with reference to Fig. 4, when beginning to be aligned in sequence with red light-emitting component 13R, green light-emitting component 13G, blue light-emitting component 13B from left side head-on, in its left side, from interior all sides begin to be arranged in order the reflector space 19a that vertically penetrates red light, vertically penetrate the reflector space 19b of green light, vertically penetrate the reflector space 19c of blue light.On the contrary, on light-emitting component 13R, 13G, 13B right side, must begin to be arranged in order for the reflector space 19c that vertically penetrates blue light, vertically penetrate the reflector space 19b of green light, vertically penetrate the reflector space 19a of red light from interior all sides.Such configuration can't be realized by the reflector space of wheel belt shape.

Summary of the invention

Main purpose of the present invention provides several illuminating source of cutting apart that can increase reflection part under the situation of the pitch interval that does not reduce reflector space.And another object of the present invention is to set the direction of advance of light in illuminating source in detail, improves the degree of freedom of light path design, thus the exit direction that can regulate light more meticulously.

The 1st illuminating source of the present invention has: the reflection part that light is reflected, be configured in the light guide section of the light reflection surface side of above-mentioned reflection part, with light-emitting component to above-mentioned light guide section projection light, it is characterized in that, above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part, above-mentioned light guide section has light-emitting face, the light that it will send from above-mentioned light-emitting component and penetrate to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection, above-mentioned reflection part has light reflection surface, it will send from above-mentioned light-emitting component, light by the reflection of the light-emitting face of above-mentioned light guide section reflects, and above-mentioned light reflection surface is made of a plurality of reflector spaces of arranging along at least 2 directions.

The 1st illuminating source of the present invention has constituted the light reflection surface of reflection part by a plurality of reflector spaces of arranging along at least 2 directions, so even do not reduce the pitch interval of reflector space, also can increase and count (quantity of reflector space) cutting apart of reflection part.Thereby can set the direction of advance of the light of illuminating source inside meticulously, thus the raising of the degree of freedom of light path design, thus the exit direction that can regulate light more meticulously.Therefore, can make the light distribution homogenizing of the light that sends from illuminating source.In addition, under the situation of the light-emitting component that adopts multiple illuminant colour, can improve the uniformity of color, reduce unevenness of tint, can improve the quality of illuminating source.And, because need not to reduce the pitch interval of reflector space, so improved the degree of freedom of light path design, thereby can regulate the exit direction of light more meticulously, even improve the uniformity of light intensity or color, can not increase difficulty yet, or increase cost the manufacturing of reflection part.

And, arrange a plurality of reflector spaces along at least 2 directions and be not limited to situation about must arrange along 2 vertical directions.For example, also can be the situation of arranging reflector space along by at least 2 directions (that is, radial direction and circumferencial direction) of polar coordinates definition.And, can also arrange along the arbitrary curve at least 2 directions.

The 2nd illuminating source of the present invention has: the reflection part that light is reflected, be configured in the light guide section of the light reflection surface side of above-mentioned reflection part, with light-emitting component to above-mentioned light guide section projection light, above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part, above-mentioned light guide section has light-emitting face, the light that it will send from above-mentioned light-emitting component and penetrate to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection, above-mentioned reflection part has light reflection surface, it will send from above-mentioned light-emitting component, light by the reflection of the light-emitting face of above-mentioned light guide section reflects, and above-mentioned light reflection surface is arranged by a plurality of reflector space mosaic shapes and formed.

Here, a plurality of reflector spaces of mosaic shape arrangement are meant and seamlessly arrange the zone of the reflector space of the roughly the same degree of size (also can be that aspect ratio is about several times) in length and breadth.And each reflector space can also can make up difform reflector space for identical shaped, in addition, can also be the zone of the reflector space of irregular arrangement shape.And each reflector space can be arranged regularly, also can arrange brokenly.

In the 2nd illuminating source of the present invention, arrange a plurality of reflector spaces with the mosaic shape and constitute reflector space, so even do not reduce the pitch interval of reflector space, count (quantity of reflector space) the cutting apart of reflecting surface that also can increase reflection part.Thereby can set the direction of advance of the light of illuminating source inside meticulously, the degree of freedom of light path design improves, the exit direction that can regulate light more meticulously.Therefore, can make the light distribution homogenizing of the light that sends from illuminating source.In addition, under the situation of the light-emitting component that adopts multiple illuminant colour, can improve the uniformity of color, reduce unevenness of tint, can improve the quality of illuminating source.And, because need not to reduce the pitch interval of reflector space, so improved the degree of freedom of light path design, thereby can regulate the exit direction of light more meticulously, even improve the uniformity of light intensity or color, can not increase difficulty yet, or increase cost the manufacturing of reflection part.

The of the present invention the 1st or the execution mode of the 2nd illuminating source in, reflector space is square, rectangle, hexagon, triangle or fan-shaped.Thereby, can seamlessly arrange reflector space and form light reflection surface, can improve the utilization ratio of light.Particularly be divided into its optical axis and be the nebenkern belt-like zone at center and be a plurality of zones with this Region Segmentation along circumferencial direction at light reflection surface with reflection part, when disposing reflector space thus, can seamlessly arrange fan-shaped a plurality of reflector spaces.

In the another kind of execution mode of the of the present invention the 1st or the 2nd illuminating source, it is characterized in that between the reflector space that is arranged with adjacency on all directions of above-mentioned reflector space, the characteristic quantity that characterizes each reflector space is different.

In another execution mode of the of the present invention the 1st or the 2nd illuminating source, it is characterized in that between the reflector space of adjacency on the direction that is arranged with between all directions of above-mentioned reflector space, the characteristic quantity that characterizes each reflector space is different.Here, under the direction of for example arranging reflector space is situation to edge direction, between direction refer to as to the direction between the edge direction to the angular direction.

In above-mentioned 2 kinds of execution modes, if represent each reflector space with the curved face type that comprises the characteristic quantity (parameter) more than 1 or 2 or 2, then by the suitable value of determining the characteristic quantity of each curved surface of sign, can regulate by the reflection of light direction of each reflector space reflection or diffusion etc., can make the design of reflection part become easy.

For example, as above-mentioned characteristic quantity, can select the displacement of above-mentioned each reflector space on the optical axis direction of above-mentioned reflection part, displacement by each reflector space on this optical axis direction of suitable design, can regulate by the reflection of light direction of each reflector space reflection or diffusion etc., can make the design of reflection part become easy.

And, if make above-mentioned each reflector space be rendered as taper seat, utilize the characteristic quantity of radius of curvature, then can regulate reflection of light direction by radius of curvature by each reflector space reflection as taper seat, can improve the uniformity of light intensity in the narrow zone.In addition, under the situation that adopts a plurality of light-emitting components, can in narrow zone, improve colour mixture, improve the uniformity of color.

And, if make above-mentioned each reflector space be rendered as taper seat, utilize the characteristic quantity of circular cone coefficient as taper seat, then can according to from the distance of light-emitting component, utilize the circular cone coefficient to regulate diffusion by the light of each reflector space reflection, can in wide zone, improve the uniformity of light intensity.In addition, under the situation that adopts a plurality of light-emitting components, can in wide zone, improve colour mixture, improve the uniformity of color.

Another execution mode of the of the present invention the 1st or the 2nd illuminating source has the different a plurality of above-mentioned light-emitting component of illuminant colour.In illuminating source of the present invention, even under the light of mixed luminescence look different a plurality of light-emitting components, situation with the colour light emitting different with original light-emitting component, still mixed light equably can reduce unevenness of tint.

If particularly pass through reflector space, the light of each light-emitting component is reflected in the reflector space of adjacency, the light that sends from mutually different light-emitting component generally perpendicularly penetrates to frontal, then can enlarge the scope that the light of each light-emitting component overlaps, thereby reduces unevenness of tint.

Another execution mode of the of the present invention the 1st or the 2nd illuminating source is characterised in that, the surface segmentation of above-mentioned light guide section is become a plurality of zones, for each zone after cutting apart, changes its surperficial inclination angle or incline direction.According to this present embodiment, each regional inclination angle or incline direction that can be by the light guide section surface, the exit direction or the reflection direction of each the regional light after cutting apart of light guide section surface distributed in the adjusting of high-freedom degree ground from light-emitting component.Therefore can further improve the uniformity of the light intensity of illuminating source.And, under the situation of the light-emitting component that has adopted multiple color, can further improve the colour mixture of the light that sends from each light-emitting component, can reduce unevenness of tint.

Luminescent source array of the present invention is characterised in that, has arranged the a plurality of the of the present invention the 1st or the 2nd illuminating source.According to this luminescent source array, can realize the degree of freedom raising of light path design and can regulate the exit direction of light, the also uniform large tracts of land of light distribution and the slim area source of emergent light more meticulously.And, even adopting under the situation of a plurality of light-emitting components, also can be equably the light of each illuminant colour be carried out colour mixture.

The light guide section of the light reflection surface side that has reflection part that light is reflected, is configured in above-mentioned reflection part of the present invention and be characterised in that to have: the step that above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part to the light path establishing method of the illuminating source of the light-emitting component of above-mentioned light guide section projection light; Form light-emitting face at above-mentioned light guide section, make the light that sends from above-mentioned light-emitting component and by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection to the outside penetrate step; With in above-mentioned reflection part, by a plurality of reflector spaces of arranging along at least 2 directions form to send from above-mentioned light-emitting component, by the light reflection surface that the light of the light-emitting face reflection of above-mentioned light guide section reflects, the step of the catoptrical reflection direction of setting each reflector space respectively and being produced.

In the light path establishing method of illuminating source of the present invention, because by a plurality of reflector space reverberation of arranging along at least 2 directions, and can set catoptrical reflection direction respectively, so can set the direction of advance of the light of illuminating source inside meticulously, the degree of freedom of light path design improves, thus the exit direction that can regulate light more meticulously.Therefore, can make the light distribution homogenizing of the light that sends from illuminating source.In addition, under the situation of the light-emitting component that adopts multiple illuminant colour, can improve the uniformity of color, reduce unevenness of tint, can improve the quality of illuminating source.And, because need not to reduce the pitch interval of reflector space, so, also can not increase difficulty, or increase cost to the manufacturing of reflection part even improve the degree of freedom or the color uniformity of light path design.

The light guide section of the light reflection surface side that has reflection part that light is reflected, is configured in above-mentioned reflection part of the present invention and be characterised in that to have: the step that above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part to the light emerging method of the illuminating source of the light-emitting component of above-mentioned light guide section projection light; Form light-emitting face at above-mentioned light guide section, make the light that sends from above-mentioned light-emitting component and the step that penetrates to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection; With in above-mentioned reflection part, form light reflection surface by a plurality of reflector spaces of arranging along at least 2 directions to sending from above-mentioned light-emitting component, reflecting by the light of the light-emitting face reflection of above-mentioned light guide section, the catoptrical reflection direction that is produced by setting each reflector space respectively, adjusting is from the exit direction of the light of the light-emitting face ejaculation of above-mentioned light guide section and the step of light distribution.

In the light emerging method of illuminating source of the present invention, by a plurality of reflector space reverberation of arranging along at least 2 directions, set catoptrical reflection direction respectively, can regulate the exit direction and the light distribution of the light that penetrates from the light-emitting face of light guide section thus, so can set the direction of advance of the light of illuminating source inside meticulously, the degree of freedom of light path design improves, thus the exit direction that can regulate light more meticulously.Therefore, can make the light distribution homogenizing of the light that sends from illuminating source.In addition, under the situation of the light-emitting component that adopts multiple illuminant colour, uniformity, the minimizing unevenness of tint of color can be improved, the quality of illuminating source can be improved.And, because need not to reduce the pitch interval of reflector space, so, also can not increase difficulty, or increase cost to the manufacturing of reflection part even improve the degree of freedom or the color uniformity of light path design.

Lighting device of the present invention has: arranged a plurality of the of the present invention the 1st or the luminescent source array of the 2nd illuminating source and to the supply unit of above-mentioned luminescent source array power supply.According to this lighting device, can provide the lighting device of large tracts of land and uniform light intensity.

Backlight of the present invention is characterised in that, has disposed the a plurality of the of the present invention the 1st or the 2nd illuminating source in same plane.According to this backlight, can provide the backlight of large tracts of land and uniform light intensity.And, show at colour under the situation of usefulness, can reduce unevenness of tint, improve the uniformity of color coloured silk.

Liquid crystal indicator of the present invention has: arranged a plurality of the of the present invention the 1st or the luminescent source array of the 2nd illuminating source and the display panels of relative configuration with above-mentioned luminescent source array.According to this liquid crystal indicator, can make the lightness of picture even.And, in the liquid crystal indicator that colour shows, can improve the uniformity of color.

