A lighting source

Abstract

The utility model belongs to the field of LCD projection technology, and specifically relates to a lighting source, including a light source module, and a screen assembly and a projection lens arranged in sequence along the light-emitting direction of the light source module, characterized in that: the light source module is composed of a light source, and a light rod and an auxiliary lens arranged in sequence along the light-emitting direction, the outer periphery of the light rod is wrapped and assembled with a light rod focusing adjustment mechanism for adjusting the focusing degree, the light rod focusing adjustment mechanism is composed of a ring frame 1, a ring frame 2, a cylinder 1, a cylinder 2, and an array-distributed curved mirror 1 and a curved mirror 2, the curved mirror 1 is array-wrapped and arranged on the outer surface of the light rod, and the curved mirror 2 is array-wrapped and arranged on the outer surface of the light rod. The utility model simplifies all components of the entire lighting system, reduces the amount of component input, and reduces the production cost. In addition, it is provided with a device that can change the light effect of the light rod, which is equivalent to indirectly reducing the size of the light rod and optimizing the overall light path volume.

Description

Technical Field

[0001] The utility model belongs to the technical field of LCD projection, and in particular relates to an illumination light source. Background Art

[0002] In LCD projection, the mainstream market is still using a single-chip LCD full-color screen. The light source only needs to use a white light source to project a color image. The projection light path is as follows: the white light source emits white light. After passing through the light cup, the light spot becomes a rectangular light spot that is not much different in size from the LCD screen. After being refracted by the Fresnel mirror, it enters the LCD screen as nearly collimated light. After passing through the LCD screen, it is refracted by the Fresnel lens and enters the projection lens to be projected onto the screen. However, the image color at this time is very poor, and the color gamut of the picture is about 40%. The main reason is caused by the LCD screen itself; and there is no light-averaging device in the optical path, resulting in very poor picture uniformity. Utility Model Content

[0003] The purpose of the utility model is to provide a lighting source that can simplify all components of the entire lighting system, reduce the amount of component investment, and reduce production costs. In addition, a device that can change the light effect of the light stick is provided, which is equivalent to indirectly reducing the size of the light stick and optimizing the overall light path volume.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A lighting source, comprising a light source module, and a screen assembly and a projection lens sequentially arranged along the light emitting direction of the light source module, characterized in that: the light source module is composed of a light source, and a light rod and an auxiliary lens sequentially arranged along the light emitting direction, and the outer periphery of the light rod is wrapped with a light rod focusing adjustment mechanism for adjusting the focusing degree;

[0006] The light rod focusing adjustment mechanism is composed of a ring frame 1, a ring frame 2, a cylinder 1, a cylinder 2, and an array-distributed curved mirror 1 and a curved mirror 2; the curved mirror 1 is array-wrapped and arranged on the outer surface of the light rod, the telescopic output end of the cylinder 1 is fixedly connected with a ring plate 1, the edge of the ring frame 1 is array-fixedly connected with an inclined guide tube 1, the interior of the inclined guide tube 1 is movably interspersed with an inner rod 1, one end of the inner rod 1 is fixedly connected to the outer wall of the corresponding curved mirror 1, and the other end of the inner rod 1 is passed through the inclined guide tube The steel wire of tube one is connected to ring plate one; the arc mirror two is wrapped in an array and arranged on the outer surface of the light rod; the telescopic output end of the cylinder two is fixedly connected to an extension frame, one side of the extension frame is fixedly connected to ring plate two through a connecting rod at the support end, the edge of the ring frame two is fixedly connected to inclined conduits two in an array, and inner rods two are movably inserted inside the inclined conduits two, one end of the inner rods two is fixedly connected to the outer wall of the corresponding arc mirror two, and the other end of the inner rods two is connected to ring plate two through a steel wire penetrating the inclined conduits two.

[0007] The screen assembly is mainly composed of an LCD screen, and the surfaces on both sides of the LCD screen are respectively provided with Fresnel mirror 1 and Fresnel mirror 2, and Fresnel mirror 1 is arranged on the side of the LCD screen facing the light source module, and heat-insulating glass is arranged between Fresnel mirror 1 and the LCD screen.

[0008] The projection lens is arranged at the end of the light emitting direction of the light source module of the lighting system.

[0009] The light source module and the screen assembly are arranged at an arbitrary angle, and the propagation of light between the two is refracted by the arranged prism.

