TW594369B - Dural lamp illumination system with small etendue - Google Patents

Abstract

An illumination system is provided in the present invention. The system includes a set of confocal condensers, a first light source system and a second light source system. The condensers include a first condenser and a second condenser. The first light source system is deposited corresponding to the first condenser, and includes a first lamp, a first paraboloid reflector and a first mirror. The first lamp is deposited at the focus of the first paraboloid reflector, and the first mirror is deposited between the first condenser and the first paraboloid reflector. The second light source system is deposited corresponding to the second condenser and is adjacent to the first light source system. The second light source system includes a second lamp, a second paraboloid reflector and a second mirror. The second lamp is deposited at the focus of the second paraboloid reflector, and the second mirror is deposited between the second condenser and the second paraboloid reflector.

Description

594369 V. Description of the invention 0) Technical field to which the invention belongs The present invention is to provide a lighting system, particularly a lighting system using dual light bulbs as a light source and the optical limit value (e t e n d u e) of a small synthetic light beam.

Previous technologies In the current market, projectors can be divided into four categories depending on the display technology used. CRT (Cathode Ray Tube) projectors, LCD (Liquid Crystal Display) projectors, DLp (Digital

Light Processing) projector and LC0s (Liquid Crystal on SU iCON) projector. Among them, CRT projectors have been gradually eliminated due to some of their own technology; LCD projectors have the characteristics of high-view bright i: = small two, rich color, etc., and are currently more popular reflection principles for projection. With higher light, the advantages are: the number of uses: the advantages of optical imaging principles, advantages, and portability. Stability of supplies, light use 5 LC0S projector, although it has become a mainstream product;

However, because of its high resolution, the production factor == production: is still not ideal: a design with development potential. Looking at the digital projection technology 4 projector products, it is still the focus of pushing ") in recent exhibitions, and DLP projectors are jealous, and portable (Ultra-Portable projectors have become commercially available, short Characteristics, so DLP products. Intermediate projector market 明 明星 白 彳 594369

A light such as a lamp or a xenon lamp emits light, collects the light to the panel to reflect or transmit the image of the panel to project the image, and then passes through the beam splitting and combining light system, and finally projects the image to the screen for display. The key technology of the DLP projector is to use a semiconductor device D0 (Digital Micromiirror Device) controlled by two-bit pulse modulation as a reflecting device and to project an image to the screen. Among them, DMD can control the digital optical switch very fast and reflectively, and it can also control the light source accurately. Each DMD wafer contains thousands of tiny square reflective lenses (micromirrors). After the light emitted by the light source (1 ight) is projected onto the surface of D0 alternately, all the micromirrors on the DMD chip are determined by the number of each color (red or green or monitor) in the corresponding graphics element. The number of times the colored light is in the on position, which determines the amount of light that is projected onto the screen through the projection lens after reflection. Since D M D has the characteristics of reflectivity and radon fill ratio, it can produce high optical efficiency ’. Therefore, DLP projectors are very suitable for applications requiring high brightness and high resolution. The better heat dissipation also allows DLp projectors to use high-wattage light sources without reducing the life of the DMD. At the same time, the all-digital design of DLP also provides a more accurate and stable reproduced image. At present, DLP projector products have appeared 0.8 kg products, but small changes in products have their limits in market application requirements, and the significance of further miniaturization | is not too great, the technology competition will shift from thinness to shortness Improvements in display technology. For example, projectors that provide high color saturation, high brightness, high resolution, and fast response speed are the mainstream pursued in the future. ’In geometry, there is a geometric limit value that describes light emission or light reception, called etendue, and e tendue is the cross-sectional area of the beam and the beam divergence.

Page 8 594369 V. Description of the invention (3) The numerical value related to the sine function of the angle is defined as follows ^ · 61endue Α: beam cross-section area Q: beam divergence angle

Although DLP projectors are the ones with better efficiency of light energy utilization in various types of projectors, various manufacturers are still committed to improving their efficiency in the use of light energy to ensure that they can continue to be in the leading position in the commercial projector market.