The execution mode of liquid crystal indicator of the present invention is characterised in that, between above-mentioned luminescent source array and above-mentioned display panels, do not make the optics of the direction of advance of the light that sends from luminescent source array towards the frontal of display panels.Here, be used to make the direction of advance of the light that sends from luminescent source array for example with regard to embodiment, to be meant prismatic lens towards the optics of the frontal of display panels.If use the luminescent source array that constitutes by illuminating source of the present invention, can regulate direction of light or its diffusion of sending accurately, so do not need optics such as employed prismatic lens in existing liquid crystal indicator or the backlight from illuminating source.Consequently, the slimming of liquid crystal indicator can be realized, and installation cost can be cut down.And, because of the light loss due to this optical element disappears, so can improve the utilization ratio of light.

The another kind of execution mode of liquid crystal indicator of the present invention is characterised in that, between above-mentioned luminescent source array and above-mentioned display panels, is not used in the optics of the brightness of the light that raising throws light on to display panels.Here, the optics that is used to improve the brightness of the light that display panels is thrown light on for example is meant that with regard to embodiment brightness improves film.When using the luminescent source array that constitutes by illuminating source of the present invention, can regulate the direction of light sent from illuminating source or its diffusion and improve light intensity, so can not need that employed brightness improves opticses such as film in the existing liquid crystal indicator.Consequently, the slimming of liquid crystal indicator can be realized, and installation cost can be cut down.And, because of the light loss due to this optical element disappears, so can improve the utilization ratio of light.

In addition, the inscape of above explanation of the present invention can combination in any under possible situation.

Description of drawings

Fig. 1 is the profile of a part of the illuminating source of expression conventional example.

Fig. 2 removes the front view that light-emitting component and reflection part are shown after the mould portion in the illuminating source of conventional example.

Fig. 3 is illustrated in the illuminating source of conventional example, therein the fragmentary cross-sectional view of the state of each color of light during light-emitting component of 3 kinds of illuminant colours of heart portion configuration red, green, blue.

Fig. 4 is illustrated in the same illuminating source, the fragmentary cross-sectional view of state during littler ground segmented reflector zone, each color of light.

Fig. 5 is that the front view that number is the reflection part of 3 conventional example is cut apart in expression.

Fig. 6 is that the front view that number is the reflection part of 9 conventional example is cut apart in expression.

Fig. 7 is the stereogram after the part of the illuminating source of expression embodiments of the present invention 1 is dissectd.

Fig. 8 is the stereogram expression state of removing wiring substrate from the illuminating source of embodiment 1, that observe from rear side.

Fig. 9 (a) and Fig. 9 (b) be illustrated in the back side formed reflection part mould portion, the stereogram of observing from face side and the stereogram of observing from rear side.

Figure 10 (a) is illustrated in the front view that the back side has formed the mould portion of reflection part, and Figure 10 (b) is its rearview, and Figure 10 (c) is its upward view.

Figure 11 (a) is the front view of the illuminating source of embodiment 1, and Figure 11 (b) is the profile along the X-X direction (to the angular direction) of Figure 11 (a), and Figure 11 (c) is the profile along the Y-Y direction (to edge direction) of Figure 11 (a).

Figure 12 is the profile that the state of the light in the illuminating source of embodiment 1 is shown.

Figure 13 is the front view that schematically shows employed reflection part in the illuminating source of embodiment 1.

Figure 14 is that expression has and cuts apart the front view of number than the reflection part of the more embodiment 1 of the same reflection part.

Figure 15 is the figure to the light distribution on the angular direction that the illuminating source of conventional example is shown.

Figure 16 be illustrate embodiments of the present invention 1 illuminating source, to the figure of the light distribution on the angular direction.

Figure 17 is the front view of the reflection part of the variation (variation 1) that schematically shows embodiments of the present invention 1, the location mode of the curve form of the reflector space after its explanation is cut apart.

Figure 18 is the front view that schematically shows the reflection part of variation 2 of the present invention, the another kind of location mode of the curve form of the reflector space after its explanation is cut apart.

Figure 19 is used for illustrating that each reflector space is the skeleton diagram that the curvature of the reflection part of taper seat is determined method.

Figure 20 is the figure of definite method of the configuration of the virtual light-emitting component of explanation on all directions or pitch interval.

Figure 21 be explanation under light-emitting component is 5 situation, the figure of the configuration of the virtual light-emitting component on all directions or definite method of pitch interval.

Figure 22 is used for illustrating that each reflector space is the figure that the circular cone coefficient of the reflection part of taper seat is determined method.

Figure 23 is that explanation is under the situation of taper seat at each reflector space, and the circular cone coefficient magnitude is determined the figure of method.

Figure 24 (a) is the front view that is used to illustrate the illuminating source of design example, and Figure 24 (b) is the front view of removing under the state of its mould portion.

Figure 25 is the profile of the illuminating source of Figure 24.

Figure 26 is the figure of definite method of the control look of explanation reflector space.

Figure 27 is the figure of definite method of the step of the then Figure 26 control look of clearly deciding reflector space.

Figure 28 is the figure of definite method of the step of the then Figure 27 control look of clearly deciding reflector space.

Figure 29 is the figure of definite method of the step of the then Figure 28 control look of clearly deciding reflector space.

Figure 30 is the figure of definite method of the step of the then Figure 29 control look of clearly deciding reflector space.

The figure of the irradiation light quantity distribution on Figure 31 photogenic shadow surface that to be expression penetrate from direct outgoing zone.

Irradiation light quantity distribution on Figure 32 photogenic shadow surface that to be expression penetrate from direct outgoing zone, by the irradiation light quantity distribution on the shadow surface of the light of each reflector space reflection and the figure of whole light quantity distribution.

Figure 33 is the figure of another example of definite method of the explanation control look of determining reflector space.

Figure 34 is the figure of definite method of the step of the then Figure 33 control look of clearly deciding reflector space.

Figure 35 is the figure of definite method of the step of the then Figure 34 control look of clearly deciding reflector space.

Figure 36 is the figure of definite method of the step of the then Figure 35 control look of clearly deciding reflector space.

The figure of Figure 37 problem points that to be explanation caused by the arrangement of the control look of Figure 33.

Figure 38 is the figure that explanation solves the method for the such problem points of Figure 37.

Figure 39 (a) is the front view of illuminating source of expression variation 3 of the present invention, (b) be this illuminating source to the profile on the angular direction, (c) be this illuminating source to the profile on the edge direction.

Figure 40 (a) is the stereogram of observing from face side of employed mould portion and reflection part in the variation 3, (b) is the stereogram of observing from its rear side.

Figure 41 (a) is the front view of employed mould portion and reflection part in the variation 3, (b) is its rearview, (c) is its right side view, (d) is its upward view.

Figure 42 is the front view that schematically shows the structure of the reflection part in the variation 3.

Figure 43 is the front view of the structure of the reflection part in the expression variation 4 of the present invention.

Figure 44 is the front view of the structure of the reflection part in the expression variation 5 of the present invention.

Figure 45 is the front view of the structure of the reflection part in the expression variation 6 of the present invention.

Figure 46 is the front view of the structure of the reflection part in the expression variation 7 of the present invention.

Figure 47 is the front view of the structure of the reflection part in the expression variation 8 of the present invention.

Figure 48 is the front view of the structure of the reflection part in the expression variation 9 of the present invention.

Figure 49 is the front view of the structure of the reflection part in the expression variation 10 of the present invention.

Figure 50 is the front view of the structure of the reflection part in the expression variation 11 of the present invention.

Figure 51 is the front view of the structure of the reflection part in the expression variation 12 of the present invention.

Figure 52 is the front view of the structure of the reflection part in the expression variation 13 of the present invention.

Figure 53 is the front view of the structure of the reflection part in the expression variation 14 of the present invention.

Figure 54 is the front view of the structure of the reflection part in the expression variation 15 of the present invention.

Figure 55 is the front view of the structure of the reflection part in the expression variation 16 of the present invention.

Figure 56 is the fragmentary cross-sectional view of the section shape in the direct outgoing zone in the expression variation 17 of the present invention.

Figure 57 is the profile of state of the light in the illuminating source of expression variation 17 of the present invention.

Figure 58 is the front view of the illuminating source in the variation 18 of the present invention.

Figure 59 is the front view of the illuminating source in the variation 19 of the present invention.

Figure 60 is the front view of the illuminating source in the variation 20 of the present invention.

Figure 61 is the front view of the illuminating source in the variation 21 of the present invention.

Figure 62 is the front view of the illuminating source in the variation 22 of the present invention.

Figure 63 is the front view of the illuminating source in the variation 23 of the present invention.

Figure 64 is the front view of the illuminating source in the variation 24 of the present invention.

Figure 65 (a) be the variation 18 of expression shown in Figure 58 illuminating source, to the figure of the state of the light on the section of angular direction, (b) be its figure of expression to the state of the light on the section of edge direction.

Figure 66 (a) be the variation 19 of expression shown in Figure 59 illuminating source, to the figure of the state of the light on the section of angular direction, (b) be its figure of expression to the state of the light on the section of edge direction.

Figure 67 is the front view of the illuminating source in the variation 25 of the present invention.

Figure 68 (a) is the stereogram of the structure in direct outgoing zone in the illuminating source of expression variation 25 and total reflection zone, (b) be this illuminating source to the profile on the edge direction, be to schematically show the figure that divides the state of luminous intensity distribution to each reflector space of this illuminating source (c).

Figure 69 (a) is the stereogram of the structure in direct outgoing zone in the illuminating source of expression comparative example and total reflection zone, (b) be this illuminating source to the profile on the edge direction, be to schematically show the figure that divides the state of luminous intensity distribution to each reflector space of this illuminating source (c).

Figure 70 (a) is the stereogram of the structure in direct outgoing zone in the illuminating source of expression variation 26 and total reflection zone, (b) be this illuminating source to the profile on the edge direction, be to schematically show the figure that divides the state of luminous intensity distribution to each reflector space of this illuminating source (c).

Figure 71 is the front view of the illuminating source in the variation 27 of the present invention.

Figure 72 is the front view of the illuminating source in the variation 28 of the present invention.

Figure 73 is the front view of the illuminating source in the variation 29 of the present invention.

Figure 74 (a) be the explanation variation 29 illuminating source in light state, to the profile on the edge direction, (b) be its front view.

Figure 75 (a) be the explanation comparative example illuminating source in light state, to the profile on the edge direction, (b) be its front view.

Figure 76 is the profile of state of the light in the illuminating source of explanation variation 29.

Figure 77 is the profile of state of the light in the illuminating source of explanation comparative example.

Figure 78 is the front view of the luminescent source array of expression embodiments of the invention 2.

Figure 79 is the summary section of structure of the LCD of expression embodiments of the invention 3.

Figure 80 is the summary section of structure of LCD of the variation of expression embodiments of the invention 3.

Figure 81 is the stereogram that the lighting device that the room lighting of the luminescent source array of embodiments of the invention 4 uses is adopted in expression.

Embodiment

Below, with reference to the accompanying drawings embodiments of the invention are elaborated.But the present invention is not limited to following examples, and can suitably change in design according to purposes.

[embodiment 1]

Fig. 7 is the stereogram after the part of the illuminating source 21 of embodiments of the invention 1 is dissectd.Fig. 8 observes the stereogram remove the illuminating source behind the wiring substrate from rear side.Fig. 9 (a) (b) be form overleaf reflection part 26 mould portion 22 (light guide section), the stereogram of observing from face side and the stereogram of observing from rear side.Figure 10 (a) (b) (c) is front view, rearview and the upward view of this mould portion 22.Figure 11 (a) is the front view of illuminating source 21, and Figure 11 (b) is the profile along the X-X direction (to the angular direction) of Figure 11 (a), and Figure 11 (c) is the profile along the Y-Y direction (to edge direction) of Figure 11 (a).

In this illuminating source 21, by the translucent material of high index of refraction, for example transparent resin is formed with the mould portion (light guide section) 22 that roughly is plate-like.Translucent material as constituting mould portion 22 can use translucent resins such as epoxy resin and acrylic resin, also can use glass material.

