CN101008477A - Lighting system - Google Patents

Abstract

An illumination system adapted to provide a parallel illumination beam. The lighting system comprises two first lamps, wherein each first lamp comprises a first lampshade, a first lamp wick and a first reflecting element. The first lampshade is provided with a first light-emitting section, and the first reflecting element is connected with the first lampshade and shields part of the first light-emitting section. The first lamp wick is suitable for providing first emitted light, the first lampshade and the first reflecting element are suitable for enabling the first emitted light to form first parallel light beams, and the first parallel light beams are output from the unmasked part of the first light-emitting section. The lighting system also comprises at least one second reflecting element arranged between the two lamps, wherein the second reflecting element is arranged between the two lamps and positioned on the light path of at least part of the first parallel light beams, so that the first parallel light beams provided by the first lamps are combined into parallel lighting light beams. Because the reflecting element and/or the shading element are adopted to absorb the energy of partial ultraviolet light and infrared light in the lampshade, the damage probability of the lamp wick due to overheating can be reduced.

Description

Lighting system

technical field

The invention relates to an illumination system, in particular to an illumination system with multiple lamps.

Background technique

Please refer to FIG. 1 , the existing dual-lamp lighting system 100 includes a first lamp 110 , a second lamp 120 , and a reflector 130 . Wherein, the first lamp 110 is opposite to the second lamp 120 , and the reflector 130 is disposed between the first lamp 110 and the second lamp 120 . The reflector 130 has two reflecting surfaces 132 , 134 , and the included angles between them and the axis 50 are respectively 45 degrees.

As noted above, the first and second light fixtures 110, 120 include wicks 112, 122 and parabolic shades 114, 124, respectively. The wicks 112, 122 are adapted to provide divergent light, they are located on the same axis 50, and the parabolic lampshades 114, 124 are used to form the divergent light into parallel beams 112a, 122a, and the optical axes of the two parallel beams 112a, 122a are parallel to the axis 50 . In addition, part of the parallel light beams 112 a and 122 a are reflected by the reflective surfaces 132 and 134 of the reflector 130 to form a composite light beam 140 . Another part of the parallel light beams 112 a , 122 a not reflected by the reflector 130 is reflected to the reflector 130 through the parabolic lampshades 124 , 114 , and then reflected by the reflecting surfaces 134 , 132 to form a combined light beam 140 .

In the dual-lamp lighting system 100, since the parallel light beams 112a, 122a directly illuminate the second and first lamps 120, 110 respectively and repeatedly pass through the wicks 112, 122, the wicks 112, 122 are easily damaged due to overheating. In addition, the parallel light beams 112a, 122a formed by the parabolic lampshades 114, 124 will gradually diverge, and because the parallel light beams 112a, 122a have a long optical path, the light beam collection efficiency is poor, and thus the dual-lamp lighting system 100 is reduced. The intensity of the provided illumination beam. In addition, the double-lamp lighting system 100 uses the first lamp 110 and the second lamp 120 to be arranged oppositely, and the reflector 130 is arranged between the first lamp 110 and the second lamp 120 to combine the light beams, so a larger space is required for With such a structure, the volume of the projection device is relatively large. Under the current trend of short, small, light and thin electronic products, the dual-lamp lighting system 100 with this structure obviously cannot meet the current design requirements.

Contents of the invention

It is an object of the present invention to provide a lighting system which reduces the chances of lamp failures.

Another object of the present invention is to provide an illumination system that can provide a parallel illumination beam with high intensity.

