Light path system for stage projection lamp

Abstract

The application discloses a light path system for a stage projection lamp, which comprises a light source assembly, a parallel light lens and an objective lens assembly, and the light source assembly, the parallel light lens and the objective lens assembly are arranged in sequence from back to front; the light source assembly comprises a plurality of halogen lamps with different powers and a plurality of supporting legs with different heights, and the halogen lamps and the supporting legs are in one-to-one correspondence; the halogen lamps are fixedly installed on the corresponding supporting legs, and the supporting legs are detachably installed on a base; a rectangular slot is formed in the bottom of each supporting leg, and a rectangular inserting column capable of being inserted into the slot is arranged at the position corresponding to the supporting leg on the base. The disassembly of the supporting leg and the halogen lamp can be more simply realized, and since the height of the supporting leg is matched with the power of the halogen lamp, the halogen lamp and the optical axis can be ensured to be centered, and the projection brightness can also be ensured. Therefore, the corresponding halogen lamp and the supporting leg can be selected according to the actual situation, so that the flexibility of the projection lamp is higher, and the application range can be expanded.

Description

Technical Field

[0001] This application relates to the field of stage projection lighting technology, specifically to an optical path system for stage projection lighting. Background Technology

[0002] In the field of stage performance, traditional stage lighting design and equipment arrangement often face some limitations. Traditional stage lighting equipment, such as projectors and lamps, are designed with specific projection distances and angles pre-set, which means that each type of lamp has its fixed optical characteristics and is suitable for specific stage environments.

[0003] This fixed lighting system design brings many inconveniences in practical applications. When encountering stages of different sizes and layouts, it is necessary to replace or add suitable projection equipment according to the specific dimensions and needs of the venue. This not only increases the economic cost of equipment procurement and maintenance, but may also lead to operational complexity due to the diversity of lighting fixtures, affecting the rapid setup and adjustment of disassembly and assembly work. Utility Model Content

[0004] Therefore, this application provides an optical path system for stage projectors to solve the problems of limited applicability and inflexibility of existing stage projectors.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An optical path system for a stage projection light includes a base and a light source assembly, a parallel light lens, and an objective lens assembly mounted on the base. The light source assembly, parallel light lens, and objective lens assembly are arranged sequentially from back to front. The light source assembly includes multiple halogen lamps of different power and multiple support feet of different heights, with each halogen lamp corresponding to one of the support feet. The halogen lamps are fixedly mounted on their respective support feet, and the support feet are detachably mounted on the base. Each support foot has a rectangular slot at its bottom, and the base has a rectangular post at a position corresponding to the support foot that can be inserted into the slot.

[0007] Optionally, a fixing groove is provided on the peripheral wall of the support foot, and the fixing groove extends downward through the bottom surface of the support foot; a screw hole is provided on the top wall of the fixing groove, and a first screw for fixing the support foot to the base is fitted in the screw hole.

[0008] Optionally, the objective lens assembly includes a fixed part and a rotating part on which a lens is mounted. The rotating part is rotatably connected to the front end of the fixed part, and a second screw for limiting the rotation of the rotating part is threaded through the peripheral wall of the fixed part.

[0009] Optionally, a reflector bowl is provided behind the halogen lamp, and the surface of the reflector bowl is provided with a reflective coating for filtering infrared rays.

[0010] Optionally, a condenser lens is provided in front of the halogen lamp, which is used to uniformly project the light emitted by the halogen lamp onto the parallel light lens.

[0011] Optionally, a glass for absorbing and isolating heat is provided in front of the condenser lens.

[0012] Optionally, it also includes the DMX512 lamp mainstream communication protocol, which is used to control the brightness and on-time of the halogen lamp.

[0013] Optionally, it also includes a motorized aperture, the size of which is controlled by the mainstream communication protocol of the DMX512 lamp.

[0014] Compared with the prior art, this application has at least the following beneficial effects:

[0015] The combination of inserts and slots simplifies the assembly and disassembly of the support feet and halogen lamps. Furthermore, because the height of the support feet is matched to the wattage of the halogen lamp, the halogen filament and optical axis are centered, ensuring optimal projection quality. Therefore, the appropriate halogen bulb and support feet can be selected based on the required light source brightness, increasing the flexibility and expanding the application range of the projection lamp. Attached Figure Description

[0016] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0017] Figure 1 This application provides a schematic diagram of the optical path system for a stage projection lamp.