As Fig. 7, Figure 10 or shown in Figure 11, the shape of seeing mould portion 22 from the front is a rectangle.Be provided with rounded direct outgoing zone 29 at the front of mould portion 22 central portion, total reflection zone 30 arranged in its arranged outside.Directly outgoing zone 29 is the level and smooth border circular areas that formed by the plane vertical with the central shaft of mould portion 22, and total reflection zone 30 also is the level and smooth zone that is formed by the plane vertical with the central shaft of mould portion 22.And, in illustrated embodiment, directly outgoing zone 29 and total reflection zone 30 are formed in the same plane, directly outgoing zone 29 is positioned on the height identical with total reflection zone 30, but also can make direct outgoing zone 29 more outstanding, thereby make direct outgoing zone 29 higher than total reflection zone 30 in ditch 25 internal ratio total reflection zones 30.On the contrary, also can make direct outgoing zone 29 than total reflection zone 30 more in the retraction ditch 25, thereby make direct outgoing zone 29 lower than total reflection zone 30.In addition, though directly outgoing zone 29 is to make the light that sends from light-emitting component 24R, 24G, 24B directly to the zone of outside outgoing, as described later, also has the effect of the light total reflection of the incident of making on literal sense.Equally, though total reflection zone 30 has the effect of the light of the incident of making to reflection part 26 side total reflections on literal sense, also have light transmission of the incident of making and the effect of penetrating to the outside.

Directly be provided with the ditch 25 that is circular between outgoing zone 29 and the total reflection zone 30, the plane by in the form of a ring on the bottom surface of ditch 25 is formed with total reflection zone 31.And, on the inner circumferential side side of ditch 25, forming the inclination total reflection zone 32 of inclination, inclination total reflection zone 32 is to form the round table-like of tapering the closer to the more little mode of the front face side diameter of mould portion 22.Though total reflection zone 31 and inclination total reflection zone 32 also are the effects that has the light total reflection of the incident of making on literal sense, the part in the light of institute's incident also may see through inclination total reflection zone 32 and penetrate to the outside.

As shown in Figure 9, the back side bending of mould portion 22, this back side is provided with and is used to reflect by the specular reflection part 26 of the concave surface of the light of the front total reflection of mould portion 22.Reflection part 26 can be the metal tunicle of Au, the Ag of evaporation on the back side of mould portion 22 (picture surface), Al etc., it can be the whitewash that is coated on the back side of mould portion 22, can be mirror finish is carried out on the surface and to have improved the metallic plate of the aluminium etc. of surface reflectivity, can be the curved slab of the surface having been implemented the electroplated metal of Au, Ag, Al etc. or resin etc., can also be the curved slab that has been coated with whitewash from the teeth outwards.

As shown in figure 10, from the light exit direction, the light reflection surface of reflection part 26 forms the mosaic shape by a plurality of reflector spaces of arranging along at least 2 directions.Be provided with the reflector space 36 of wheel belt shape in the around openings of the central portion that is positioned at reflection part 26, in the peripheral region of reflector space 36, reflection part 26 is split into many rows, multiple row, thereby is divided into reflector space 28i, 28j, the 28k of checkerboard.These reflector spaces 28i, 28j, 28k ... constituted the reflecting surface of concentric circles.And, reflector space 28i, 28j, 28k ... Deng light reflection surface be minute surface, but the light reflection surface of reflector space 36 also can make some matsurfaces, makes the light diffusion.

And as shown in Figure 9, at the back side of mould portion 22 central portion, reflection part 26 forms opening.In the opening of reflection part 26, formed the recess 27a of semi-spherical shape at the back side of mould portion 22 central portion, the outstanding protuberance 27b that ring-type is set around recess 27a.

In assembling during this illuminating source 21, as shown in figure 11, on the surface of wiring substrate 23, install have redness, light-emitting component 24R, 24G, the 24B of 3 led chips of green, blue illuminant colour etc., fixed support 34 on the surface of wiring substrate 23 again.Next, in the recess 27a at mould portion 22 back sides, fill transparent resins 35 such as thermosetting resin or uv-hardening resin, support these mould portions 22 (holding state of the mould portion 22 that realizes by support 34 shown in Figure 8) by being fixed on support 34 on the wiring substrate 23.Then, by making transparent resin 35 sclerosis, utilize transparent resin 35 that mould portion 22 and wiring substrate 23 joints are one.And light-emitting component 24R, 24G, 24B are sealed in the transparent resin 35 in the position of more being partial to optical axis side the place ahead than the hemispherical center that forms recess 27a.

In addition, transparent resin 35 can be the material identical materials with mould portion 22, also can be different materials.And, electronic circuit of the light quantity that is used to regulate light-emitting component 24R, 24G, 24B etc. also can be installed in the space between wiring substrate 23 and the mould portion 22 (spaces in transparent resin 35 outsides).

Above-mentioned illuminating source 21 is of a size of, and the profile during for example from top view is long 30mm, and wide 30mm, the thickness during transverse observation are 5mm, compare thin thickness with profile.And the recess 27a at mould portion 22 back sides forms the semi-spherical shape of radius 3.90mm.But recess 27a is 1/2 slightly littler than ball, and the radius of the opening portion of recess 27a is 3.25mm.And numerical value described here is an example, and these sizes suitably are designed to optimum value according to the efficient of light-emitting component or desired light quantity etc.

Figure 12 is the profile of the state of the structure of expression illuminating source 21 of the present invention and the light that sends from light-emitting component 24R, 24G, 24B, shows the section on the angular direction.And among the figure, light illustrates with the arrow of fine rule.For reflector space, begin to be followed successively by reflector space 28s, reflector space 28t, reflector space 28u, reflector space 28v from a side near reflector space 36.Make light-emitting component 24R, the 24G of red, green, blue 3 looks of the central part that is configured in illuminating source 21, when 24B is luminous, the light that sends from light-emitting component 24R, 24G, 24B, incide on the direct outgoing zone 29 with the light of the angle of emergence θ 1 littler (＜θ c) outgoing than the cirtical angle of total reflection θ c on the interface of mould portion 22, the direct outgoing of this light transmission zone 29 and directly forwards penetrating from illuminating source 21.In addition, the light that penetrates with the angle of emergence θ 3 bigger than cirtical angle of total reflection θ c (＞θ c) incides on the total reflection zone 31, and this light is incided on the reflector space 28s thus by total reflection zone 31 total reflections, after the regional 28s reflection that is reflected, see through total reflection zone 30 and ejaculation forwards.And as shown in figure 12, when slightly inclination being arranged in total reflection zone 31, angle of emergence θ 3 also can be slightly littler than cirtical angle of total reflection θ c.In addition, the light that penetrates with the angle of emergence θ 4 bigger than cirtical angle of total reflection θ c (＞θ 3) incides on the total reflection zone 30, and this light is incided reflector space 28t thus by total reflection zone 30 total reflections, after the regional 28t reflection that is reflected, see through total reflection zone 30 and ejaculation forwards.And, the light that penetrates with the angle of emergence θ 5 also bigger than angle of emergence θ 4 (＞θ 4) or the angles of emergence bigger than θ 5 is by total reflection zone 30 total reflections, incide thus on reflector space 28u or the reflector space 28v, after regional 28u, the 28v reflection that is reflected, see through total reflection zone 30 and forwards penetrate.And, to incide on the inclination total reflection zone 32 to the angle of emergence θ 1 in direct outgoing zone 29 and the light that sends from light-emitting component 24R, 24G, 24B to the angle of emergence θ 2 between the angle of emergence θ 3 in total reflection zone 31 (θ 1＜θ 2＜θ 3), after being tilted total reflection zone 32 and directly 2 total reflections are carried out in outgoing zone 29, incide on the reflector space 36.Be reflected regional 36 light that reflect towards the reflection of the bight of illuminating source 21, by total reflection zone 30 and reflector space 28v reflection, forwards penetrate from the bight thus again.

And, in this embodiment 1 because with the mosaic shape arrange square or rectangular reflector space 28i, 28j, 28k ... constituted reflection part 26, so can improve the color uniformity in the illuminating source 21.Particularly with white light source when the illuminating source 21, can reduce unevenness of tint and part is painted.Below this point is described in detail.

Figure 13 is the front view that schematically shows reflection part 26.Central portion at reflection part 26 is provided with opening, and light-emitting component 24R, 24G, 24B are configured in the opening.The light reflection surface of reflection part 26 is split into many rows, multiple row, be arranged with to checkerboard reflector space 28i, 28j, 28k ...In Figure 13, for the purpose of simplifying the description, it is less that the reflection part that illustrates is cut apart number, and reflection part 26 is divided into 5 rows, 5 row.Therefore, reflection part 26 remove have 24 reflector space 28i, 28j behind the opening portion, 28k ... Reflector space 28i, 28j, 28k ... constituted the reflecting surface of concentric circles.If like this reflection part 26 is formed concentric circles, then can make illuminating source 21 slimming more.And, by according to separate parameter designing each reflector space 28i, 28j, 28k ..., can carry out optimal design to each zone, can be luminous more equably.

For each reflector space 28i, 28j, 28k ... curve form, preferably be designed to from the front of illuminating source 21 the such shape of emergent light equably as far as possible.For example, can make each reflector space 28i, 28j, 28k ... be respectively the taper seat shown in following (1) formula.

[formula 1]

$Z=\frac{{\mathrm{CV\ρ}}^2}{1+\sqrt{1-{\mathrm{CV}}^2(\mathrm{CC}+1){\mathrm{\ρ}}^2}}+A+{\mathrm{a\ρ}}^4+b{\mathrm{\ρ}}^6+{\mathrm{c\ρ}}^8+{\mathrm{d\ρ}}^{10}+......---\left(1\right)$

Wherein, $\mathrm{\&rho;}=\sqrt{{\mathrm{<figure-callout\; id="2"\; label="X"\; filenames="A20061000141100811.png,A20061000141100821.png"\; state="\{\{state\}\}">X</figure-callout>}}^2+{\mathrm{<figure-callout\; id="2"\; label="Y"\; filenames="A20061000141100811.png,A20061000141100821.png"\; state="\{\{state\}\}">Y</figure-callout>}}^2}$

Here, X, Y, Z are to be the vertical coordinate of initial point with the center on the reflection part 26, and the optical axis of Z axle and reflection part 26 and the central shaft of mould portion 22 are consistent.ρ looks observed distance from initial point (radius) in the projection of XY plane (promptly to) in the front.And, CV be reflection part 26 or reflector space 28i, 28j, 28k ... curvature (=1/ radius of curvature), CC is the circular cone coefficient, and A is the displacement of the middle mind-set Z-direction of reflection part 26, a, b, c and d be respectively 4 times, 6 times, 8 times, 10 times ... asphericity coefficient.Wherein, the value of these coefficients respectively at each reflector space 28i, 28j, 28k ... set.

In the accompanying drawing of specification of the present invention, with identical hachure pattern illustrate the characteristic quantity (below, be called the curved surface constant) of the curve form that characterizes reflecting surface, for example above-mentioned curvature CV or circular cone coefficient CC, aspheric constants a, b ... Deng the reflector space that equates.In reflection part shown in Figure 13 26, will be designed to have identical curved surface constant from the equidistant reflector space at its center.And, in the reflection part 26 of Figure 13, suppose reflector space 28i, 28j, 28k ... pitch interval P be 6mm.

When the reflection part 12 of the reflection part 26 of Figure 13 and conventional example shown in Figure 5 was compared, pitch interval P was 6mm, and the positive size of illuminating source also equates.But in the conventional example of Fig. 5, the number of cutting apart of reflector space is no more than 3, and with respect to this, in the reflection part 26 of Figure 13, it cuts apart number is 24.And, when the reflector space that the curved surface constant is identical (excentric equidistant reflector space) is concentrated in groups, in the conventional example of Fig. 5, be no more than 3 kinds, with respect to this, in the reflection part 26 of Figure 13, be 5 kinds.Like this, according to the illuminating source 21 of present embodiment 1, can set the direction of advance of light more meticulously than conventional example, the degree of freedom of light path design improves, thereby can regulate the exit direction of light more meticulously, can mix the light of each color equably, prevent the painted of illuminating source 21.And, can under the situation that does not change pitch interval P, increase and cut apart number, so, also can not increase difficulty, or increase cost to making even number is cut apart in increase.

And, further with each reflector space 28i, 28j of reflection part 26,28k ... during trisection, each reflector space narrows down as shown in Figure 14.At this moment, reflector space 28i, 28j, 28k ... pitch interval P be 2mm, reflection part 26 to cut apart number be 216.Reflection part 12 based on Fig. 5, with each reflector space 12a, 12b, 12c trisection and reflector space 17a, the 17b of the reflection part 12 of the Fig. 6 that obtains, 17c, 18a, 18b ... situation under, pitch interval P is 2mm, but reflection part 12 to cut apart number only be 9.Therefore, the pitch interval P of reflector space becomes more little, or the size of illuminating source becomes big more, and the reflection part 26 of embodiment 1 is remarkable more with respect to the superiority of the reflection part of the conventional example that is divided into wheel belt shape, also further improved the degree of freedom of light path design or color uniformity etc.