In the design of optical engines, many commercial companies have changed to adopt new lighting systems with dual light bulbs to replace traditional lighting systems with a single light source in order to improve the efficiency of light energy utilization. However, the et endue value of the DLp projector depends on the specifications of the DMD used. The etendue value of the beam directly synthesized by the dual-bulb lighting system is more than the required value of DMD. Therefore, if we want to really improve the utilization efficiency of solar energy ’, it is of great industrial value to provide a two-light source lighting system that can moderately reduce the etendue value of the synthetic beam to meet the requirements of DMD. Due to the lack of know-how, the applicant has carefully studied and researched and persevered, and finally developed the "high-efficiency dual-bulb lighting system" in this case. Summary of the Invention

Page 9 594369 V. Description of the invention (4) The owner of the case Small product conforming to this case Another, fast response The confocal condenser lens The purpose of the case is to provide a projector design with a high-efficiency energy efficiency and lighting system. One purpose is to provide an optical device with high brightness, high resolution speed, etc. The purpose is to consist of a group; one is opposite to the first condenser lens and one is adjacent to the source system of the first light second light source system And with that. Among them the front engine. In order to provide a lighting system, which includes a first condenser lens and a second second condenser-second light source, the light source system includes: a light lens system and the first light source bulb; Two paraboloids are placed on the root mirror, the root surface is reversed, and the root of a light bulb is focused through the first parabolic surface. The reflection is placed on this surface, and the front reflection is the second. The mirror is a plane mirror according to the above-mentioned illumination and the second mirror described by the first parabolic parabolic parabolic parabola of the above-mentioned mirror and an object-surface reflecting object-plane reflection. The conception, its non-parallel design conception, reflects a conception, its mirror and the ~ face mirror, the face mirror light source system, the focus mirror of the second mirror and the first and the second ~. The first to the first type of anti-the first to the first focal point and the envelope mirror, and the dioptric reflection parabolic lens system is opposite to the system including a first lamp plane mirror, where the first point 'and the first A Zhuo-condensing lens contains a second light bulb, wherein the second reading second reflecting surface is first between the lenses. Between the mirror and the second reflecting surface. The first and second bulbs are set with mirrors and reflecting surfaces. The acoustic reflector and the second parabolic sound reflection. The mirror will enter the reflected light directly due to the incident light and a second type of reflected light.

594369 V. Description of the invention (5) According to the above concept, wherein the first type of reflected light is reflected to the first reflective mirror, and the first type of reflected light is reflected by the first reflective mirror. According to the above concept, the second parabolic mirror will reflect a third type of reflected light and a fourth type of reflected light due to being illuminated by the first bulb. According to the above concept, the third type of reflected light directly enters the second condenser lens. According to the above-mentioned concept, the fourth type of reflected light is reflected into the second reflective surface mirror, and becomes the third type of reflected light by the reflection of the second reflective surface mirror. According to the above concept, the inside of the first condenser lens is formed into a first oblique angle. According to the above concept, the inside of the second condenser lens is formed into a second oblique angle. According to the above concept, the first condenser lens and the second condenser lens are connected to the second oblique angle by the first oblique angle. Another object of the present invention is to provide another lighting system, including: a confocal condenser lens group, including a first condenser lens and a second condenser lens, and a first condenser lens disposed opposite to the first condenser lens Light source system to

And a second light source system disposed adjacent to the first light source system and opposite to the second condenser lens. The first light source system includes a first light bulb, a first reflecting mirror, and a first parabolic reflector, and the third parabolic reflecting mirror will reflect a first type of reflection due to the first light bulb. Light and a second type of reflected light, and the first bulb is disposed on the first paraboloid

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= Mirror = focal point; the first reflecting mirror is located between the first parabolic reflection $ and the first condensing lens and is disposed in a forward direction with the second reflected light. The aforementioned two light source system includes a second bulb, a second reflecting mirror, and a second parabolic reflector, wherein the second parabolic reflector can be illuminated by the first bulb and reflects a third type of reflected light. And a fourth type of reflected light ', wherein the second light bulb is disposed at the focal point of the second parabolic mirror and the second reflecting mirror is located between the second parabolic mirror and the second condenser lens and is connected to the first Four types of reflected light are set forward. According to the above concept, wherein the first type of reflected light directly enters the first condenser lens. According to the above concept, wherein the third type of reflected light directly enters the condenser lens. ^ Brother — According to the above concept, the inside of the first condenser lens is formed with an oblique angle. … Brother According to the above idea, the inside of the second condenser lens is shaped into two oblique angles. According to the above concept, the first condenser lens and the second condenser lens are connected to the second oblique angle by the first oblique angle. Another object of this case is to provide an optical engine including: · — Focusing lens group, which includes a first condenser lens and a second condenser lens, a dual light source illumination system arranged opposite to the focusing lens group, and a light homogenizing duct. The dual light source illumination The system includes a t-th bulb, a first parabolic reflector, a first reflecting mirror, a second bulb, a second parabolic reflecting mirror, and a second reflecting mirror, wherein the first bulb and the