The lighting system of the invention is adapted to provide parallel lighting beams. The lighting system includes two first lamps, and each first lamp includes a first lampshade, a first wick and a first reflection element. Wherein, the first lampshade has a first light exit section, and the first reflective element is connected with the first lampshade and partially shields the first light exit section. The first wick is adapted to provide the first divergent light, and the first lampshade and the first reflective element are adapted to form the first divergent light into a first parallel beam, and the first parallel beam is output from the unshielded part of the first light exit section. In addition, the lighting system also includes at least one second reflective element, which is arranged between the two lamps and is located on the light path of at least part of the first parallel beams, so that the first light provided by each first lamp The parallel beams are combined into a parallel illumination beam. For example, the lighting system further includes at least one second lamp and at least one third reflective element. Wherein, the second lamp is arranged at least between one of the first lamps and the second reflective element. The second lamp includes a second lampshade and a second wick, the second lampshade has a second light emitting section, and the second lampwick is arranged in the second lampshade. The second wick is adapted to provide the second divergent light, and the second lampshade is adapted to form the second divergent light into a second parallel beam. In addition, the third reflective element is arranged in front of the second light emitting section of the second lampshade, and part of the second parallel beam is reflected into one of the first lampshades through the third reflective element, and another part of the second parallel beam is transmitted to the second lampshade. reflective element. In addition, part of the first parallel light beam is reflected to the second reflective element through the third reflective element and the second lampshade.

The invention also provides a lighting system adapted to provide parallel lighting beams. The lighting system includes two lamps and a reflection element arranged between the two lamps. Wherein, each lamp includes a lampshade, a wick and a shading element. The lampshade has a light emitting section, the wick is arranged in the lampshade, and the shading element covers part of the wick. The wick is suitable for providing divergent light, and the lampshade is suitable for making the divergent light form a parallel beam, and the parallel beam is output from a part of the light output section. In addition, the reflection element is located in front of the light emitting section of one of the lamps, so that the parallel light beams provided by each lamp are merged into parallel illumination beams.

Because the present invention adopts reflective elements and/or shading elements to absorb part of the energy of ultraviolet light and infrared light in the lampshade, it can reduce the possibility of damage to the wick due to overheating. In addition, since the optical path of the light beam is short and less likely to diverge, the collection efficiency of the light beam can be improved, thereby increasing the intensity of the parallel illumination light beam provided by the illumination system.

Description of drawings

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings.

Fig. 1 is the structural representation of existing double-lamp lighting system;

Fig. 2 is a schematic structural diagram of the lighting system according to the first embodiment of the present invention;

3 is a schematic structural diagram of another lighting system according to the first embodiment of the present invention;

4A and 4B are structural schematic diagrams of two lighting systems according to the first embodiment of the present invention;

Fig. 5 is a schematic structural diagram of yet another lighting system according to the first embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a lighting system according to a second embodiment of the present invention.

Explanation of reference signs

50 axis

100 double lamp lighting system

110, 210a, 210b The first light fixture

112, 122, 214' wick

112a, 122a, 218’ Parallel Beam

114, 124 Parabolic lampshade

120, 250, 250’ Second light fixture

130 reflector

132, 134 Reflective surface

140 Synthetic Beam

200, 200’, 200a, 200a’, 200b, 200c lighting system

210c, 210d Lamps

212 The first lampshade

212’ lampshade

212a First light exit section

212a’ Light cross-section

214 The first wick

214’ wick

216 First reflection element

217 Shading element

218 The first parallel beam

220, 220' Parallel lighting beam

230 Light collecting element

232 lens

234 light integrating column

240 Second reflective element

240' reflective element

252 Second lampshade

252a Second light exit section

254 Second wick

256 Second parallel beam

260, 260' third reflective element

Detailed ways

first embodiment

Referring to FIG. 2, the lighting system 200 of this embodiment includes two first lamps 210a and 210b and a second reflective element 240, wherein the second reflective element 240 is arranged between the first lamps 210a and 210b, and each The first lamps 210 a and 210 b include a first lampshade 212 , a first wick 214 and a first reflective element 216 , and the axes of the first wicks 214 of the two first lamps 210 a and 210 b are arranged to be perpendicular to each other. The first lampshade 212 has a first light emitting section 212a, and the first reflective element 216 is connected to the first lampshade 212 and partially shields the first light emitting section 212a. The first wick 214 is adapted to provide the first divergent light, and the first lampshade 212 and the first reflective element 216 are adapted to form the first divergent light into a first parallel beam 218, and the first parallel beam 218 has never been illuminated by the first reflective element. The first light exit section 212a shielded by 216 is output. In addition, the second reflective element 270 is arranged in front of the light emitting section 212a of one of the first lamps (such as the first lamp 210a), so as to reflect the first parallel light beam 218 provided by the first lamp 210a, and make it different from the other first lamp 210a. The first parallel light beam 218 provided by a lamp 210 b is combined into a parallel illumination light beam 220 .

