CN1215279C - Multi-Light Source Lighting System - Google Patents

Abstract

A multi-lamp-source lighting system comprises a reflecting surface, a plurality of lamp sources and light condensing devices which are arranged corresponding to the plurality of lamp sources. The reflecting surface is a part of an ellipsoid, and the ellipsoid comprises a first focus and a second focus. The light emitted by the plurality of light sources passes through the first focus and is converged at the second focus through the corresponding light condensing devices, so that the plurality of light sources are converged to output high-brightness light beams at the same point.

Description

Multi-Light Source Lighting System

technical field

The invention relates to a multi-light source lighting system, in particular to a multi-light source lighting system which uses a partial ellipsoid to combine different light sources.

Background technique

FIG. 1 shows an existing dual light source lighting system 100, which is composed of a rectangular prism 102, two light sources 104 and 106, and parabolic reflectors 108 and 110 matching the configuration of the light sources. In Fig. 1, the designed traveling light path is illustrated by solid lines, thereby explaining the operating principle of the system. As shown in Figure 1, the reflective surfaces 108 and 110 are all designed as paraboloids, and the light emitted by the light source 104 will be reflected by the reflective surface 108 to point C of the rectangular prism 102, and then reflected by the rectangular prism 102 to make the light beam The light emitted from the light source 104 is collimated and reflected toward the light emitting direction at point B of the rectangular prism 102 after being reflected once by the reflective surface 108 and secondly reflected by the reflective surface 110 . Similarly, the light path of the light source 106 is similar to the way of traveling, so that the light emitted by the light sources 104 and 106 can be collimated and emitted in a specific direction, so as to achieve the purpose of combining different light sources.

However, this system is designed to achieve the purpose of combining different light sources. For example, when light is emitted upwards from the wick of one light source 104 , it must pass through the wick of another light source 106 again. At this time, due to the manufacturing defect of the glass outer wall of the wick itself, when the light passes through the glass outer wall of the wick, the light path will obviously be deflected, so that the actually advancing light path is shown by the dotted line in Figure 1, and the light passing through the wick of the light source 106 will be The deflection occurs, and the reflection proceeds along the point A of the reflective surface 110 and the point B′ of the rectangular prism, so that the outgoing light is skewed and cannot be collimated along the original ideal design path to the light exiting direction. Therefore, the actual light combination efficiency of the existing dual-light source lighting system is significantly reduced, and it is difficult to control the deflected light emitted through the rectangular prism, which is more likely to become stray light in the system and reduce the performance of the system.

Contents of the invention

Therefore, the object of the present invention is to provide a multi-light source lighting system, which can achieve the effect of combining different light sources efficiently without the aforementioned disadvantages.

According to the multi-light source lighting system of the present invention, it includes a reflective surface, multiple light sources and a concentrating device configured in conjunction with the light sources. The reflective surface is composed of a partial ellipsoid, and the ellipsoid includes a first focal point and a second focal point, and the second focal point is the light output position of the multi-light source lighting system.

According to one embodiment of the present invention, the light concentrating device is a light source reflective surface composed of a partial ellipsoid, and is designed so that the light focus of the light source reflective surface overlaps with the first focus position of the reflective surface, so that each The light emitted by each light source can pass through the first focal point and converge to the second focal point through each of the corresponding light collecting devices.

According to another embodiment of the present invention, the light concentrating device is a combination of a parabolic reflective surface and a lens, wherein the lens is used to converge the parallel light beams reflected by the parabolic reflective surface onto the first focal point of the reflective surface.

The present invention utilizes part of the ellipsoidal surface as the design of the reflective surface. Regardless of the number, type, or distribution of light sources to be synthesized in space, it only needs to be equipped with different concentrating devices to ensure that the light passes through the first reflective surface. focus, so that a good light source combination effect can be obtained at the light output position of the second focus. The invention not only does not have the defect of the prior art that the light path passes through the wick twice, resulting in the deflection of the light output direction, but also makes the design of the combined light source simpler and more flexible.

Description of drawings

FIG. 1 is a schematic diagram of an existing dual light source lighting system.

FIG. 2 is a schematic view showing the structure and operation principle of an embodiment of the multi-light source lighting system according to the present invention.

FIG. 3 is a schematic diagram showing the structure and operation principle of another embodiment of the present invention.

【Description of figure number】

10, 30 Multi-light source lighting system

12, 32 Ellipsoid reflective surface

14, 16, 34, 36 Light source

18, 20, 38, 40 reflective surface

42, 44 Lens

100 Dual light source lighting system

102 rectangular prism

104, 106 Light source

108, 110 reflective surface

P, Q, O, O', S, S' focus

Detailed ways

Preferred embodiments of the present invention will be described below with reference to related drawings.