594369 V. Description of the invention (7) The focal points of the reflectors of the second light bulb are respectively set on the side and the side of the second parabolic homogenizing duct, which can be used to transmit the beam and pass through the second lens according to the above. A surface reflecting mirror may be disposed at the first position, and the first parabolic surface reflecting mirror and the dual light source are transmitted through the first condensing lens, wherein the concept includes a first type of reflected light due to the first reflected light The first and the first light are respectively the first lens and the first oblique light. Four types of reflections are directly incident on the first data and the reflection is reflected by one of the parabolic mirror and the second parabolic-reflector mirror. And the second reflecting mirror is between the reflecting mirror and the first condenser lens and between the second condenser lens. The light homogenizing system is respectively located in the focusing lens group and is focused by one of the first focusing light and one of the second focusing light. The first reflecting mirror and the second reflecting surface are irradiated with the first parabolic mirror and the second throwing first bulb and the second bulb to produce two types of reflected light and a third type of reflected light. The first type of reflection Light and the third type of reflected light lens and the second condenser lens. The first reflecting surface mirror, the second reflecting surface light, and the fourth type of reflected light. Conception, wherein the second type of reflection conception, wherein the inside of the first condenser lens is shaped as a second oblique according to the above-mentioned mirror system, borrowing the first according to the above-mentioned angle. According to the above concept, the inner side of the second condensing lens is formed into an angle of 0. The concept, wherein the oblique angle and the first concept, wherein the first condensing lens and the second condensing lens are closely connected. The first reflecting mirror and the second reflecting surface

Page 13 594369 V. Description of the invention (8) The mirror system respectively shields the first condenser lens and the second condenser lens. Another object of this case is to provide another optical engine, including: a focusing lens group, each of which includes at least one condenser lens, wherein the condenser lenses are confocal and are respectively opposite to the parabolic reflector; at least one light source The lighting system is arranged opposite to the focusing lens group, and each has a light bulb, a parabolic reflector and a reflecting mirror, wherein the bulb is arranged at the focal point of the parabolic reflector, and the reflecting mirror is arranged Between the parabolic reflector and the focusing lens group, and a light homogenizing duct, the light source illumination system and the light source illumination system are located on different sides of the focusing lens group, respectively, for transmitting at least one focused light beam. According to the above concept, the reflecting mirror is a movable plane mirror. Implementation mode Please refer to the first figure, which is a schematic diagram of a dual light source system according to a preferred embodiment of the present invention. As shown in the first figure, the dual light source system 1 includes a first light bulb, a second light bulb 12, a first parabolic mirror 13, a second parabolic mirror 1, 4, and a first flat mirror 15

17. A second condenser lens 18 and a light homogenizing duct 19. Among them, the first lamp 11 is located at the focal point of the first parabolic mirror 丨 3, and the second light bulb 丨 2 is located at the focal point of the parabolic mirror 14, and the closely-focusing and confocal condenser lens 1J and the second condenser lens丨 8, which can effectively achieve the effect of combining light and significantly improve the light intensity provided by the dual light source system 丨. In order to avoid the condensing of one condensing lens 17 and the second condensing lens 18 when they are bonded together, a light leakage phenomenon is caused. The present invention conceals the first condensing lens 17 and the second condensing lens.

Page 14 594369 V. Description of the invention (9) 18 has a first oblique angle 171 and a second oblique angle 181 respectively. Through the aforementioned oblique angle design, the dual light source system 1 can effectively reduce unnecessary light energy Attrition. Please refer to the second figure 'for a schematic view of the reflected light path of the preferred embodiment of the present invention. As shown in the second figure, when the first parabolic reflector 13 can reflect the first type of reflected light 1 3 1, 1 3 3 and the second type of reflected light 132 due to being illuminated by the first light bulb 11, the second type The reflected light 1 32 is reflected by the first plane mirror 15 into a reflected light 151, and the reflected light 151 can be reflected by the first parabolic mirror 13 into the first type of reflected light 134 and enters the first condenser lens 17 . On the other hand, when the second parabolic mirror 14 can reflect the third type of reflected light 1 41, 1 4 3 and the fourth type of reflected light 142 due to being illuminated by the second light bulb 12, the fourth type of reflected light 142 passes through The second plane mirror 16 reflects a reflected light 161, and the reflected light 161 can be reflected by the second parabolic mirror 14 into a third type of reflected light 144 and enters the second condenser lens 18. Please refer to the second diagram and the third diagram, where the third diagram is a schematic diagram of a reflected light path according to another preferred embodiment of the present invention. As shown in the second and third figures, turning the first plane mirror 15 can change the path of the reflected light 151 and the reflected light 134 together to reflect the first type of reflected light 151 ', 134', and then change the entrance The angle of the first condenser lens 17; and turning the second plane mirror 16 can change the path of the reflected light 161 and the reflected light 144 together. The reflected light 161 'and the reflected light 144' can be changed, and the entrance can be changed. The angle of the second condenser lens 18. From the above, it can be known that by turning the first plane mirror 15 and the second plane mirror 16 can control the etendue value provided by the dual light source system 1 °