For example, the first reflective element 216 covers half of the first light exit section 212a. These first reflection elements 216 are, for example, cold mirrors (Cold Mirror), which can eliminate the energy of ultraviolet light and infrared light in part of the divergent light, so as to reduce the temperature inside the first lampshade 212. In this way, the possibility of damage to the first wick 214 due to overheating can be reduced. In addition, in this embodiment, the light collecting element 230 can be disposed on the optical path of the parallel illuminating beam 220 , so that the parallel illuminating beam 220 becomes a focused illuminating beam. The light collecting element 230 is, for example, a lens 232 , a light integrating rod 234 or a combination thereof.

The second reflective element 240 is, for example, a mirror. The mirror can be a cold mirror, which can be used to eliminate the energy of the ultraviolet light and infrared light in the first parallel light beam 218 to reduce the temperature of the entire lighting system 200 . In addition, the second reflective element 240 can be a dichroic mirror, which can be used to adjust the color temperature of the first parallel light beam 218 . In addition, a prism (Prism) can also be used as the second reflective element 240 .

Since the arrangement of the first lamps 210a and 210b is relatively close, the structure of the entire lighting system 200 is small, so the volume of the projection device using the lighting system 200 can be reduced to meet the requirements of short, small, light and thin electronic products today. trend. In addition, due to the smaller structure of the entire lighting system 200, the optical path of the first parallel light beam 218 is shorter and less likely to diverge, so the collection efficiency of the first parallel light beam 218 can be improved to form a parallel illumination light beam 220 with higher intensity. .

2 and 3, the lighting system 200' of this embodiment is similar to the lighting system 200 described above, the difference is that the lighting system 200 only has one second reflective element 240, while the lighting system 200' has two second The reflection element 240, and the axes of the first wicks 214 of the first lamps 210a, 210b are located on the same axis. More specifically, the two second reflective elements 240 are disposed between the first lamps 210a and 210b, and are respectively located in front of the first light emitting sections 212a of the first lamps 210a and 210b. The second reflective element 240 is suitable for reflecting the first parallel light beam 218 provided by the first lamps 210a and 210b, and the first parallel light beam 218 provided by the first lamps 210a and 210b merges after being reflected by the second reflective element 240 into a parallel illumination beam 220.

Since the first parallel light beams 218 provided by the first lamps 210a and 210b are all reflected by the second reflective element 240, the second reflective element 240 can use a cold mirror to eliminate the interference of ultraviolet light and infrared light of each first parallel light beam 218. energy to make the temperature of the lighting system 200' lower, or use a dichroic mirror to adjust the color temperature of the first parallel light beam 218 provided by the first lamps 210a, 210b.

Please refer to FIG. 4A and FIG. 4B, compared with lighting systems 200 (as shown in FIG. 2) and 200' (as shown in FIG. The third reflective element 260 . Wherein, the second lamp 250 is disposed between one of the first lamps (such as the first lamp 210 a ) and the second reflective element 240 . The second lamp 250 includes a second lampshade 252 and a second wick 254 , the second lampshade 252 has a second light emitting section 252 a , and the second wick 254 is disposed in the second lampshade 252 . The second wick 254 is adapted to provide the second divergent light, and the second lampshade 254 is adapted to form the second divergent light into a second parallel beam 256 . In addition, the third reflective element 260 is disposed in front of the second light emitting section 252 a of the second lampshade 256 .