[0010] One side edge of the arc mirror 1 is wrapped inside the arc mirror 2, the ring frame 2 is fixedly arranged on one side of the ring frame 1, and the cylinder 2 is fixedly arranged on one side of the cylinder 2.

[0011] The inclination angle of the second inclined conduit is greater than the inclination angle of the first inclined conduit.

[0012] The technical effects achieved by the utility model are:

[0013] (1) In the present invention, light is reflected multiple times in the light rod and becomes relatively uniform after it comes out. Therefore, the size of the light rod will be relatively long, resulting in a larger overall light path size. However, all components of the entire lighting system are very simple and there are relatively few components. Therefore, the overall cost is the cheapest. In addition, there is no loss of light efficiency in the middle, and the overall light efficiency is also high. Therefore, it is the optimal solution for cost, efficiency and effect.

[0014] (2) The utility model provides a device capable of changing the light effect of the light stick. When the arc mirror 1 and the arc mirror 2 are both fitted to cover the light stick, the scattered light passing through the outer wall of the light stick can be collected and gathered and refracted toward the auxiliary lens. By optimizing the light effect of the light stick, the size of the light stick can be indirectly reduced, thereby optimizing the overall optical path volume size. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the integrated structure of the lighting source provided by the embodiment of the utility model;

[0016] Figure 2 Schematic diagrams of two arrangement structures of lighting sources provided in embodiments of the utility model;

[0017] Figure 3 It is a structural diagram of the light rod focusing adjustment mechanism provided in an embodiment of the utility model;

[0018] Figure 4 It is a disassembly diagram of the light rod focusing adjustment mechanism provided in the embodiment of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Light source; 2. Light rod; 3. Auxiliary lens; 4. Fresnel mirror 1; 5. Heat-insulating glass; 6. LCD screen; 7. Fresnel mirror 2; 8. Projection lens; 9. Light rod focusing adjustment mechanism; 901. Ring frame 1; 902. Ring frame 2; 903. Cylinder 1; 904. Cylinder 2; 905. Extension frame; 906. Ring plate 1; 907. Ring plate 2; 908. Oblique guide tube 1; 909. Oblique guide tube 2; 910. Inner rod 1; 911. Inner rod 2; 912. Curved mirror 1; 913. Curved mirror 2. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0022] like Figure 1-4 As shown, a lighting source includes a light source module, and a screen assembly and a projection lens 8 arranged in sequence along the light-emitting direction of the light source module, characterized in that: the light source module is composed of a light source 1, and a light rod 2 and an auxiliary lens 3 arranged in sequence along the light-emitting direction; the screen assembly is mainly composed of an LCD screen 6, and the surfaces on both sides of the LCD screen 6 are respectively provided with a Fresnel mirror 1 4 and a Fresnel mirror 2 7, and the Fresnel mirror 1 4 is arranged on the side of the LCD screen 6 facing the light source module, and an insulating glass 5 is arranged between the Fresnel mirror 1 4 and the LCD screen 6; the projection lens 8 is arranged at the end of the light-emitting direction of the light source module of the lighting system.

[0023] See attached Figure 2 The light source module and the screen assembly are arranged at an arbitrary angle, and the propagation of light between the two is refracted by the arranged prism.

[0024] According to the above structure, we match the size of the light rod 2 according to the size of the light emitting surface of the light source 1, so that all the light emitted by the light source 1 can enter the light rod 2. The light rod 2 can be solid or hollow. After multiple reflections from the light rod 2, the light is very uniform after coming out. Then, it passes through the auxiliary lens 3 and the Fresnel mirror and is evenly irradiated on the LCD screen 6. Since the light must be reflected multiple times in the light rod 2 to be relatively uniform after coming out, the size of the light rod 2 will be relatively long, resulting in a larger overall optical path size. However, all the components of the entire lighting system are very simple and there are relatively few components, so the overall cost is the cheapest, and there is no light efficiency loss in the middle, and the overall light efficiency is also high, so it is the optimal solution for cost, efficiency and effect; of course, we can also add some reflectors in the optical path to try to meet different size requirements, such as Figure 2 .