Illuminating source 21 according to embodiment 1, because the light that sends from light-emitting component 24R, 24G, 24B forwards penetrates after reflecting repeatedly between the total reflection zone 30 of mould portion 22 etc. and reflection part 26, so can obtain optical path length in the inside of illuminating source 21, consequently, can make the light intensity homogenizing of sending and forwards penetrating from illuminating source 21 from light-emitting component 24R, 24G, 24B.And, under the situation of utilizing light-emitting component 24R, the 24G of multiple color, 24B, can improve the colour mixture degree of the light that sends from illuminating source 21.

In the illuminating source 21 of embodiment 1, can than in the past more meticulously to each reflector space 28i, 28j of reflection part 26,28k ... cut apart, so the light path design degree of freedom during design illuminating source 21 improves, thereby the exit direction that can regulate light more meticulously.Particularly in the illuminating source 21 of embodiment 1, as mentioned above, (1) can obtain inner optical path length.And, (2) by than cut apart meticulously in the past each reflector space 28i, 28j of obtaining, 28k ..., can design meticulously that light reflects or the direction of outgoing.And, (3) by than cut apart more meticulously in the past each reflector space 28i, 28j of obtaining, 28k ..., can design the diffusion of light meticulously.(1)～(3) result is can improve the uniformity of the light intensity in the illuminating source 21, and under the situation of the light-emitting component that utilizes multiple color, can improve the colour mixture degree.

Figure 15 shows under the situation of the illuminating source of the concentric circles that reflection part 12 is divided into wheel belt shape as Fig. 5 or Fig. 6, to the light distribution on the angular direction, Figure 16 show when as Figure 13 or Figure 14, reflection part 26 being divided into checkerboard to the light distribution on the angular direction.The transverse axis of Figure 15, Figure 16 represent to record from the center of reflection part 26 to the distance on the angular direction, the longitudinal axis is represented the light intensity of position.Relatively Figure 15 and Figure 16 as can be known, in existing mode, light intensity changes with ± 15% amplitude approximately, but under the situation of present embodiment, the intensity variations amplitude is about ± 8%, thereby improved the uniformity of light intensity.

And, in the above-described embodiments, determine the curved surface constant, but the location mode with reflector space of identical curved surface constant is arbitrarily according to distance from the center of reflection part 26.For example, in variation shown in Figure 17 1, determine in reflection part 26 by the distribution in the delta-shaped region (1/8 zone of reflection part 26) of enclosed with dashed lines, and about 2 angular direction and 2 opposite side traverse line symmetrical manner are determined distribution in other zone with it.

In addition, the light distribution of illuminating source 21 becomes evenly, the uniformity of color improves if be designed to, then the reflection part 26 of variation 2 as shown in figure 18 is such, each reflector space 28i, the 28j after cutting apart, 28k ... also can random arrangement, have mutually different curved surface constant.But when each reflector space of random arrangement, big although the degree of freedom of design becomes, it is big that the unevenness of tint of illuminating source 21 can become.That is, illustrated in fig. 4 like that, in order to reduce the unevenness of tint of illuminating source, need consider light-emitting component arrangement order and arrange the reflector space that vertically penetrates each color of light with predefined procedure.On the other hand, because light-emitting component and reflector space are arranged as 2 dimension shapes, even so angular direction or each opposite side direction have been determined reflector space regularly, the light that also can produce same color in the reflector space of adjacency is to zone that frontal vertically penetrates according to each.Therefore, need the accommodation reflex zone, make can not produce such zone.

The method for designing of each reflector space then, is described.At first, utilize Figure 19 curvature CV with above-mentioned (1) formula to be described as the curved surface constant, the method for designing when changing at each reflector space.Here, because will handle as one group in 3 zones of adjacency on to angular direction or the direction parallel, so in Figure 19, only show 3 reflector spaces of its adjacency with the limit.These 3 reflector spaces are made as 28R, 28G, 28B, and its curvature is made as CVr, CVg, CVb respectively.Here, reflector space 28R is the reflector space that is designed to make the red light sent from light-emitting component 24R vertically to penetrate to frontal, reflector space 28G is the reflector space that is designed to make the green light sent from light-emitting component 24G vertically to penetrate to frontal, and reflector space 28B is designed to reflector space that blue light is vertically penetrated to frontal.If as shown in Figure 19, begin to dispose successively red light-emitting component 24R, green luminousing element 24G, blue light emitting device 24B from the left side towards drawing, then in order to reduce the unevenness of tint of light-emitting component 21, in this face, reflector space need be arranged in from the left side beginning that heads on is reflector space 28B, reflector space 28G, the reflector space 28R (with reference to Fig. 4) that red light is penetrated to frontal that green light is penetrated to frontal that blue light is penetrated to frontal successively.And, the regional reflex if will be reflected and the color of the light that vertically penetrates to frontal is called the control look of this reflector space, then reflector space 28R just is called the reflector space of control look for redness, reflector space 28G is called the control look and is green reflector space, and reflector space 28B is called the control look and is blue reflector space.

The curvature CV of taper seat can make the direction of advance by the light of each reflector space reflection change, if reduce curvature CV, then the light by this reflector space reflection tilts laterally, if increase curvature CV, then the light by this reflector space reflection tilts to the inside.Therefore, wait curvature CVr, the CVg of the reflector space 28R, the 28G that design adjacency, 28B, CVb etc., the exit direction that then can regulate the light among each reflector space 28R, 28G, the 28B if consider the position of distance H, each reflector space 28R, 28G, 28B between the surface of the light-emitting face of pitch interval Q, light-emitting component 24R, 24G, 24B between each light-emitting component 24R, 24G, the 24B and mould portion 22.Therefore, if arrangement according to light-emitting component 24R, 24G, 24B, determine the priority of control look etc. of the reflector space of adjacency, and consider that these factors design curvature CVr, CVg, CVb etc., then can enlarge the overlapping white light zone (beating the zone of oblique line among Figure 19) of regional AB of regional AG, the blue light LB of regional AR, the green light LG of red light LR, can realize not having the uniform white light of unevenness of tint.For example, in the such structure of Figure 19, make that red light LR vertically penetrates to face side in reflector space 28R, in reflector space 28G, green light LG vertically penetrates to face side, in reflector space 28B, blue light LB vertically penetrates to face side, thus with the curvature CVg of the reflector space 28G of central authorities as benchmark, the curvature CVr of the reflector space 28R of feasible close central side is bigger than CVg, and the curvature CVb of the reflector space 28B that decentre is far away is littler than CVg.

But when determining the curvature of reflector space like that as mentioned above, its curvature changes according to the position of light-emitting component 24R, 24G, 24B.In fact, because each light-emitting component 24R, 24G, 24B and nonessential forming a line, so its position and pitch interval Q can change along with direction of observation.For example, shown in Figure 20 (a), in situation about determining to the curved surface constant of reflector space 28R, 28G on the edge direction K1,28B, under situation about determining the curved surface constant of reflector space 28R, 28G on the K2 of angular direction, 28B, the configuration of light-emitting component 24R, 24G, 24B need be handled as different situations.

For example, consider to be positioned at Figure 20 (a) to reflector space 28R, 28G on the edge direction K1,28B the time, shown in Figure 20 (b), utilization projects to each light-emitting component 24R, 24G, 24B on the straight line of edge direction K1 and the virtual light-emitting component 32R, 32G, the 32B that obtain, determines the curved surface constant of reflector space 28R, 28G, 28B.Promptly, curved surface constant to the reflector space 28R on the edge direction K1 is defined as vertically penetrating to frontal from the red light that virtual light-emitting component 32R sends, curved surface constant to the reflector space 28G on the edge direction K1 is defined as vertically penetrating to frontal from the green light that virtual light-emitting component 32G sends, and the curved surface constant of the reflector space 28B on the edge direction K1 is set at the blue light that sends from virtual light-emitting component 32B vertically penetrates to frontal.And, consider to be positioned at Figure 20 (a) to reflector space 28R, 28G on the K2 of angular direction, 28B the time, shown in Figure 20 (b), need to utilize each light-emitting component 24R, 24G, 24B are projected on the straight line of angular direction K2 and the virtual light-emitting component 33G, 33R, the 33B that obtain, determine the curved surface constant of reflector space 28R, 28G, 28B.Promptly, curved surface constant to the reflector space 28R on the K2 of angular direction is defined as vertically penetrating to frontal from the red light that virtual light-emitting component 33R sends, curved surface constant to the reflector space 28G on the K2 of angular direction is defined as vertically penetrating to frontal from the green light that virtual light-emitting component 33G sends, and the curved surface constant of the reflector space 28B on the K2 of angular direction is defined as vertically penetrating to frontal from the blue light that virtual light-emitting component 33B sends.

And, in example shown in Figure 20, because uniformly-spaced configuration projects to virtual light-emitting component 32R, 32G, 32B on the straight line of edge direction K1, and also uniformly-spaced configuration projects to virtual light-emitting component 33G, 33R, 33B on the straight line of angular direction K2, so that the design of each reflector space becomes is easy.

And Figure 21 (a) (b) shows the situation of utilizing 5 light-emitting components.For example under the situation of utilizing red, green, blue light-emitting component, the brightness of these light-emitting components is inequality, therefore sometimes for the brightness of each color of balance equably, makes up each light-emitting component with certain proportion.For example, in Figure 21 (a), because the brightness height of red light-emitting component 24R, so adopt the light-emitting component 24R of 1 redness, and adopt two greens and blue light-emitting component 24G, 24B respectively.

At this moment, on to edge direction K1, shown in Figure 21 (b), can regard both sides as at the virtual light-emitting component 32R of redness, green and blue virtual light-emitting component 32G, 32B repeatedly are configured on the same position mutually, so can determine the control look and the curvature CV of each reflector space with the configuration of such virtual light-emitting component accordingly.On to edge direction K1, designed reflector space 28R accordingly with the virtual light-emitting component 32R of redness, with the reflector space 28GB that the green that being positioned at left side head-on on the edge direction K1 and blue virtual light-emitting component 33G, 33B is designed accordingly in all sides and reflector space 28R adjacency, design reflector space 28GB accordingly in outer circumferential side and reflector space 28R adjacency with virtual light-emitting component 33G, 33B to the green that being positioned at right side head-on on the edge direction K1 and blueness.

And, on to angular direction K2, shown in Figure 21 (b), can regard the centre between the virtual light-emitting component 33B of blueness as, the virtual light-emitting component 33G repeated configuration of the virtual light-emitting component 33R of 1 redness and 2 greens is on same position, so determine control look and curvature CV accordingly with such joining of virtual light-emitting component.For example, design accordingly the reflector space 28RG on the K2 of angular direction with red and green virtual light-emitting component 33R, 33G, with the reflector space 28B that the virtual light-emitting component 24B that is positioned at the upper left side on the K2 of angular direction is designed accordingly in all sides and reflector space 28RG adjacency, with the reflector space 28B that the virtual light-emitting component 24B that is positioned at the lower right side on the K2 of angular direction is designed accordingly in outer circumferential side and reflector space 28RG adjacency.

Equally, on to angular direction K3, shown in Figure 21 (b), can regard the centre between the virtual light-emitting component 33G of green as, the virtual light-emitting component 33B repeated configuration of the virtual light-emitting component 33R of 1 redness and 2 bluenesss is on same position, so determine control look and curvature CV accordingly with the position of such virtual light-emitting component.For example, design accordingly the reflector space 28RB on the K3 of angular direction with red and blue virtual light-emitting component 33R, 33B, with the reflector space 28G that the virtual light-emitting component 33G that is positioned at the lower-left side on the K3 of angular direction is designed accordingly in all sides and reflector space 28RB adjacency, with the reflector space 28G that the virtual light-emitting component 33G that is positioned at the upper right side on the K3 of angular direction is designed accordingly in outer circumferential side and reflector space 28RB adjacency.

Method for designing when changing the circular cone coefficient CC of above-mentioned (1) formula at each reflector space then, is described as the curved surface constant.Circular cone coefficient CC can make the diffusion by the light of this reflector space reflection change, if reduce circular cone coefficient CC, then the diffusion by the light of this reflector space reflection becomes big, if increase circular cone coefficient CC, then the diffusion by the light of this reflector space reflection reduces.Therefore, when design circular cone coefficient CC, can be based on the distance H between the surface of the light-emitting face of light-emitting component 24R, 24G, 24B and mould portion 22, distance D 1 between reflector space and light-emitting component 24R, 24G, the 24B, D2 etc., determine circular cone coefficient CC, the brightness or the colour mixture degree of the feasible light that penetrates from each zone of illuminating source 21 become even.