In this embodiment, part of the second parallel light beam 256 is transmitted to the second reflective element 240, while another part of the second parallel light beam 256 is reflected into the first lamp 210a by the third reflective element 260, and passes through the first lamp 210a. The first lampshade 212 and the first reflective element 216 re-reflect. In addition, the first parallel light beam 218 provided by the first lamp 210a and the part of the second parallel light beam 256 re-reflected by the first lampshade 212 and the first reflective element 216 of the first lamp 210a pass through the third reflective element 260 and the second lampshade. 252 is reflected to the second reflective element 240 . Afterwards, the second reflective element 240 reflects the second parallel light beams 256 and the first parallel light beams 218 to combine with the first parallel light beams 218 provided by the first lamp 210b to form a parallel illumination light beam 220 .

Since the lighting systems 200a, 200a' have three lamps (ie, two first lamps 210a, 210b and one second lamp 250), the intensity of the parallel lighting beam 220 provided by the lighting systems 200a, 200a' is relatively high.

Referring to FIG. 5, the lighting system 200b of this embodiment is similar to the lighting system 200a' shown in FIG. 4B, except that the lighting system 200b further includes another second lamp 250' and another third reflective element 260'. Wherein, the second lamp 250' is arranged between the first lamp 210b and the second reflective element 240 located at the bottom of FIG. . In the lighting system 200b, since the transmission paths of the first parallel beam 218 and the second parallel beam 256 provided by the first lamp 210b and the second lamp 250' are different from the first lamp 210a and the second lamp 250 provided by the above-mentioned The transmission paths of the first parallel light beam 218 and the second parallel light beam 256 are similar and will not be repeated here.

Since the lighting system 200b' of this embodiment has four lamps (i.e. two first lamps 210a, 210b and two second lamps 250, 250'), the intensity of the parallel lighting beam 220 can be further increased.

second embodiment

Please refer to FIG. 6 , the lighting system 200c of the present embodiment is similar to the lighting system 200 of the first embodiment, so the same reference numerals will be used to denote the same components in FIG. 6 . The lighting system 200c of this embodiment includes two lamps 210c, 210d and a reflective element 240' disposed between the two lamps 210c, 210d. Wherein, each lamp 210c, 210d includes a lampshade 212', a wick 214' and a shading element 217. The lampshade 212' has a light emitting section 212a', and the wick 214' is disposed in the lampshade 212', and the light shielding element 217 covers part of the wick 214'. The wick 214' is adapted to provide divergent light, and the lampshade 212' is adapted to form the divergent light into a parallel beam 218', and the parallel beam 218' is output from a part of the light output section 212a'. In addition, the reflective element 240' is located in front of the light emitting section 212a' of one of the lamps (such as the lamp 210c), and is located on the light path of the parallel beam 218' provided by the first lamp 210c. The parallel light beam 218' provided by the first lamp 210c is reflected by the reflective element 240' and combined with the parallel light beam 218' provided by the first lamp 210d to form a parallel illumination beam 220'. The light-shielding element 217 is, for example, a coating, and the material of the coating is, for example, a material that can absorb ultraviolet light and infrared light energy, so as to prevent the wick 214 from being damaged due to overheating. In addition, in this embodiment, a light collecting element 230 may be disposed on the light path of the parallel illuminating beam 220' to gather the parallel illuminating beam 220' into a focused illuminating beam. The light collecting element 230 is, for example, a lens 232 , a light integrating rod 234 or a combination thereof. The advantages of the lighting system 200c in this embodiment are similar to those of the lighting system 200 (as shown in FIG. 2 ) in the first embodiment, and will not be repeated here.

To sum up, the lighting system of the present invention has at least the following advantages.

1. The present invention uses reflective elements and/or shading elements to eliminate part of the ultraviolet light and infrared light in the lampshade, so it can reduce the probability of the wick being damaged due to overheating.

2. Due to the smaller structure of the lighting system, the optical path of the light beam is shorter and less likely to diverge, so the collection efficiency of the light beam can be improved to increase the intensity of the parallel lighting beam provided by the lighting system. Moreover, the structure of the lighting system is small, which can also reduce the overall volume of the projection device.