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 for Figure 2 Schematic diagram of the middle support leg;

[0020] Figure 4 for Figure 2 Top view of the middle support leg;

[0021] Figure 5A schematic diagram of the optical path system for a stage projection lamp provided in this application embodiment, wherein the light source component uses a halogen lamp;

[0022] Figure 6 This is a schematic diagram of the optical path system for a stage projection lamp provided in an embodiment of this application, wherein the light source component uses an LED lamp.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base; 2. Light source assembly; 3. Parallel light lens; 4. Halogen lamp; 5. Support foot; 6. Slot; 7. Fixing slot; 8. Screw hole; 9. Fixing part; 10. Rotating part; 11. Second screw; 12. Reflector bowl; 13. Condenser lens; 14. Heat-insulating glass; 15. LED lamp; 16. Film; 17. LED lens. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0027] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0028] A stage projection light optical path system, referenced Figures 1-5 It includes a base 1 and a light source assembly 2, a parallel light lens 3 and an objective lens assembly mounted on the base 1, which are arranged in sequence from back to front.

[0029] The light source assembly 2 includes multiple halogen lamps 4 of different power ratings (such as 1000W, 2000W, 2500W, etc.) and multiple support feet 5 of different heights, with a one-to-one correspondence between the number of halogen lamps 4 and the number of support feet 5. The halogen lamps 4 are fixedly mounted on their corresponding support feet 5, so that the halogen lamps 4 can be centered with the optical axis under the support of the support feet 5, ensuring the projection effect.

[0030] The support foot 5 is detachably mounted on the base 1. Specifically, each support foot 5 has at least two rectangular slots 6 at its bottom. The base 1 has rectangular inserts that can be inserted into the slots 6 at the positions corresponding to the support foot 5. When replacing the support foot 5, simply lift the support foot 5 upwards to release the engagement between the insert and the slot 6.

[0031] To improve the stability of the support leg 5 on the base 1, a fixing groove 7 is provided on the peripheral wall of the support leg 5, extending downwards through the bottom surface of the support leg 5. A screw hole 8 is provided on the top wall of the fixing groove 7, penetrating the top of the support leg 5. A first screw for fixing the support leg 5 to the base 1 is fitted into the screw hole 8. The first screw can lock the support leg 5 onto the base 1, preventing it from loosening during equipment transfer or handling.

[0032] In some embodiments, multiple fixing grooves 7 can be spaced out on the peripheral wall of the support foot 5 along the circumferential direction, thereby locking the support foot 5 at different positions and further improving its installation stability.

[0033] Reference Figure 5 The objective lens assembly contains two coaxially arranged convex lenses with imaging capabilities, the purpose of which is to magnify and image the image on the film 16.

[0034] The objective lens assembly includes a fixed part 9 and a rotating part 10 on which a lens is mounted. The rotating part 10 is coaxially arranged with the fixed part 9 and is rotatably connected to the front end of the fixed part 9. By driving the rotating part 10 to rotate, the focal length of the objective lens can be adjusted to adapt to different light sources.

[0035] Correspondingly, a second screw 11 is threaded through the peripheral wall of the fixing part 9 to restrict the rotation of the rotating part 10. By rotating the second screw 11, the rotating part 10 can be locked and released.

[0036] A concave-convex mirror and a plano-convex mirror are fixed inside the rotating part 10. The convex surface of the plano-convex mirror is forward, and the concave surface of the concave-convex mirror is forward. They work together to magnify and present the image on the film 16.

[0037] A reflector bowl 12 is located behind the halogen lamp 4. The surface of the reflector bowl 12 is coated with a reflective layer to filter infrared rays, resulting in lower heat from the reflected light. It also focuses the light from the light source, improving luminous efficiency.

[0038] A condenser lens 13 is provided in front of the halogen lamp 4. The condenser lens 13 is used to project the light emitted by the halogen lamp 4 onto the parallel light lens 3 at a certain angle. The parallel light lens 3 includes two opposing and coaxial plano-convex mirrors. The convex surfaces of the two plano-convex mirrors face each other to convert the light into parallel light and control the light emitted by the light source to uniformly illuminate the film 16.