Page 15 594369 V. Description of the invention (10) ~~ '— In addition, the size of the first plane mirror 15 and the second plane mirror 16 can be changed appropriately, and the size of the new beam can also be controlled (only after rotation The first plane mirror 15 and the second plane mirror 16 should maintain the state of the condensing lens 17 and the second condensing lens 18 to avoid unnecessary overflow of light energy. The combined light of the lens 17 and the second condenser lens 18 can control the entering light homogenization duct 19ietendue value. As mentioned above, in addition to the problem that the general spherical lens is not easy to align, the design of the present case can also achieve the purpose of reducing the volume and the size of the light spot through the design of the confocal condenser lens combination. The plane reflection i (for example, the first plane mirror 15 or the second plane mirror 16) used in this case is a movable plane mirror. Therefore, when reflecting, the plane can be adjusted as required. The angle of the mirror can be adjusted as long as it reflects. The light reflected by a parabolic mirror (such as f-parabolic mirror 13 or second parabolic mirror 14) can be received by the binocular lens combination; this can control the etendue value to meet the demand. Another advantage of this case is 1 = 2 of the mirror (the first-plane mirror 15 or the second-plane mirror 16). However, the plane mirror needs to maintain a condensing lens group that can shield the part, so as to avoid unnecessary loss of light energy), the purpose of controlling the e ten due value can be achieved by changing the size of the synthetic beam. Therefore, even if the case has been detailed from the above example ^ ancient nine warriors 4 shi r ^ m examples. The description can be taken from, Shen: People can be modified in any way, but it is not as good as the scope of the attached patent protector.

594369 Simple illustration of the diagram Simple illustration of the diagram The first picture: the schematic diagram of the dual light source system of the preferred embodiment of this case. Figure 2: Schematic diagram of the reflected light path of the better implementation of this case. The third figure: a schematic diagram of the reflected light path of another preferred embodiment of the present case is not illustrated: 1:: dual light source system 11: first bulb 12: second bulb 13: first parabolic mirror 131, 133, 134: first 1st reflected light 1 3 2: 2nd reflected light 141, 143, 144 · 3rd reflected light 142: 4th reflected light 134 ', 144', 151, 151 ', 161, 161': reflected light 14: Second parabolic mirror 1 5: First plane mirror 16: Second plane mirror 17: First condenser lens 171: First oblique angle 18: Second condenser lens 181: Second oblique Angle 19: light homogenizing duct

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Claims (1)