Particularly, as shown in figure 22, can and light-emitting component 24R, 24G, 24B between short reflector space 28R, the 28G of distance D 1,28B in, reduce circular cone coefficient CC, and light-emitting component 24R, 24G, 24B between long reflector space 128R, the 128G of distance D 2,128B in, increase circular cone coefficient CC.Consequently, in light-emitting component 24R, 24G, 24B near reflector space 28R, 28G, 28B, the diffusion of emergent light increases, and has wide directive property.In light-emitting component 24R, 24G, 24B near reflector space 28R, 28G, 28B, optical path length is short though the light quantity that arrives is many, therefore the light of each color is difficult to mix, but can be by reducing the directive property of constant of the cone CC, spread reflection light, in that being disperseed, light suppresses to realize the raising of colour mixture degree in the brightness.With respect to this, in light-emitting component 24R, 24G, 24B reflector space 128R, 128G far away, 128B, form colour mixture though optical path length is long, and on the other hand, the light quantity that arrives is few, but by increasing circular cone coefficient CC catoptrical directive property is narrowed down, even what can sacrifice the colour mixture degree, also reduce the dispersion of light, improve brightness.Therefore, according to this method for designing, can be in the homogenizing that realizes light intensity on the whole of illuminating source 21, and, can realize the uniformity of color in the colour mixture of the balance on the whole degree of illuminating source 21.But, be not that this method for designing is best, because light intensity and colour mixture degree that purpose is to be designed to be fixed on the shadow surface (target face) in the design in the place ahead of illuminating source reach best, so light intensity on the target face and colour mixture degree are designed to optimal results, the situation that can also have the diffusion from the light of the near reflector space of light-emitting component to narrow down.

On the other hand, along each reflector space 28i, 28j of continuous axle (line) design reflectivity face 26,28k ... the time, carry out ray trace or fine setting easily.Therefore, design reflectivity zone 28i, 28j, 28k ... the time, at first be positioned to the angular direction or to the design of the reflector space on the edge direction.Like this, after determining to be positioned to angular direction K2 or curved surface coefficient CC to the reflector space on the edge direction K1, shown in the solid arrow among Figure 23, to determine the circular cone coefficient CC of each reflector space from the center of light-emitting component 24R, 24G, 24B reflector space far away more, the big more mode of circular cone coefficient CC.Then, the curved surface constant of the reflector space of design and these reflector space adjacency.At this moment, shown in the dotted arrow among Figure 23, can be so that from edge direction be tended to more to the angular direction, circular cone coefficient CC is big more.

Then, illustrate according to method as above-mentioned principle specific design reflection part 26.Figure 24 (a) is the front view of illuminating source 21 of light-emitting component 24B that respectively disposes light-emitting component 24G, the blue-light-emitting of light-emitting component 24R, the green emitting of 1 emitting red light at central portion (b), and removing its mould portion 22 front view afterwards, Figure 25 is that it is to the profile on the angular direction.From the overall dimension of the top view of this illuminating source 21 is respectively to be 30mm in length and breadth.Respectively reflection part 26 is being cut apart 15 times on the direction in length and breadth, form cancellous reflector space 28a, 28b ..., each reflector space 28a, 28b ... respectively be 2mm longitudinally and laterally.Each light-emitting component 24R, 24G, 24B are the triangle configuration, and red light-emitting component 24R is arranged on the direction parallel with the upward bottom of reflection part 26 with blue light-emitting component 24B, and is configured in left and right sides head-on, and green light-emitting component 24G disposes its upside.And directly the diameter in outgoing zone 29 is 5mm, and the internal diameter of the bottom surface of ditch 25 (diameter) is 5.5mm, and the top external diameter (diameter) of ditch 25 is 10mm, and ditch 25 degree of depth are 1.8mm.

At first, illustrate determine each reflector space 28a, 28b ... in each the step of control look.At first, determine 4 to angular direction K2, K3, K5, K6 and 4 arrangements to the control look on edge direction K1, K4, K7, the K8.Because the configuration of light-emitting component 24R, 24G, 24B is identical with configuration shown in Figure 20, therefore as can be known, on to angular direction K2, K6, be arranged with virtual light-emitting component 33G, 33R, 33B from the upper left side to the lower right side by the explanation relevant with Figure 20.Like this, upper left side head-on to angular direction K2 on, from the inboard to the outside, the order of control look is green (G), red (R), blue (B), the lower right side to angular direction K6 on, from the inboard to the outside, the order of control look is blue (B), red (R), green (G).

On to angular direction K3, K5, arrange virtual light-emitting component 33R, 33B, 33G from side direction upper right side, lower-left, therefore the lower-left side that heads on to angular direction K3 on, from the inboard to the outside, the order of control look is red (R), blue (B), green (G), the upper right side to angular direction K5 on, from the inboard to the outside, the order of control look is green (G), blue (B), red (R).

And, in the horizontal direction, be arranged with virtual light-emitting component 32R, 32G, 32B to the right from the left side, therefore the level in the left side of heading on to edge direction K1 on, from the inboard to the outside, the order of control look is red (R), green (G), blue (B), the level on right side to edge direction K4 on, from the inboard to the outside, the order of control look is blue (B), green (G), red (R).

In addition, in vertical direction, the virtual light-emitting component 32B that can regard the virtual light-emitting component 32R of 1 redness and 1 blueness as repeatedly is configured on the same position, the viridescent virtual light-emitting component 32G of configuration with being adjacent, so upside vertical to edge direction K7 on, from the inboard to the outside, the control look is green (G), red and blue (RB), downside vertical to edge direction K8 on, from the inboard to the outside, the control look is red and blue (RB), green (G).The state of having determined the order of the control look on all directions K1～K8 like this shown in Figure 26.

As mentioned above, determine after the order of the control look on all directions K1～K8, as shown in figure 27, at first determine for example control look to each reflector space on the K2 of angular direction of upper left side of a direction.For example, if determined the control look of the reflector space in the upper left corner arbitrarily, then the control look on the K2 of angular direction is determined by unique.

Then, will be to the arrangement of the control look on the K2 of angular direction as starting point, the control form and aspect that do not make the reflector space of adjacency up and down with in, determine to be positioned at the control look of reflector space of the peripheral part of reflection part 26.At this moment, on all directions K1, K3 ~ K8 beyond the K2, do not change the order of the control look of determining like that as mentioned above, and only in the last shift position of all directions K1, K3 ~ K8.Figure 27 illustrates the state of the control look of having determined peripheral part like this.

And, as shown in figure 28, control look based on each reflector space of the control look of each reflector space on direction K1, K2, K4, K5, the K7 and peripheral part, in the zone of the first half of reflection part 26, the control form and aspect that do not make the reflector space of adjacency up and down with in, determine the control look of blank reflector space.

At this moment, under the distribution state of control look shown in Figure 28, in the α part, the green control look left and right sides is adjacent.Under the continuous up and down situation of the control look of such same color, the control look at this place is replaced on trial property ground, and the control look of reflector space that is adjusted to adjacency is inequality.Figure 29 be the α of Figure 28 part and near replace the control look of red, green, blue one by one, make it discontinuous.

Then, as shown in figure 30, determine the control look of the reflector space of the latter half, make that the control look with the reflector space of the first half forms the line symmetry about horizontal direction K1-K4.The control look of the reflector space of the latter half of determining by such line symmetry operation and the sequence consensus of the initial control look of determining.At this moment, no problem when the quantity of the reflector space of vertically arranging is odd number, but when the quantity of the reflector space of vertically arranging is even number, up and down the control form and aspect between the neighbouring reflector space of the along continuous straight runs in the central portion with.Therefore, in this case, need attempt property ground at this place and replace the control look, make the control look of reflector space of adjacency inequality.Therefore, be preferably reflector space and arrange odd number.

In addition, under the situation of not expecting above-mentioned such symmetry operation, similarly determine the control look of the reflector space of the latter half separately with the control look of the reflector space of definite the first half, between the first half and the latter half, under the continuous up and down situation of the control look of same color, also can regulate.Like this reflection part 26 has all been determined after the control look, with regard to the batch operation of finishing control look.

And, according to counting or shape cutting apart of reflector space, no matter how to regulate the distribution of control look sometimes, the control look between the reflector space of adjacency is all identical up and down.Under these circumstances, must preferentially make from the control look of light-emitting component position far away not overlappingly, in the near reflector space of light-emitting component, make identical control look adjacency.As mentioned above,, be difficult to influence the colour mixture of illuminating source 21, so can near light-emitting component, carry out wrinkling processing because be controlled to scattered reflection light from the near reflector space of light-emitting component.

Determine like this after the control look of each reflector space, can be with the constant of each reflector space, particularly curvature CV is designed so that the light of this color vertically penetrates to frontal.But the control look is that the reflector space of red and blue (RB) is meant and is designed on a certain direction, the reflector space that redness of sending from virtual light-emitting component 32R, the 32B that is positioned at redness on the same position and blueness and blue light vertically penetrate to frontal.

Determine like this after the control look of each reflector space, determine the curvature or the shape of each reflector space, its light is penetrated to frontal according to controlling look.Particularly, under the situation that reflector space is made of taper seat, can determine circular cone coefficient CC or curvature CV as its parameter.

At first, consider circular cone coefficient CC is defined as all penetrating light equably from illuminating source 21.For the light that sends from illuminating source 21, can be divided into from the light of light-emitting component 24R, 24G, the direct ejaculation of 24B and the light that penetrates by reflection part 26 reflection backs.Therefore, need know from the light quantity distribution of the light of light-emitting component 24R, 24G, the direct outgoing of 24B.As shown in figure 12, this is the light from direct outgoing zone 29 outgoing.

Figure 31 shows the distribution of the irradiation light quantity that light produced that penetrates from the direct outgoing zone 29 of illuminating source 21.This irradiation light quantity is the irradiation light quantity that is positioned at from the last shadow surface (target face) of the distance of the positive 20mm of illuminating source 21.The transverse axis of Figure 31 is represented center from illuminating source 21 in the distance that the angular direction is recorded, and the longitudinal axis represents to shine the relative value of light quantity, and light quantity is by normalization, and making its maximum is 1.And the curve C 29 among Figure 32 is the light quantity distribution of Figure 31 to be carried out part amplify the curve that shows.Thereby, if consider illuminating source 21 that Figure 24 and Figure 25 are such to the angular direction, then on its section, be arranged in order 5 reflector space 28a, 28b, 28c, 28d, 28e from the inboard, preferably to the irradiation light quantity of the light that frontal penetrates the irradiation light quantity distribution of light on target face that penetrates from direct outgoing zone 29 replenished, obtain roughly light quantity distribution uniformly as a whole from these reflector spaces 28a, 28b, 28c, 28d, 28e.

For example, irradiation light quantity distribution for the light that penetrates from direct outgoing zone 29 shown in Figure 31, if the irradiation light quantity by the light that penetrates after each reflector space 28a, 28b, 28c, 28d, the 28e reflection is distributed as the distribution of being represented by C28a, C28b, C28c, C28d, C28e as among Figure 32, then Zheng Ti irradiation light quantity distribution Ctotal becomes roughly light quantity distribution uniformly.But in the end of illuminating source 21, under the situation that is arranged with a plurality of illuminating sources 21, the light of 4 light-emitting components 21 of adjacency is overlapping, so in single illuminating source 21, the light quantity of end can be less.

Therefore, light quantity distribution at the light that penetrates from direct outgoing zone 29 is under the situation of the distribution shown in Figure 31, shown in figure 32, can be respectively 1 times, 1.8 times, 2 times, 2 times, 1 times of peak value of the light that penetrates from direct outgoing zone 29 by the peak value of the irradiation light quantity of the light of each reflector space 28a, 28b, 28c, 28d, 28e reflection.Incide light quantity on reflector space 28a, 28b, 28c, 28d, the 28e along with sharply reducing away from the center, therefore when considering that this point is obtained the circular cone coefficient CC of reflector space 28a, 28b, 28c, 28d, 28e, each circular cone coefficient CC is followed successively by-5 ,-2 ,-1.5 ,-1 ,-1.

Obtain like this after the circular cone coefficient CC of each reflector space 28a, 28b, 28c, 28d, 28e, obtain the curvature CV of each reflector space 28a, 28b, 28c, 28d, 28e according to the control look of being obtained, being adjusted to the light of respectively controlling look penetrates to frontal from each reflector space 28a, 28b, 28c, 28d, 28e, improve the colour mixture on the target face of illuminating source 21, guarantee the uniformity of color.Particularly, the curvature CV of each reflector space 28a, 28b, 28c, 28d, 28e is followed successively by 1/5,1/29,1/28,1/31,1/31.Like this, on to the angular direction, obtain after the circular cone coefficient CC or curvature CV of each reflector space 28a, 28b, 28c, 28d, 28e, obtain the circular cone coefficient CC or the curvature CV of remaining reflector space in the same way, determine the shape of each reflector space.Light distribution shown in Figure 16 has represented to determine like this distribution of the irradiation light quantity on the target face of illuminating source 21 of curved surface constant.