[0025] See attached Figure 1 and Figure 3 The outer periphery of the light rod 2 is wrapped with a light rod focusing adjustment mechanism 9 for adjusting the focusing degree; the light rod focusing adjustment mechanism 9 is composed of a ring frame 1 901, a ring frame 2 902, a cylinder 1 903, a cylinder 2 904, and an array-distributed curved mirror 1 912 and a curved mirror 2 913;

[0026] See attached Figure 3 and Figure 4 , a curved mirror 912 is arranged in an array-like wrapping manner on the outer surface of the light rod 2, the telescopic output end of the cylinder 903 is fixedly connected with a ring plate 906, the edge of the ring frame 901 is fixedly connected with an inclined conduit 908 in an array-like manner, and an inner rod 910 is movably inserted into the interior of the inclined conduit 908, one end of the inner rod 910 is fixedly connected to the outer wall of the corresponding curved mirror 912, and the other end of the inner rod 910 is connected to the ring plate 906 through a steel wire that penetrates the inclined conduit 908; a curved mirror 913 is arranged in an array-like wrapping manner Placed on the outer surface of the light rod 2, the telescopic output end of the cylinder 2 904 is fixedly connected to the extension frame 905, one side of the extension frame 905 is fixedly connected to the ring plate 2 907 through the connecting rod at the branch end, the edge of the ring frame 2 902 is fixedly connected to the inclined conduit 2 909 in an array-like manner, and the interior of the inclined conduit 2 909 is movably interspersed with an inner rod 2 911, one end of the inner rod 2 911 is fixedly connected to the outer wall of the corresponding curved mirror 2 913, and the other end of the inner rod 2 911 is connected to the ring plate 2 907 through a steel wire that penetrates the inclined conduit 2 909.

[0027] See attached Figure 3 and Figure 4 One side edge of the arc mirror 1 912 is wrapped inside the arc mirror 2 913, the ring frame 2 902 is fixedly arranged on one side of the ring frame 1 901, the cylinder 2 904 is fixedly arranged on one side of the cylinder 2 904, and the inclination angle of the inclined conduit 2 909 is greater than the inclination angle of the inclined conduit 1 908.

[0028] According to the above structure, when light passes through the light rod 2, part of the light will pass through the outer wall of the light rod 2 and radiate to the surroundings. At this time, the curved mirror 1 912 and the curved mirror 2 913 located around it can gather the light radiated to the surroundings and refract it to the auxiliary lens 3, so as to improve the overall light effect. Among them, the light effect can be adjusted by only opening the curved mirror 2 913 or fully opening the curved mirror 1 912 and the curved mirror 2 913. When it is only necessary to open the curved mirror 2 913, the control cylinder 2 904 is contracted, and the steel wire is pulled through the ring plate 2 907 to make each inner rod 2 911 correspondingly retract into the interior of the inclined guide tube 2 909. At this time, each curved mirror 2 913 will radiate to the surroundings, thereby realizing the change of the light effect of the light rod 2. In addition, when it is necessary to fully open the curved mirror 2 913, the control cylinder 2 904 is controlled to contract, and the steel wire is pulled through the ring plate 2 907 to make each inner rod 2 911 correspondingly retract into the interior of the inclined guide tube 2 909. At this time, each curved mirror 2 913 will radiate to the surroundings, thereby realizing the change of the light effect of the light rod 2. When opening the curved mirror 1 912 and the curved mirror 2 913, first control the cylinder 2 904 to contract and open all the curved mirrors 2 913, and then control the cylinder 1 903 to contract, and pull the steel wire through the ring plate 1 906 to make each inner rod 1 910 correspondingly retract into the interior of the inclined guide tube 1 908. At this time, each curved mirror 1 912 will radiate to the surroundings, thereby further changing the light effect of the light rod 2. This process is endowed with a device that can change the light effect of the light rod 2. When the curved mirror 1 912 and the curved mirror 2 913 are both fitted to cover the light rod 2, they can collect scattered light passing through the outer wall of the light rod 2 and gather it to refract toward the auxiliary lens 3. By optimizing the light effect of the light rod 2, the size of the light rod 2 can be indirectly reduced, and the overall optical path volume size is optimized.

[0029] The working principle of the utility model is as follows: we match the size of the light rod 2 with the size of the light emitting surface of the light source 1, so that all the light emitted by the light source 1 can enter the light rod 2. The light rod 2 can be solid or hollow. After multiple reflections from the light rod 2, the light is very uniform after it comes out. Then, it passes through the auxiliary lens 3 and the Fresnel mirror and is evenly irradiated on the LCD screen 6. Since the light must be reflected multiple times in the light rod 2, it will be relatively uniform after it comes out.