[0039] A heat-insulating glass 14 is provided in front of the condenser lens 13 to absorb heat, absorbing and isolating most of the heat and preventing the film 16 between the parallel light lens 3 and the objective lens assembly from burning out.

[0040] The stage projection light optical path system also includes the DMX512 lamp mainstream communication protocol, which is used to control the brightness and on-time of the halogen lamp 4.

[0041] Correspondingly, the optical path system for stage projection lights also includes an electric aperture. The mainstream communication protocol of DMX512 lamps is used to control the size of the electric aperture in order to obtain a better brightness dimming curve for the lamps.

[0042] Reference Figure 6 In this embodiment, the halogen lamp 4 in the stage projection lamp can be replaced with an LED light source, and its brightness and on-time can be controlled via the DMX512 mainstream communication protocol. Correspondingly, the parallel light lens 3 and objective lens assembly are also replaced. The parallel light lens 3 uses two parallel and coaxial Fresnel lenses. The advantage of Fresnel lenses is that they can be made of resin material, reducing weight, saving costs, and shortening the length of the lamp body. The LED lamp 15 uses a point light source to concentrate energy. An LED lens 17 is located in front of the LED lamp 15.

[0043] The light source assembly 2, the parallel light lens 3, and the objective lens assembly are all connected by bolts, so they can be replaced individually. For example, LED and halogen light source modules, plano-convex lens and Fresnel lens modules, film adjustment modules and LCD screen modules, and short-focal-length objective lens modules of various focal lengths can all be used in a targeted manner.

[0044] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A stage projection light optical path system, characterized in that: The system includes a base (1) and a light source assembly (2), a parallel light lens (3), and an objective lens assembly mounted on the base (1). The light source assembly (2), the parallel light lens (3), and the objective lens assembly are arranged sequentially from back to front. The light source assembly (2) includes multiple halogen lamps (4) with different power levels and multiple support feet (5) with different heights. Each halogen lamp (4) corresponds to a support foot (5). The halogen lamp (4) is fixedly mounted on the corresponding support foot (5), and the support foot (5) is detachably mounted on the base (1). Each support foot (5) has a rectangular slot (6) at its bottom, and the base (1) has a rectangular insert that can be inserted into the slot (6) at the position corresponding to the support foot (5).

2. The optical path system for a stage projection lamp according to claim 1, characterized in that: A fixing groove (7) is provided on the peripheral wall of the support foot (5), and the fixing groove (7) extends downward through the bottom surface of the support foot (5); a screw hole (8) is provided on the top wall of the fixing groove (7), and a first screw for fixing the support foot (5) to the base (1) is fitted in the screw hole (8).

3. The optical path system for a stage projection lamp according to claim 1, characterized in that: The objective lens assembly includes a fixed part (9) and a rotating part (10) on which a lens is mounted. The rotating part (10) is rotatably connected to the front end of the fixed part (9). A second screw (11) for limiting the rotation of the rotating part (10) is threaded through the peripheral wall of the fixed part (9).

4. The optical path system for a stage projection lamp according to claim 1, characterized in that: A reflector bowl (12) is provided behind the halogen lamp (4), and the surface of the reflector bowl (12) is provided with a reflective coating for filtering infrared rays.

5. The optical path system for a stage projection lamp according to claim 4, characterized in that: A condenser lens (13) is provided in front of the halogen lamp (4), and the condenser lens (13) is used to uniformly project the light emitted by the halogen lamp (4) onto the parallel light lens (3).

6. The optical path system for a stage projection lamp according to claim 5, characterized in that: A heat-insulating glass (14) for absorbing and isolating heat is provided in front of the condenser lens (13).

7. The optical path system for a stage projection lamp according to claim 1, characterized in that: It also includes the DMX512 lamp mainstream communication protocol, which is used to control the brightness and on-time of the halogen lamp (4).

8. The optical path system for a stage projection lamp according to claim 7, characterized in that: It also includes an electric aperture, the DMX512 lamp's mainstream communication protocol being used to control the size of the electric aperture.

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