3. In the lighting system of the present invention, the number of lamps can be increased according to the demand, so as to increase the intensity of the parallel lighting beam.

Although the present invention has been described above through preferred embodiments, this is not a limitation of the present invention. Any person skilled in the art can make many changes and modifications without departing from the concept and scope of the present invention. Therefore, the present invention The scope of protection should be determined by the scope of protection required by the appended claims.

Claims (15)

1. illuminator that is suitable for providing parallel illuminating bundle, this illuminator comprises two first light fixtures, each first light fixture comprises:

One first lampshade, it has one first and goes out optical cross-section;

One first wick, it is configured in described first lampshade, and this first wick is suitable for providing first diverging light;

One first reflecting element, it is connected with described first lampshade, and shaded portions described first goes out optical cross-section, described first lampshade and described first reflecting element are suitable for making described first diverging light to form first collimated light beam, and this first collimated light beam is from described first not gone out optical cross-section output by what described first reflecting element covered; And

At least one second reflecting element, it is configured between described first light fixture, and is positioned on the light path of described first collimated light beam of at least a portion, so that described first collimated light beam is merged into described parallel illuminating bundle.

2. illuminator as claimed in claim 1, wherein, it is vertical mutually that first wick of described first light fixture is arranged to its axis.

3. illuminator as claimed in claim 1 wherein, is arranged to its axis with first wick of described first light fixture and is positioned on the same axis, and described second reflecting element is set at before described first of described first light fixture goes out optical cross-section.

4. illuminator as claimed in claim 1, wherein, described second reflecting element comprises a mirror or a prism.

5. illuminator as claimed in claim 4, wherein, described mirror comprises a cold mirror or a dichronic mirror.

6. illuminator as claimed in claim 1 wherein, also comprises at least one second light fixture, and it is configured between one of described first light fixture and described second reflecting element at least, and this second light fixture comprises:

One second lampshade, it has one second and goes out optical cross-section;

One second wick, it is configured in described second lampshade, and this second wick is suitable for providing second diverging light, and described second lampshade is suitable for making described second diverging light to form second collimated light beam; And

At least one the 3rd reflecting element, before it is configured in described second of described second lampshade and goes out optical cross-section, wherein described second collimated light beam of part reflexes in one of described first lampshade by described the 3rd reflecting element, described second collimated light beam of another part is passed to described second reflecting element, and described first collimated light beam of part reflexes to described second reflecting element by described the 3rd reflecting element and described second lampshade.

7. illuminator as claimed in claim 1 wherein, also comprises a light collecting element, and it is configured on the light path of described parallel illuminating bundle.

8. illuminator as claimed in claim 7, wherein, described light collecting element comprises lens, an optical integration pillar or above-mentioned combination.

9. illuminator that is suitable for providing parallel illuminating bundle, this illuminator comprises two light fixtures, each light fixture comprises:

One wick, it is suitable for providing diverging light;

One shading element, the described wick of its covered section;

One lampshade, it has one and goes out optical cross-section, and described wick is configured in this lampshade, and the described diverging light that this lampshade is suitable for making described wick to provide forms collimated light beam, and this collimated light beam goes out optical cross-section output from part is described; And

One reflecting element, it is configured between the described light fixture, and be positioned at a light fixture wherein described go out optical cross-section before so that the described collimated light beam that each light fixture provided is merged into described parallel illuminating bundle.

10. illuminator as claimed in claim 9, wherein, described reflecting element comprises a mirror or a prism.

11. illuminator as claimed in claim 10, wherein, described mirror comprises a cold mirror or a dichronic mirror.

12. illuminator as claimed in claim 9, wherein, each described shading element comprises a coating.

13. illuminator as claimed in claim 9 wherein, also comprises a light collecting element, it is configured on the light path of described parallel illuminating bundle.

14. illuminator as claimed in claim 13, wherein, described light collecting element comprises lens, an optical integration pillar or above-mentioned combination.

15. illuminator as claimed in claim 9, wherein, the axis that described light fixture is configured to its wick is vertical mutually.

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