FIG. 2 is a schematic view showing the structure and operation principle of an embodiment of the multi-light source lighting system 10 according to the present invention. As shown in FIG. 2 , the multi-light source lighting system 10 includes a reflective surface 12 , two light sources 14 and 16 , and light collecting devices 18 and 20 respectively matching the two light sources. In this embodiment, the light sources 14 and 16 are light sources suitable for projection lighting, such as mercury arc lamps and the like. The reflecting surface 12 is a part of an ellipsoid, and the ellipsoid has a first focus O and a second focus O'. Concentrating devices 18 and 20 are arranged corresponding to the light sources 14 and 16 respectively. In this example, the concentrating devices can also be reflective surfaces formed by partial ellipsoidal surfaces.

Referring to the traveling light path illustrated by the solid line in FIG. 2 , the operation principle of the present invention will be described below. First of all, according to the geometric light-gathering characteristics of the ellipse itself, if the light is emitted from one focal point of the ellipse, it will pass through the other focal point of the ellipse after being reflected by the wall of the ellipse. Therefore, in this embodiment, the ellipsoid reflective surface 12 is configured according to the required light emitting position at the beginning. More specifically, as shown in FIG. 2 , the desired light exit position is placed at the second focal point O′ of the ellipsoidal reflective surface 12 . Then, according to the position of the first focal point O, the configuration of the ellipsoidal reflective surfaces 18 and 20 is determined, so that the P point and the O point are the two focal points of the ellipsoidal reflective surface 18, and the Q point and the O point are also mutually reflected. Two foci of face 20.

Therefore, based on the light-gathering characteristics of the aforementioned ellipse itself, when the light sources 14 and 16 are respectively placed at the two points P and Q, the emitted light is all converged by the ellipsoid reflective surfaces 18 and 20 on another focal point O, Now when the light passes through point O, because point O and point O' are the double focus of the ellipsoidal reflective surface 12, it can be ensured that the light is reflected by the ellipsoidal reflective surface 12 into point O', that is, the predetermined light exit position.

Therefore, through the design of the present invention, when the light emitted by different light sources is collected at the light output position to obtain the effect of combining different light sources, it will not be like the aforementioned prior art, where the light passes through the wick twice during the combination process to cause light output. The direction is deflected, resulting in the disadvantage that the light extraction efficiency is significantly reduced.

FIG. 3 is a schematic diagram showing the structure and operation principle of another embodiment of the present invention. As shown in FIG. 3 , the multi-light source lighting system 30 is also provided with a reflective surface 32 formed by a part of an ellipsoid to form a set of ellipse focal points S and S' in space. The light concentrating device of this embodiment adopts a set of reflective surfaces and lenses composed of paraboloids. Firstly, the light rays emitted by the lamp sources 34 and 36 will be reflected by the parabolic reflective surfaces 38 and 40 into parallel beams, and then be focused to the focal point S by the lenses 42 and 44 respectively. The light emitted by both light sources 34 and 36 will be reflected by the ellipsoid reflective surface 32 to the preset light emitting position, which is another focal point S′, so as to obtain the effect of combining different light sources efficiently.

In summary, through the design of the present invention using partial ellipsoidal surfaces as the reflective surfaces 12, 32, no matter what the number, type or distribution of light sources to be synthesized in space, it only needs to be exemplified as in the aforementioned different embodiments In practice, different concentrating devices are used to ensure that the light passes through the first focal point of the ellipsoidal reflective surfaces 12 and 32, so that a good light source combination effect can be obtained at the light output position of the second focal point. The present invention not only does not have the defect of the prior art that the light path passes through the wick twice, resulting in the deflection of the light output direction, but also makes the combination design of the light source as a projection light source easier and more flexible.

The foregoing descriptions are illustrative only, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (3)

1. the system of lamp source lighting more than a kind is characterized in that, comprises:

One first reflecting surface that the part ellipsoid constitutes, described ellipsoid comprises one first focus and one second focus;

A plurality of lamps source; And

A plurality of beam condensing units correspond respectively to each the lamp source configuration in described a plurality of lamps source; Wherein

The light that described a plurality of lamps source is sent, via described each corresponding beam condensing unit by described first focus and converge to described second focus.

2. many lamps source lighting as claimed in claim 1 system is characterized in that: described beam condensing unit is one second reflecting surface that the part ellipsoid constitutes, and described first focal position of a focus of described second reflecting surface and described first reflecting surface is overlapping.

3. many lamps source lighting as claimed in claim 1 system, it is characterized in that: described beam condensing unit is the combination of a parabolic reflector face and lens, and described lens will be in order to will converge to described first focus in the collimated light beam that described parabolic reflector face reflects.

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