[0030] When light passes through the light rod 2, part of the light will pass through the outer wall of the light rod 2 and radiate to the surroundings. At this time, the curved mirror 1 912 and the curved mirror 2 913 located around can gather the light radiated to the surroundings and refract it to the auxiliary lens 3, so as to improve the overall light effect. Among them, the light effect can be adjusted by only opening the curved mirror 2 913 or fully opening the curved mirror 1 912 and the curved mirror 2 913. When only the curved mirror 2 913 needs to be fully opened, the cylinder 2 904 is controlled to contract, and the steel wire is pulled through the ring plate 2 907, so that each inner rod 2 911 corresponds to Retracted into the interior of the inclined conduit 1 909, at this time, each curved mirror 1 913 will radiate to the surroundings, thereby changing the light effect of the light stick 2. In addition, when it is necessary to open all the curved mirrors 1 912 and 2 913, first control the cylinder 2 904 to retract and open all the curved mirrors 2 913, and then control the cylinder 1 903 to retract, and pull the steel wire through the ring plate 1 906 to make each inner rod 1 910 retract into the interior of the inclined conduit 1 908 accordingly. At this time, each curved mirror 1 912 will radiate to the surroundings, thereby further changing the light effect of the light stick 2.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An illumination light source, comprising a light source module, and a screen assembly and a projection lens (8) arranged in sequence along the light emission direction of the light source module, characterized in that: The light source module is composed of a light source (1), a light rod (2) and an auxiliary lens (3) arranged in sequence along the light emitting direction, and a light rod focusing adjustment mechanism (9) for adjusting the focusing degree is assembled in a wrap-around manner on the outer periphery of the light rod (2); The light rod focusing adjustment mechanism (9) is composed of a ring frame 1 (901), a ring frame 2 (902), a cylinder 1 (903), a cylinder 2 (904), and an array of curved mirrors 1 (912) and 2 (913); the curved mirrors 1 (912) are arranged in an array and wrapped around the outer surface of the light rod (2); the telescopic output end of the cylinder 1 (903) is fixedly connected to a ring plate 1 (906); the edge of the ring frame 1 (901) is fixedly connected to an inclined conduit 1 (908) in an array; the interior of the inclined conduit 1 (908) is movably interspersed with an inner rod 1 (910); one end of the inner rod 1 (910) is fixedly connected to the outer wall of the corresponding curved mirror 1 (912); the other end of the inner rod 1 (910) is inserted through the inclined conduit 1 (908) to form a fixed connection. The steel wire of the conduit 1 (908) is connected to the ring plate 1 (906); the arc mirror 2 (913) is arranged in an array-like manner on the outer surface of the light rod (2); the telescopic output end of the cylinder 2 (904) is fixedly connected to the extension frame (905); one side of the extension frame (905) is fixedly connected to the ring plate 2 (907) through a connecting rod at the branch end; the edge of the ring frame 2 (902) is fixedly connected to the inclined conduit 2 (909) in an array-like manner; the interior of the inclined conduit 2 (909) is movably interspersed with an inner rod 2 (911); one end of the inner rod 2 (911) is fixedly connected to the outer wall of the corresponding arc mirror 2 (913); the other end of the inner rod 2 (911) is connected to the ring plate 2 (907) through a steel wire that penetrates the inclined conduit 2 (909).

2. The lighting source according to claim 1, characterized in that: The screen assembly is mainly composed of an LCD screen (6), and the surfaces of both sides of the LCD screen (6) are respectively provided with a Fresnel mirror 1 (4) and a Fresnel mirror 2 (7), and the Fresnel mirror 1 (4) is arranged on the side of the LCD screen (6) facing the light source module, and a heat-insulating glass (5) is arranged between the Fresnel mirror 1 (4) and the LCD screen (6).

3. The lighting source according to claim 1, characterized in that: The projection lens (8) is arranged at the end of the light emitting direction of the light source module.

4. The lighting source according to claim 1, characterized in that: The light source module and the screen assembly are arranged at an arbitrary angle, and the propagation of light between the two is refracted by the arranged prism.

5. The lighting source according to claim 1, characterized in that: One side edge of the arc mirror one (912) is wrapped around the inner side of the arc mirror two (913), the ring frame two (902) is fixedly arranged on one side of the ring frame one (901), and the cylinder two (904) is fixedly arranged on one side of the cylinder two (904).

6. The lighting source according to claim 1, characterized in that: The inclination angle of the second inclined conduit (909) is greater than the inclination angle of the first inclined conduit (908).

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