And, as another example, consider light-emitting component 24R in the central configuration redness, one to angular direction K2, K6 on, at the green light-emitting component 24G of its both sides configuration, another to angular direction K3, K5 on, at the such illuminating source of Figure 33 of the blue light-emitting component 24B of both sides configuration.Configuration of this light-emitting component and configuration shown in Figure 21 are basic identical, and the number of permutations in length and breadth of reflector space 28R, 28G, 28B also is 15 in the same manner.At this moment, also can learn by the explanation relevant with Figure 21, the upper left side to angular direction K2 and lower right side to angular direction K6 on, the control look is green (G) and red/blue secondary colour (RB), the lower-left side to angular direction K3 and upper right side to angular direction K5 on, the control look is blue (B) and red/green secondary colour (RG), and K1, K4 are last in the horizontal direction is red (R) and green/blue secondary colour (GB), also is red (R) and green/blue secondary colour (GB) on vertical direction K7, K8.

Therefore, in this case, as shown in figure 33, the upper left side to angular direction K2 and lower right side to angular direction K6 on, the secondary colour (RB) of alternate allocation green (G) and red/blue is as the control look.The lower-left side to angular direction K3 and upper right side to angular direction K5 on, the secondary colour (RG) of alternate allocation indigo plant (B) and red/green is as the control look.On K1, the K4, look is controlled in alternate allocation red (R) and green/blue secondary colour (GB) conduct in the horizontal direction.And on vertical direction K7, K8, also look is controlled in alternate allocation red (R) and green/blue secondary colour (GB) conduct.

But, any one to angular direction, horizontal direction, vertical direction on, the control look that two ends are set at 3 kinds of control looks is also all identical, if therefore it is arranged repeatedly, then on to angular direction, horizontal direction or vertical direction, the control look of same color is continuous, produces unevenness of tint.For example, consider, the virtual light-emitting component 33G of 2 greens is divided into virtual light-emitting component 33G (1), virtual light-emitting component 33G (2) angular direction K2.And, if the control look of virtual light-emitting component 33G (1) is made as G (1), the control look of virtual light-emitting component 33G (2) is made as G (2), then as shown in figure 37 to the arrangement of the control look on the K2 of angular direction.At this moment, from from the emergent ray of each virtual light-emitting component 33G (1) shown in Figure 37,33R, 33B, 33G (2) as can be known, in a part, green light is concentrated and intensive, and in a part, green light is sparse, has produced unevenness of tint.

Therefore, under these circumstances, as shown in figure 38, be preferably the light that only makes from a virtual light-emitting component (from the virtual light-emitting component of the near side of reflector space) and penetrate to the front.For example, on to angular direction K2, only alternately arrange on the K2 of angular direction from the control look of the virtual light-emitting component 33G (1) of the near green of reflector space and red/blue virtual light-emitting component 33R, the control look of 33B, and do not use the control look of virtual light-emitting component 33G (2).Like this, also can from the ray plot of Figure 38, learn, can access the even light distribution that does not have unevenness of tint.

Therefore, determine after the control look on all directions,, only consider control look, make the control look of same color discontinuous from the virtual light-emitting component of the near side of corresponding reflector space for the repeated control look.Thereby, as shown in figure 34, upper left side and lower right side to angular direction K2, K6 on, alternately arrange green control look (G) and red/blue control look (RB), lower-left side and upper right side to angular direction K3, K5 on, alternately arrange blue control look (B) and red/green control look (RG).And, on K1, K4 and vertical direction K7, the K8, alternately arrange red control look (R) and green/blue control look (GB) in the horizontal direction.But, the control look G on the K2 of angular direction is based on the virtual light-emitting component 33G (24G) that is positioned at the upper left side, the control look G on the K6 of angular direction is based on the virtual light-emitting component 33G's (24G) that is positioned at the lower right side.Situation on other direction is also identical therewith.

Determine like this respectively controlling after the look in the reflector space on angular direction, horizontal direction and the vertical direction, as shown in figure 34, determine the control look at least on one side along the peripheral part that is positioned at reflection part 26.When determining the control look, make the control look of same color use 6 kinds of control looks up and down discontinuously, the control look of each reflector space is determined on trial property ground.

And, in the zone (for example to the zone between angular direction K2 and the K3) that control look has around been determined, for the reflector space of blank, the application controls look, make that the control look of same color is discontinuous up and down, as shown in figure 35, for example on about 1/4 zone, determine the control look.Afterwards, the control look that will determine symmetrically with respect to the diagonal line is transferred in remaining zone, as shown in figure 36, and for all distribution control looks.

Determine like this after the control look of each reflector space, can with the situation of 3 light-emitting components similarly, determine the curved surface constant of circular cone coefficient CC or curvature CV etc., make uniform light penetrate to frontal.

In the above-described embodiments, dimetric reflection part 26 is divided into be dimetric a plurality of reflector space 28i, 28j, 28k ..., but in addition can also be various forms.Figure 39～shown in Figure 42 is the variation 3 of illuminating source 21, be be hexagonal reflection part 26 from top view according to the hexagonal reflector space 28i identical, 28j, 28k with its profile ... the example of cutting apart.Figure 39 (a) is the front view of the illuminating source of variation 3.Figure 39 (b) (c) be respectively corresponding illuminating source to the profile on the angular direction with to the profile on the edge direction.Figure 40 (a) is respectively to have formed the stereogram of observing from face side of mould portion 22 of reflection part 26 and the stereogram of observing from rear side overleaf (b).And Figure 41 (a) is the front view of this mould portion, and Figure 41 (b) is its rearview, and Figure 41 (c) is its right side view, and Figure 41 (d) is its upward view.And Figure 42 is the front view that schematically shows employed reflection part 26 in this illuminating source.For forming hexagon, its reflection part 26 also forms hexagon to this illuminating source 21 from top view.And, hexagonal reflection part 26 seamlessly be divided into hexagonal a plurality of reflector space 28i, 28j, 28k ...

Reflector space 28i, the 28j of the such shape of variation 3,28k ... the time, shown in Figure 42 to edge direction K9-K9 on, reflector space is continuous, but shown in Figure 42 to angular direction K10-K10 on, reflector space is (in a part, by the border between the reflector space) that disperses.Under these circumstances, can be at first to design curved surface constant, for example curvature CV or circular cone coefficient CC separately along reflector space, next to determining the curved surface constant successively with the reflector space of this reflector space adjacency to the edge direction configuration.In addition, because it is cut and form platform shape to be positioned at the part of reflector space at edge of reflection part 26, so its effective area diminishes.In the reflector space at hexagon edge jaggy, can suppose at first that the reflection at edge is shaped as hexagon design, the bigger value of determining as hexagon for hexagon reflector space distribution ratio jaggy of circular cone coefficient.The profile of reflection part 26 and each reflector space 28i, 28j, 28k ... the identical situation of shape under because can design in the above described manner, so easily the curved surface constant of curvature CV or circular cone coefficient CC etc. is regulated.

Figure 43 is the front view of the structure of the reflection part 26 in the expression variation 4.On this reflection part 26, with leg-of-mutton reflection part 26 according to leg-of-mutton a plurality of reflector space 28i, 28j, 28k ... cut apart.At this moment, if consider reflector space on the line segment K11-K11 of central authorities on connection summit shown in Figure 43 and limit, then be positioned at outermost reflector space (that is, be positioned at the reflector space at place, summit and be positioned at limit central authorities reflector space) excentric distance is inequality.Thereby, in this variation, can be not the reflector space on the design lines section K11-K11 successively, but begin design from the reflector space 28h that is positioned at the summit.Promptly, if at first the reflector space 28h that is positioned at summit, 3 place is designed circular cone coefficient etc., the reflector space 28h that will be positioned at the summit designs the reflector space of adjacency successively as starting point, and advance to the inside, then easily the curved surface constant of curvature CV or circular cone coefficient CC etc. is regulated.

In addition, Figure 44, Figure 45 and Figure 46 represent with reflection part 26 according to reflector space 28i, the 28j of the shape that is different from its profile, 28k ... the variation of cutting apart.Variation 5 shown in Figure 44 and variation 6 shown in Figure 45 be with dimetric reflection part 26 according to leg-of-mutton a plurality of reflector space 28i, 28j, 28k ... the variation of cutting apart, variation 7 shown in Figure 46 be with hexagonal reflection part 26 according to leg-of-mutton a plurality of reflector space 28i, 28j, 28k ... the variation of cutting apart.According to these variation 5～7, can to reflector space 28i, 28j, 28k ... further segment.On the other hand, for from light-emitting component 24R, 24G, 24B light, because the direction of reflector space is disperseed the difficulty so the design of each reflector space becomes with radial ejaculation.Thereby, under the situation of these variation, be preferably as follows and design.

Dimetric reflection part 26 is divided into leg-of- mutton reflector space 28i, 28j, 28k ... Figure 44 and the variation 5,6 of Figure 45 in, become the border between the reflector space on to edge direction K12-K12, but on to angular direction K13-K13, reflector space disposes continuously.Thereby, in this case, can design reflector space then successively at first to being arranged in to curved surface constants such as the design of the reflector space on the K12-K12 of angular direction circular cone coefficients with corresponding reflector space adjacency.

And, hexagonal reflection part 26 is divided into leg-of-mutton a plurality of reflector space 28i, 28j, 28k ... the variation 7 of Figure 46 in, become the border between the reflector space on to angular direction K14-K14, but on to edge direction K15-K15, reflector space disposes continuously.Thereby, in this case, can design reflector space then successively at first to being arranged in to curved surface constants such as the design of the reflector space on edge direction K15-K15 circular cone coefficients with corresponding reflector space adjacency.

In addition, Figure 47～Figure 49 is to be the center with light-emitting component 24R, 24G, 24B, and reflection part 26 is divided into the nebenkern band shape, along the circumferential direction the Region Segmentation of wheel belt shape is become a plurality of variation again.That is, in the reflection part 26 of variation shown in Figure 47 8, with dimetric reflection part 26 be divided into wheel belt shape and radial and constitute a plurality of reflector space 28i, 28j, 28k ...In the reflection part 26 of variation shown in Figure 48 9, with hexagonal reflection part 26 be divided into concentric circles and radial and constitute a plurality of reflector space 28i, 28j, 28k ...In the reflection part 26 of embodiment shown in Figure 49 10, with leg-of-mutton reflection part 26 be divided into concentric circles and radial and constitute a plurality of reflector space 28i, 28j, 28k ...And variation 11 that also can be as shown in figure 50 is such, and the reflector space in each orientation is staggered on radial direction.

In these variation 8～11, since the size decreases of the near reflector space of decentre portion, the difficulty so near the making of the reflector space the central part becomes.Therefore, can in the wheel belt shape zone in the outside, increase and cut apart number, reduce the number of cutting apart of the near reflector space of decentre portion.In these variation, because, can be taken at radial configuration identical on all directions, so the adjusting of the design of reflection part 26 or curved surface constant becomes easy for from light-emitting component 24R, 24G, 24B light with radial ejaculation.

And, Figure 51, Figure 52 be the reflector space 28i, the 28j that make the shape identical, 28k with the profile of reflection part 26 ... rotation, according to this reflector space 28i, 28j, 28k ... the variation of segmented reflector parts 26.Variation 12 shown in Figure 51 be according to reflector space 28i, 28j, the 28k of the quadrangle (being rhombus) of 45 ° of rotations ... the example of cutting apart dimetric reflection part 26.Variation 13 shown in Figure 52 be according to the hexagonal reflector space 28i of rotation after 30 ° or 90 °, 28j, 28k ... the example of cutting apart hexagonal reflection part 26.In these variation 12,13 because reflector space light quantity easily not enough to the angular direction on continuously, so that the design of reflector space becomes is easy.But, because be easy to generate the reflector space of the shape of many cut parts at periphery, the loss of light takes place easily.In such variation because reflector space on to the angular direction continuously, so carry out easily along the design of the reflector space that the angular direction is arranged.And,, carry out the design of reflection part 26 or the adjusting of curved surface constant easily by from beginning design reflectivity zone successively with reflector space to the reflector space adjacency on the angular direction.