594369 MM, ^ 07313 Month, said Amendment 6. Scope of patent application The reflected light is reflected to the first movable reflecting mirror, and becomes the first type of reflected light by the reflection of the first movable reflecting mirror. 7. The lighting system as described in item 1 of the scope of patent application, wherein the second parabolic mirror will reflect a third type of reflected light and a first type of four reflected light due to being illuminated by the second bulb. 8. The lighting system as described in item 7 of the scope of patent application, wherein the third type of reflected light directly enters the second condenser lens. 9 · The lighting system as described in item 7 of the scope of the patent application, wherein the fourth type of reflected light is reflected to the second movable reflecting mirror and becomes by reflection of the second movable reflecting mirror This third type reflects light. I 0. The lighting system according to item 1 of the scope of patent application, wherein an inner side of the first condenser lens is formed into a first oblique angle. II. The lighting system as described in claim 10, wherein the inside of the second condenser lens is formed into a second oblique angle. 1 2. The lighting system according to item 11 of the scope of patent application, wherein the first condenser lens and the second condenser lens are connected to the second oblique angle by the first oblique angle. 1 3. An illumination system comprising: a confocal condenser lens group including a first condenser lens and a second condenser lens; a first light source system and the first condenser lens are arranged opposite to each other and include A first bulb, a first reflecting mirror, and a first parabolic reflector, wherein the first parabolic reflector reflects a first type of reflected light and a second type of reflected light due to being illuminated by the first bulb And the first light M Page 19 594369 Case No. 92107313 Amendment 6. The scope of the patent application is set at the focal point of the first parabolic mirror, and the first reflecting mirror is located between the first parabolic mirror and the first condenser lens. The second type of reflected light is disposed in a forward direction; and a second light source system is disposed adjacent to the first light source system and opposite to the second condenser lens, and includes a second light bulb, a second reflecting mirror, and A second parabolic reflector, wherein the second parabolic reflector can reflect a third type of reflected light and a fourth type of reflected light due to being illuminated by the second light bulb, and wherein the second light bulb is disposed on the second The focal point of the parabolic reflector, and the second reflecting mirror is located between the second parabolic reflector and the second condenser lens and is disposed in a forward direction with the fourth type of reflected light. 14. The lighting system as described in item 13 of the scope of patent application, wherein the first type of reflected light directly enters the first condenser lens. 15. The lighting system as described in item 13 of the scope of patent application, wherein the third type of reflected light directly enters the second condenser lens. 16. The lighting system according to item 13 of the scope of patent application, wherein the inside of the first condenser lens is formed into a first oblique angle. 1 7. The lighting system according to item 16 of the scope of patent application, wherein the inside of the first condenser lens is formed into a second oblique angle. 1 8. The lighting system according to item 17 of the scope of patent application, wherein the first condenser lens and the second condenser lens are connected to the second oblique angle by the first oblique angle. 19. An optical engine comprising: a focusing lens group including a first condenser lens and a second condenser lens; Page 20 594369 --- Case No. 92107313_ Year, Month, Day, and Date of Amendment_ Sixth, the scope of application for a patent A dual-light source lighting system is arranged opposite to the focusing lens group, which includes a first light bulb, a first parabolic reflector, and a A first reflecting mirror, a second bulb, a second parabolic reflector and a second reflecting mirror, wherein the first bulb and the second bulb are respectively disposed on the first parabolic reflector and the second parabolic reflection The focal point of the mirror, and the first reflecting mirror and the second reflecting mirror are respectively disposed on the first parabolic reflecting mirror and the first condenser lens, and the second parabolic reflecting mirror and the second condenser lens Between; and a light homogenizing duct, which are respectively located on the opposite side of the focusing group from the dual-light source illumination system, and are used to transmit a first focused beam collected by the first condenser lens and a second focused beam A second focused light beam collected by the condenser lens. —I 2 0 • The optical engine according to item 9 of the patent application scope, wherein the first reflecting mirror and the second reflecting mirror are both flat mirrors. 2 1 · If the optical engine is in the scope of the patent application, where the first parabolic mirror and the second parabolic mirror 玎 are respectively irradiated by the first bulb and the second bulb, a first type of reflected light and a The second type of reflected light, a third type of reflected light, and a fourth type of reflected light. . 2 2 · The optical engine according to item 21 of the scope of the patent application, wherein the first type of reflected light and the third type of reflected light directly enter the first condenser lens and the second condenser lens, respectively. < ^ 2 3 · The photon engine according to the scope of application patent No. 21 1 ', wherein the -th reflecting mirror and the second reflecting mirror respectively reflect the second type of reflected light and the fourth type of reflected light. 594369 correction No. 92107 Training 6. The scope of patent application is to guide the application. 24. The photon described in item 9 of the scope of patent application, wherein the inside of the first condenser lens is formed into a first oblique angle. 2 5 · The child as described in item 24 of the scope of patent application, wherein the inside of the second condenser lens is formed as a second oblique negative / _ 26 · The light as described in item 25 of the scope of patent application, where the first A condenser lens and the second condenser lens are closely connected to the second oblique angle by the first oblique angle. {^ 2 7 · The optical engine according to item 9 of the patent application scope, wherein the first reflecting mirror and the second reflecting mirror are respectively shielded. The first condenser lens and the second condenser lens. 28 · An optical engine comprising: a focusing lens group including at least one condenser lens, wherein the condenser lenses are confocal and are disposed opposite to the parabolic mirror respectively; at least one light source lighting system, respectively It is arranged opposite to the focusing lens group, and each has a light bulb, a parabolic reflector and a reflecting mirror, wherein the bulb is arranged at the focal point of the parabolic reflector, and the reflecting mirror is arranged on the parabolic reflector Between the focusing lens group and the focusing lens group; and a light homogenizing duct, which is located on the opposite side of the focusing lens group from the light source illumination system, respectively, and is used for transmitting at least one focused light beam. 29. The optical engine according to item 28 of the scope of patent application, wherein the reflecting mirror is a movable flat mirror.