TWI230237B - Projection light source generated from light emitted diodes - Google Patents

Abstract

This invention uses LED as a primary light source to produce projection light. A first lens system collects the primary light to form parallel light. A second lens system collects the parallel light to form projection light. Reflection mirror can be added to change the direction of light path. Phosphor material can be applied to optical path to emit colorless light with short wavelength LED.

Description

1230237 V. Description of the invention (1) 1. The technical field to which this technology belongs This technology is applicable to domestic or industrial light sources such as lighting light sources, decorative light sources, etc., and projection light sources such as projectors, car lights, etc. . 2. Prior art The prior art is shown in FIG. 1. A conventional projection light bulb has a glass case 10 and a filament 12, and the filament 12 generates heat and light through electric current. This light bulb has low luminous efficiency and high heat generation. This technology uses a light emitting diode as the original light source and a condenser lens to generate a projection light source with high luminous efficiency and low heat generation. 3. Summary of the Invention This technology uses multiple light-emitting diodes as the primary light source, and uses a primary lens such as a condenser lens or a condenser mirror to collect the scattered light of the original light source of the light-emitting diode to produce parallel light. A condenser lens, or a secondary mirror of a condenser mirror, collects and projects the parallel light to generate a projection light source. This technique can replace traditional lighting bulbs or glare projection lamps. Mirrors can be added to turn the light path. Fluorescent substances can be added to the light-guiding material or coated on the surface of the light-guiding material, so as to convert blue light, or ultraviolet light, etc. to emit white light. 4. Implementation

1230237 V. Description of the invention (2) Figure 2. The first embodiment of the technique shows the first embodiment of the projection light source system 2 0 of the technique, and the diagram shows three light-emitting diodes 2 0 1. 2 0 2. 2 0 3 · Placed on the substrate 21, the emitted light is focused after passing through the primary mirror 22, producing parallel light or approximately parallel light sources. The primary mirror 22 can be a single lens or a condenser lens group composed of multiple lenses. The figure uses two lenses as an example. After focusing by the secondary mirror 23, the projection light is generated. The projection light has a light focusing area 24. Figure 3. The second embodiment of this technology shows that the projection light source 200 of this technology can be placed in a glass cover 10 and made into the same shape as a traditional light bulb, which can be used with existing systems. Fig. 4. Embodiment 3 of the technique. The design is similar to the design of Fig. 2, except that a Fresnel lens 23 is used in Fig. 2, and Fig. 4 shows that a conventional lens 231 is also possible. Figure 5. The design shown in Figure 2 in the fourth embodiment of the present technology. Due to the precision of the lens group 2 2 and the lens 23, and the error caused by light deflection, the light focus area is actually an approximately spherical or sugar The circular area 2 4 is not an ideal focus point. In order to obtain a precise and accurate projection light source, one piece has pinholes

1230237 V. Description of the invention (3) 26 The focus filter plate 2 5 can be placed in the focus area 2 4 in order to obtain a precise and accurate projection light source. The size of the pinholes 26 is designed according to the overall needs. Figure 6. Example 5 of this technique The basic principle is the same as before, but a white light translucent plate 2 8 'containing a fluorescent material is added to the design and placed in the optical path. When the original light source is a light-emitting diode with a short wavelength, for example, blue light, blue-violet light, purple light, ultraviolet light, and other diodes are used, the emitted light can excite the fluorescent material and generate white light.

Fig. 7. The sixth embodiment of the technique shows that the use of the condenser lens 27 can collect and reflect light and project it to reduce the volume of the product. The figure shows that the light-emitting diode 2 0 1 is placed on the substrate 2 1 1 and the light-emitting diode 2 0 2 is placed on the substrate 2 1 2. After passing through the lens 2 3 3 once, parallel light is generated and then focused. The mirrors 2 and 7 produce the focused light and cast it. Figure 8. Seventh Embodiment of the Technique

It is shown that the conventional condenser lens 2 7 1 can replace the thin-type condenser lens 2 7 in FIG. 7 and obtain the same effect. Figure 9. Example 8 of this technique In order to obtain a precise and accurate projection light source, a piece of focus has a pinhole 26

Page 8 1230237 V. Description of the invention (4) The filter plate 25 can be placed in the focus area 24 in order to obtain a precise and accurate projection light source. The size of the pin holes 26 can be designed according to the overall needs. Figure 10. Ninth embodiment of the technique