Figure 53～Figure 55 be according to reflector space 28i, the 28j, the 28k that arrange difformity or size from the distance of light-emitting component 24R, 24G, 24B ..., 28x, 28y, 28z ... variation.That is, in the variation shown in Figure 53 14, on dimetric reflection part 26, formed dimetric reflector space 28i, 28j, 28k ..., 28x, 28y, 28z ..., decentre is far away more, and the size of reflector space is big more.If design such reflection part 26, according to the reflector space of size maximum the integral body of reflection part 26 is cut apart, from outermost reflector space begin to be divided into successively in length and breadth 1 part (promptly not cutting apart), 2 parts, 3 parts ...

And, in the variation shown in Figure 54 15, in hexagonal reflection part 26, formed hexagonal reflector space 28i, 28j, 28k ..., 28x, 28y, 28z ... the part that decentre is far away more, reflector space 28i, 28j, 28k ..., 28x, 28y, 28z ... size big more.At this moment, also can at first cut apart hexagonal reflection part 26 integral body equably, and then the inside of the reflector space of size maximum is cut apart according to the hexagonal reflector space of size maximum.

In the variation shown in Figure 55 16, in leg-of-mutton reflection part 26, formed leg-of- mutton reflector space 28i, 28j, 28k ..., 28x, 28y, 28z ... the part that decentre is far away more, reflector space 28i, 28j, 28k ..., 28x, 28y, 28z ... size big more.According to this variation, it is big that the degree of freedom of design becomes, and the uniformity of light intensity or color improves.At this moment, also can be at first according to the leg-of-mutton reflector space of size maximum equably reflection part 26 integral body of diabolo cut apart, and then the inside of the reflector space of size maximum is cut apart.

In the such variation 14～16 in Figure 53～55, can at first reflection part 26 be divided into the reflector space of identical size and design each curved surface constant, cut apart each reflector space again and the curve form of the reflector space after cutting apart is finely tuned, so carry out the design of reflection part 26 easily.And, in such variation, the light quantity of the light that sends from light-emitting component 24R, 24G, 24B is many, so the degree of freedom of design increases, the uniformity of light intensity improves, but then, because near the light-emitting zone the central part becomes small, the difficulty so near the making of the light-emitting zone the central part becomes.

And the shape of mould portion 22 also can be carried out various design alterations.For example, in the variation shown in Figure 56 17, direct outgoing zone 29 is formed the curved surface of coniform, round table-like, dome shape etc.If direct outgoing zone 29 is formed such curved surface, then can wait and regulate by inclination total reflection zone 32 total reflections, incide the reflection of light direction in direct outgoing zone 29, thereby improve the design freedom of reflection part 26 according to its inclination angle or curvature.

Figure 57 be used for illustrating the light that makes direct outgoing zone 29 form cone shape variation 17 state to the profile on the angular direction.Make direct outgoing zone 29 have the appropriate tilt angle if make direct outgoing zone 29 form coniform like this, then such shown in Figure 57, can make the mutual almost parallel of light that penetrates from direct outgoing zone 29.

The front shape of mould portion 22 or ditch 25 etc. also can be carried out various design alterations.For example, in the variation shown in Figure 58 18, be to be formed with circular ditch 25 and circular direct outgoing zone 29 in the dimetric illuminating source 21 in profile.And, in the variation shown in Figure 59 19, be ditch 25 and the dimetric direct outgoing zone 29 that is formed with four square ring shapes in the dimetric illuminating source in profile.In the variation shown in Figure 60 20, be ditch 25 and the hexagonal direct outgoing zone 29 that is formed with the hexagonal ring-type in the hexagonal illuminating source in profile.In the variation shown in Figure 61 21, be ditch 25 and the leg-of-mutton direct outgoing zone 29 that is formed with the triangle ring-type in the leg-of-mutton illuminating source in profile.

In the such variation 18 of Figure 58, can with design direct outgoing zone 29 from the illuminating source 21 that is configured in central part accordingly with the light of radial ejaculation, so directly the design in outgoing zone 29 is easy to.And in the such variation 19～21 of Figure 59～Figure 61, design freedom increases, and the uniformity of light intensity or color improves.

And, in the variation shown in Figure 62 22, be that profile is set in the dimetric illuminating source 21 is dimetric ditch 25 in profile, the heart is provided with circular direct outgoing zone 29 therein.In the variation 23 of Figure 63, be that hexagonal ditch 25 is set in the hexagonal illuminating source in profile, the heart is provided with circular direct outgoing zone 29 therein.In the variation shown in Figure 64 24, be that profile is set in the leg-of-mutton illuminating source 21 is leg-of-mutton ditch 25 in profile, the heart is provided with circular direct outgoing zone 29 therein.

One side compares with the variation 18,19 of Figure 58 and Figure 59 and illustrate that on one side making the peripheral shape of ditch 25 corresponding with the profile of illuminating source 21, making direct outgoing zone 29 is the advantages of the variation 22～24 of circle as Figure 62～Figure 64.Figure 65 (a) (b) shows the variation 18 of Figure 58 of the ditch 25 that circular certain width is set, and Figure 65 (a) represents it to the section on the angular direction, and Figure 65 (b) represents that it is to the section on the edge direction.As Figure 65 (a) (b) shown in, to each reflector space 28p, 28q on the section of edge direction, 28r ... the section of length comparison angular direction on each reflector space 28s, 28t, 28u ... length shorter, on to edge direction with the angular direction is compared, each reflector space 28p, 28q, 28r ... more be partial to central side.Therefore, for example shown in Figure 65 (a), on section to the angular direction, even be designed to from light-emitting component 24R, 24G, 24B send, by the light of total reflection zone 31 reflections of the bottom side of ditch 25 from the inboard incide the 2nd reflector space 28s all on, on the section shown in Figure 65 (b) to edge direction, light by 31 reflections of total reflection zone not only incides on the 2nd the reflector space 28p from the inboard, also incides on the 3rd the reflector space 28q from the inboard.Therefore, in reflector space 28q, also receive light by 31 reflections of total reflection zone, complicated thereby the design of reflector space 28q becomes.

On the other hand, Figure 66 (a) (b) shows the variation 19 of Figure 59 of ditch 25 that the profile that is provided with illuminating source 21 forms the certain width of four square ring shapes accordingly, Figure 66 (a) shows it to the section on the angular direction, and Figure 66 (b) shows it to the section on the edge direction.At this moment, to each reflector space 28p, 28q on the section of edge direction, 28r ... length also to compare each reflector space 28s, 28t on the section of angular direction, 28u ... length shorter, on to edge direction with the angular direction is compared, each reflector space 28p, 28q, 28r ... more to be partial to central side.But, under Figure 58 and Figure 65 (a) variation 18 situations (b), profile direction is not depended in the position of ditch 25, but it is certain, with respect to this, under the situation of Figure 59 and Figure 66 (a) variation 19 (b), on section to edge direction, compare with the section to the angular direction, central side more is partial in the position of ditch 25.Therefore, can be on the section shown in Figure 66 (a) to the angular direction, be designed to from light-emitting component 24R, 24G, 24B send, by the light of total reflection zone 31 reflections of the bottom side of ditch 25 from the inboard incide the 2nd reflector space 28s all on, and on the section shown in Figure 66 (b) to edge direction, also can be designed to by the light of total reflection zone 31 reflections from the inboard incide the 2nd reflector space 28p all on.Therefore, according to such variation 19, it is easy that the design of reflector space becomes.But, in such variation 19, there is following shortcoming: because directly outgoing zone 29 is quadrangle, so by dimetric direct outgoing zone 29 reflections or see through the light with radial ejaculation from light-emitting component 24R, 24G, 24B, thereby diffused light increases.In the variation 20,21 of Figure 60 and Figure 61, there is such shortcoming too.

With respect to this, form quadrangle accordingly in profile with the profile of ditch 25 and illuminating source 21, the heart is provided with in the variation 22 of Figure 62 in circular direct outgoing zone 29 therein, can and Figure 66 (a) (b) in the same manner no matter on to the angular direction or on, the light by 31 reflections of total reflection zone is incided on specific reflector space 28s, the 28p to edge direction.And, according to variation 22, because directly outgoing zone 29 be circular, so can suppress the generation of diffused light by direct outgoing zone 29 reflection or through from light-emitting component 24R, 24G, 24B light in the same manner on all directions with radial ejaculation.Same this action effect that exists in the variation 23,24 of Figure 63, Figure 64.

Variation 25 shown in Figure 67 be the total reflection zone 31 with ditch 25 bottom surfaces be divided into a plurality of cut zone 31a, 31b ... illuminating source 21.And Figure 68 (a) is the stereogram of the structure in the direct outgoing zone 29 of this illuminating source 21 of expression and total reflection zone 31.Figure 68 (b) is the figure of the state of the light in this illuminating source 21 of expression (c), and Figure 68 (b) is the summary section to the illuminating source on the edge direction 21, and Figure 68 (c) is its front view.And in Figure 68 (b), total reflection zone 31 expressions of being represented by chain-dotted line are than the part in the total reflection zone 31 of the more close observation side of the section of this figure.According to this variation 25, it is big that the degree of freedom of design becomes, thereby can improve the uniformity of light intensity or color.In variation 25,8 five equilibriums are carried out in total reflection zone 31, along the circumferential direction alternately arrange cut zone 31a and cut zone 31b.The incline direction of cut zone 31a and cut zone 31b is reverse along circumferencial direction, and is configured to make the light to the edge direction ejaculation to spread, make on the light that the angular direction is penetrated focuses on the angular direction to both sides.

Figure 69 (a) represents that the axle center with direct outgoing zone 29 is the stereogram in the total reflection zone 31 with uniform inclination angle at center.Figure 69 (b) is the figure of the state of the light in this illuminating source of expression (c), and Figure 69 (b) is the summary section to the illuminating source on the edge direction 21, and Figure 69 (c) is its front view.In comparative example with such total reflection zone 31, as Figure 69 (b) (c) shown in, the light that sends from light-emitting component 24R, 24G, 24B is being radial diffusion after by 31 reflections of total reflection zone, thus light result of uniform distribution on all directions be, to angular direction glazing quantity not sufficient.With respect to this, in the variation shown in Figure 67 25, as Figure 68 (b) (c) shown in, because cut zone 31a and cut zone 31b, be configured to make to the light that edge direction is penetrated and spread, make on the light that the angular direction is penetrated focuses on the angular direction to both sides, so with edge direction is compared light more to the angular direction is assembled, thereby more light quantity is assigned on the angular direction, can improve the light intensity on the front of illuminating source 21 and the uniformity of color thus.

Figure 70 (a) is the stereogram of the structure in the direct outgoing zone 29 of illuminating source 21 of expression variation 26 and total reflection zone 31.Figure 70 (b) is the figure of the state of the light in this illuminating source 21 of expression (c), and Figure 70 (b) is the summary section to the illuminating source on the edge direction 21, and Figure 70 (c) is its front view.And in Figure 68 (b), total reflection zone 31 expressions of being represented by chain-dotted line are than the part in the total reflection zone 31 of the more close observation side of the section of this figure.Variation 26 is in the illuminating source 21 of Figure 67, has formed the cut zone 31c of round ditch shape again between the cut zone 31a in total reflection zone 31 and cut zone 31b.According to this variation 26, because can make the light diffusion of sending again, so can further improve the light intensity in front of illuminating source 21 or the uniformity of color by the cut zone 31c of circle ditch shape from light-emitting component 24R, 24G, 24B.

And, the variation 27 of Figure 71 be the surface segmentation with direct outgoing zone 29 be a plurality of cut zone 29a, 29b ..., incline direction or inclination angle at each cut zone 29a, 29b ... and different variation.Because by cut apart direct outgoing zone 29 regulate each cut zone 29a, 29b ... incline direction or the inclination angle also can regulate to each reflector space 28i, 28j, 28k ... the light quantity of distributing is so can further improve the light intensity in front of illuminating source 21 and the uniformity of color.In addition, also can be as the variation 28 of Figure 72, with the total reflection zone 31 on the bottom surface of ditch 25 be divided into a plurality of cut zone 31a, 31b ..., with the surface segmentation in direct outgoing zone 29 be again a plurality of cut zone 29a, 29b ...