A display tertiary mirror 43 can be added to modify the outgoing light from the projection light source to make it more concentrated. A mirror 37 can also be added to adjust the exit direction of the projection light source. In addition, a fluorescent material (not shown in the figure) can also be coated on the surface of the reflector 37 to make light-emitting diodes with short wavelengths, such as blue, blue-violet, violet, and ultraviolet light. The emitted light can excite the fluorescent material and cause white light to be emitted. Figure 1 1. The tenth embodiment of the present technique shows that the primary mirror can also be a concave mirror 3 2 and a light-emitting diode 2 0 1.2 0 2.2 0 3. It is placed on the substrate 2 1 and the concave mirror 32 focuses and reflects the original light source to produce parallel Light or approximately parallel light sources are transmitted through the substrate 21. The parallel light is focused by the secondary mirror 23 to generate a projection light source. The substrate 21 may exist in the form of a mesh (not shown in the figure) to increase the amount of light passing through. Figure 12 2. The eleventh embodiment of this technique

The display secondary mirror may also be a concave lens 2 3 2, the light emitting diode 20 is disposed on the substrate 21, and the primary mirror 2 3 3 focuses and reflects the original light source to generate parallel light or approximately parallel light sources. The parallel light diffuses through the secondary mirror 2 3 2 to generate a projected light source. The projected light of this design has a virtual focus F.

Page 9 1230237 V. Description of the invention (5) The foregoing description discloses the preferred embodiments and design drawings of the technology, but the preferred embodiments and design drawings are only examples and are not intended to limit the rights of the technology The scope is here. Anyone who implements this technique by means of equal skill or implements the scope of rights covered by the “Scope of Patent Application” described below shall not deviate from the spirit of this technique but the scope of rights of the applicant.

Page 10 1230237 Simple illustration of the diagram 5. Simple illustration of the diagram Figure 1. Prior art diagram 2. This embodiment of the art Fig. 3. This embodiment of the art Fig. 4. This embodiment of the art III. Figure 5. Implementation of this technique Example 4 Figure 6. Example 5 of this technique Figure 7. Example 6 of this technique Figure 8 Example 7 of this technique Figure 9 Example 8 of this technique Figure 10 Figure 9 of Example 9 of this technique Embodiment 10 FIG. 1 2. The eleventh part number table of the embodiment of the technology 1 0 glass (translucent cover) 1 2 filament 2 0 0.3 0 0. projection light source system 2 0 1. 2 0 2. 2 0 3. light emitting 2 Polar body 2 1. 2 1 1. 2 1 2. Substrate 2 2 · 2 3 3 · 3 2 · Lens group (primary mirror) 2 3.2 3 1. 2 3 2. Lens (secondary mirror)

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Claims (1)

1230237 6. Scope of patent application 1. A device for generating a projection light source by using light emitting diodes, comprising: (1) a plurality of light emitting diodes, which provide a primary light source; and (2) a primary mirror, which is placed in the light path to Gather the aforementioned light-emitting diode light sources to produce parallel light or approximately parallel light sources; and (3) a secondary mirror to gather or diverge the aforementioned parallel light to generate a projection light source. 2. The device for generating a projected light source using a light emitting diode as described in item 1 of the scope of the patent application, further comprising: The light-transmitting cover accommodates each of the aforementioned components and constitutes a traditional-shaped light bulb. 3. The device for generating a projected light source using a light emitting diode as described in item 1 of the scope of the patent application, further comprising: a focus filter plate having a through hole, which is arranged in the focusing area of the aforementioned projection light source to form a more precise projection light source. 4. The device for generating a projection light source using a light emitting diode as described in item 1 of the scope of the patent application, further comprising: a condenser lens, which is arranged in the aforementioned light path to turn the aforementioned light to focus so as to reduce the product volume of. Page 13 1230237 VI. The scope of the patent application is patented, please apply for the application of the 5th source light projection production body pole two light hair as described in the item IX included in the package will be changed to the light before the description will be the middle diameter Before the light. When shooting at Fangfang, dimming the entire surface of the mirror, and reversing the profit, please apply for the 6X light source to produce the second pole of the production body as described in 1X. The preface will be described in the middle diameter light in front of the set mirror light. Inverted light, blue light, and blue light produced by the light: The pole refers to the second series of light, and the hair body uses the two of the poles to describe the light emitted by k ^ .x 1 £ J7. Short-term " and other special, please install the external purple purple, _ source light body extremely profitable, please apply for the installation of the 8 source light projection production body pole two light hair as described in item 7 The cover will be covered with cloth before the change. The coating is to shoot or emit the internal light material. The white material is light-guided and replaced by the transposed source Anguang. The long material wave material is short-light. The fluorescent light is cast into the production body. Lee Special Application 9 Page 14 1230237 Page 15