Figure 73 is the front view of the illuminating source 21 of expression variation 29.In variation 29, with total reflection zone 30 be divided into checkerboard a plurality of cut zone 30a, 30b ..., and on the surface in total reflection zone 30, be formed with the convex-concave figure.In illuminating source 21 with smooth total reflection zone 30, such as the comparative example of Figure 75 (a) shown in (b), may be from the outer peripheral face leak light of mould portion 22 and cause light loss, and, be arranged in from the light-emitting component farthest to the bight deficiency in light quantity on the angular direction, thereby the easy deepening in bight.With respect to this, in variation 29 as Figure 73, with total reflection zone 30 be divided into a plurality of cut zone 30a, 30b ... situation under, as Figure 74 (a) (b) shown in, each cut zone 30a, 30b by regulating total reflection zone 30 ... slope or inclination angle, can to the 28i of reflector space arbitrarily of reflection part 26,28j, 28k ... lead-in light.Thus, the degree of freedom of design improves, thus can relax each reflector space that arrives reflection part 26 light the light quantity difference and improve the light intensity in front of illuminating source or the uniformity of color.

In variation 29, for example, to avris, be the concavees lens sigmoid by the zone that makes total reflection zone 30 and make the light diffusion, or the zone by making total reflection zone 30 is to the angular direction is tilted to make light to the angular direction is reflected, increase the light quantity of distributing, thereby can prevent the bight deepening on the angular direction to the angular direction.And, effectively utilizing light in order to reduce the loss light that leaks from the outer peripheral face of illuminating source 21, the end regions on the angular direction in total reflection zone 30 is preferably to central side or to edge direction.

And, when being smooth illuminating sources in total reflection zone 30, comparative example shown in Figure 77 is such, light penetrates equably from total reflection zone 30, but because of the optical path length from light-emitting component of the light that penetrates from the end in total reflection zone 30 longer, so a little less than the light intensity, in the easy deepening in the edge of illuminating source.In addition, might light leak and become loss light, thereby cause the utilization ratio of light low from the outer peripheral face of illuminating source.Under the situation of variation 29, in such moment, shown in Figure 76, make cut zone 30a, 30b beyond the peripheral part in the total reflection zone 30 ... oblique to the periphery inclination, thereby can with by cut zone 30a, 30b beyond the peripheral part ... the light of reflection can prevent the peripheral part deepening of illuminating source 21 to the peripheral part transmission.In addition, cut zone 30a, the 30b by making the peripheral part in the total reflection zone 30 ... inside all inclinations are oblique, can reduce the loss light that leaks from the outer peripheral face of illuminating source 21.Therefore, according to this variation 29, it is big that the degree of freedom of design becomes, thereby can improve the uniformity of light intensity or color.

[embodiment 2]

Figure 78 is the front view of the luminescent source array 50 of expression embodiments of the invention 2.This luminescent source array 50 is seamlessly or slightly with a gap with the same plane luminescent source array of having arranged illuminating source 21 of the present invention.This luminescent source array 50 is the backlights as LCD or liquid crystal display television by using, or uses as lighting device, have thin thickness and colorrendering quality good, be difficult to produce unevenness of tint and the high advantage of color uniformity.

In addition, under the situation that the luminescent source array 50 that will adopt illuminating source 21 of the present invention uses as backlight, the homogenizing of realization light intensity and the required front space (and the space between the target face) of the homogenizing of colour mixture degree can be shorter, (for example assembled illuminating source 50 so can make as the device for display of message of backlight, LCD described later) thickness attenuation can realize the slimming of device for display of message.

And in the luminescent source array 50 that adopts this illuminating source 21, even with illuminating source 21 arrays, light-emitting component is not intensive yet, thus the thermal diffusivity raising, thus can simplify cooling mechanism.And the simplification of cooling mechanism helps the slimming of the device for display of message of LCD etc.

[embodiment 3]

Figure 79 is the summary section of structure of the LCD (liquid crystal indicator) 51 of expression embodiments of the invention 3.LCD 51 is to constitute at the back side of liquid crystal panel 52 configuration backlight 53.Liquid crystal panel 52 is general panels, constitutes by stack gradually polarizer 54, liquid crystal cells 55, polarizer 56, polarizer 57 and antireflection film 58 from rear side.

Backlight 53 be a plurality of illuminating sources 21 arrange the luminescent source array 50 that forms former configuration optical diffusion film 61, prismatic lens 62 and brightness improve the backlight of film 63.Illuminating source 21 is seen from the front like that as described later and has been formed square, arranges about 100 to hundreds of this illuminating source 21 with checkerboard, has constituted luminescent source array 50.Optical diffusion film 61 is by making the light diffusion of sending from luminescent source array 50, and in the homogenizing that realizes brightness, also performance evenly mixes the effect of the light of each color of sending from luminescent source array 50.Prismatic lens 62 is the light that makes oblique incidence by refraction or internal reflection and the parts that see through to the vertical direction complications in prismatic lens 62, can improve the front face brightness of backlight 53 thus.

Brightness improves the film that film 63 is the linearly polarized lights in the plane of polarization that linearly polarized light sees through, reflection is perpendicular that makes in certain plane of polarization, has the effect of the utilization ratio of the light that raising sends from luminescent source array 50.That is, brightness raising film 63 is configured to through polarization surface consistent with the plane of polarization of employed polarizer 54 in the liquid crystal panel 52.Therefore, the light that sends from luminescent source array 50, the 54 consistent light transmission brightness of plane of polarization and polarizer improve film 63, incide in the liquid crystal panel 52, but plane of polarization and polarizer 54 vertical light are improved film 63 reflections by brightness and return, and reflected by luminescent source array 50, reenter and be mapped to brightness and improve on the film 63.The light that is improved film 63 reflections by brightness and return reenters being reflected by luminescent source array 50 and is mapped to brightness and improves before the film 63, and the plane of polarization rotation improves film 63 so a part wherein sees through brightness.By repeating such effect, the major part from the light that luminescent source array 50 sends is utilized by liquid crystal panel 52, thereby the brightness of liquid crystal panel 52 improves.

Figure 80 is the summary section of the variation of expression embodiment 3.In the LCD 64 of this variation, omitted the prismatic lens 62 and the brightness that in the LCD 51 of Figure 79, are configured between luminescent source array 50 and the liquid crystal panel 52 and improved film 63.Certainly, also can omit prismatic lens 62 and brightness and improve in the film 63 any one.According to luminescent source array 50 of the present invention, can regulate direction of light or its diffusion of sending accurately, so the prismatic lens that can not need in existing liquid crystal indicator or backlight, uses from illuminating source 21.In addition, when utilizing luminescent source array 50 of the present invention, improve light intensity because can regulate the direction of light sent from illuminating source 21 or its diffusion, in existing liquid crystal indicator so the brightness of can not need using improves film.

Thus,, can omit prismatic lens or brightness and improve film, consequently can realize the slimming of LCD 64, and can realize the reduction of assembly cost according to this variation.And, because do not had prismatic lens or brightness to improve light loss in the film, so can improve the utilization ratio of light.

[embodiment 4]

Figure 81 is the stereogram that expression utilizes the lighting device 72 that the room lighting of luminescent source array of the present invention uses.This lighting device 72 is included luminescent source array 73 of the present invention in the shell 74 in, and shell 74 is provided with supply unit 75.If will be inserted into from the plug 76 that supply unit 75 is drawn the socket of source power supply etc., and connect switch, then the AC power that provides from the socket of source power supply is converted to direct current by supply unit 75, makes luminescent source array 73 luminous by this direct current.Therefore, this lighting device 72 can be used in for example wall-hanging interior illuminator etc.

Claims (19)

1. illuminating source has: the light guide section of the reflection part that light is reflected, the light reflection surface side that is configured in above-mentioned reflection part and to the light-emitting component of above-mentioned light guide section projection light, it is characterized in that,

Above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part, above-mentioned light guide section has light-emitting face, the light that it will send from above-mentioned light-emitting component and penetrate to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection, above-mentioned reflection part has light reflection surface, it will send from above-mentioned light-emitting component, reflected by the light of the light-emitting face reflection of above-mentioned light guide section, and above-mentioned light reflection surface is made of a plurality of reflector spaces of arranging along at least 2 directions.

2. illuminating source has: the light guide section of the reflection part that light is reflected, the light reflection surface side that is configured in above-mentioned reflection part and to the light-emitting component of above-mentioned light guide section projection light, it is characterized in that,

Above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part, above-mentioned light guide section has light-emitting face, the light that it will send from above-mentioned light-emitting component and penetrate to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection, above-mentioned reflection part has light reflection surface, it will send from above-mentioned light-emitting component, reflected by the light of the light-emitting face reflection of above-mentioned light guide section, and above-mentioned light reflection surface is arranged by a plurality of reflector space mosaic shapes and formed.

3. illuminating source as claimed in claim 1 or 2 is characterized in that, above-mentioned reflector space is square, rectangle, hexagon, triangle or fan-shaped.

4. illuminating source as claimed in claim 1 or 2 is characterized in that, between the reflector space of adjacency on all directions that above-mentioned reflector space is arranged, the characteristic quantity that characterizes each reflector space is different.

5. illuminating source as claimed in claim 1 or 2 is characterized in that, between the reflector space of adjacency on the direction between all directions that above-mentioned reflector space is arranged, the characteristic quantity that characterizes each reflector space is different.

6. illuminating source as claimed in claim 4 is characterized in that, above-mentioned characteristic quantity is the displacement of above-mentioned each reflector space on the optical axis direction of above-mentioned reflection part.

7. illuminating source as claimed in claim 4 is characterized in that, above-mentioned each reflector space is a taper seat, and above-mentioned characteristic quantity is the radius of curvature that characterizes taper seat.

8. illuminating source as claimed in claim 4 is characterized in that, above-mentioned each reflector space is a taper seat, and above-mentioned characteristic quantity is the circular cone coefficient that characterizes taper seat.

9. illuminating source as claimed in claim 1 or 2 is characterized in that, has the different a plurality of above-mentioned light-emitting component of illuminant colour.

10. illuminating source as claimed in claim 9 is characterized in that the reflector space of adjacency reflects the light of each light-emitting component, makes the light that sends from mutually different light-emitting component generally perpendicularly penetrate to frontal.

11. illuminating source as claimed in claim 1 or 2 is characterized in that, the surface of above-mentioned light guide section is divided into a plurality of zones, for each zone after cutting apart, changes its surperficial inclination angle or incline direction.

12. a luminescent source array is characterized in that, has arranged a plurality of illuminating sources as claimed in claim 1 or 2.

13. the light path establishing method of an illuminating source, the light guide section of the light reflection surface side that this illuminating source has reflection part that light is reflected, be configured in above-mentioned reflection part and to the light-emitting component of above-mentioned light guide section projection light, this light path establishing method has: the step that above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part; Form light-emitting face at above-mentioned light guide section, make the light that sends from above-mentioned light-emitting component and the step that penetrates to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection; With in above-mentioned reflection part, by a plurality of reflector spaces of arranging along at least 2 directions form to send from above-mentioned light-emitting component, by the light reflection surface that the light of the light-emitting face reflection of above-mentioned light guide section reflects, the step of the catoptrical reflection direction of setting each reflector space respectively and being produced.

14. the light emerging method of an illuminating source, the light guide section of the light reflection surface side that this illuminating source has reflection part that light is reflected, be configured in above-mentioned reflection part and to the light-emitting component of above-mentioned light guide section projection light, it is characterized in that this light emerging method has: the step that above-mentioned light-emitting component is configured in the middle section of above-mentioned reflection part; Form light-emitting face at above-mentioned light guide section, make the light that sends from above-mentioned light-emitting component and the step that penetrates to the outside by the light of the above-mentioned light-emitting component of above-mentioned reflection part reflection; With in above-mentioned reflection part, form light reflection surface by a plurality of reflector spaces of arranging along at least 2 directions to sending from above-mentioned light-emitting component, reflecting by the light of the light-emitting face reflection of above-mentioned light guide section, the catoptrical reflection direction that is produced by setting each reflector space respectively, adjusting is from the exit direction of the light of the light-emitting face outgoing of above-mentioned light guide section and the step of light distribution.

15. a lighting device has: a plurality of illuminating sources as claimed in claim 1 or 2 are arranged luminescent source array that forms and the supply unit of powering to above-mentioned luminescent source array.

16. a backlight is characterized in that, has arranged a plurality of illuminating sources as claimed in claim 1 or 2 in same plane.

17. a liquid crystal indicator has: the luminescent source array that a plurality of illuminating sources arrangements as claimed in claim 1 or 2 form and the display panels of relative configuration with above-mentioned luminescent source array.

18. liquid crystal indicator as claimed in claim 17, it is characterized in that, between above-mentioned luminescent source array and above-mentioned display panels, do not make the optics of the direction of advance of the light that sends from luminescent source array towards the frontal of display panels.

19. liquid crystal indicator as claimed in claim 17 is characterized in that, between above-mentioned luminescent source array and above-mentioned display panels, is not used in the optics of the brightness of the light that raising throws light on to display panels.

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