Adjusting device of projector lens
By using a dual-reflection light path internal component movement mechanism, the problems of inflexible light path layout, large size, and insufficient precision in projection equipment are solved, enabling miniaturization of projection equipment and precise adjustment of the projected image, adapting to diverse projection scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU JIUTIAN HUAXIN TECH CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-01
AI Technical Summary
Existing projection devices have inflexible optical path layouts, large device sizes, and difficulty in accurately adjusting the projected image, especially in portable projection devices and diverse projection scenarios.
The projector's internal component motion mechanism, which employs a dual-reflection light path, uses a motor-driven fan-shaped transmission component to move the connecting rod and reflector, thereby enabling the lens to move up and down and adjust its angle. Combined with changes in the light path, this allows for precise adjustment of the projected image.
It achieves miniaturized design of projection devices, improves the flexibility of optical path layout and the precise adjustment of the projected image, and adapts to diverse projection scenario needs.
Smart Images
Figure CN224190385U_ABST
Abstract
Description
An adjustment device for a projector lens Technical Field
[0001] This utility model relates to the field of pixel display technology, and in particular to an adjustment device for a projector lens. Background Technology
[0002] Currently, projection devices are widely used in various fields, but existing projection devices suffer from problems such as inflexible optical path layout, large device size, and difficulty in accurately adjusting the projected image. In some scenarios with strict requirements on device size, such as portable projection devices, traditional projection mechanisms are difficult to meet the needs; at the same time, different projection scenarios have high requirements for adjusting the position, angle, and focal length of the image, and existing motion mechanisms are insufficient in terms of precision and stability.
[0003] This invention provides a projector internal component motion mechanism with dual reflection light paths, achieving a compact and small-sized structure, improving the flexibility of light path layout and space utilization, and precisely adjusting the projected image to adapt to diverse projection scenarios. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a projector lens adjustment device, which effectively adjusts the height of the output image by changing the light path and coordinating the up and down movement of the lens, so as to adapt to various projection scenarios.
[0005] The purpose of this utility model is to provide a projector lens adjustment device through the following technical solution, including a housing, a lens, a rotating structure, and a reflecting structure;
[0006] The rotating structure includes a motor, a sector-shaped transmission component, a first connecting rod, and a second connecting rod. The motor and the sector-shaped transmission component are fixed inside the housing by a horizontal shaft. The output shaft of the motor is fixedly connected to the sector-shaped transmission component, and the sector-shaped transmission component rotates around the center under the drive of the motor.
[0007] One end of the first connecting rod is hinged to the arc end of the fan-shaped transmission component, and the other end of the first connecting rod is fixed to the lens. One end of the second connecting rod is hinged to the near-center end of the fan-shaped transmission component, and the other end of the second connecting rod is connected to the reflective structure.
[0008] The reflective structure includes a first reflector and a second reflector, which are disposed opposite to each other on the upper and lower sides of the second connecting rod and on the housing.
[0009] Furthermore, the inner and outer sides of the first end of the first reflector are both fixed to the housing, the inner side of the second end of the first reflector is disposed in the waist-shaped hole of the housing, and the outer side of the second end is disposed on the second connecting rod; the inner and outer sides of the first end of the second reflector are both fixed to the housing, the inner side of the second end of the second reflector is disposed in the waist-shaped hole of the housing, and the outer side of the second end is disposed on the second connecting rod, and the second ends of the first reflector and the second reflector are disposed close to each other.
[0010] Furthermore, the first linkage includes a first rocker and a second rocker. One end of the first rocker is hinged to the arc end of the fan-shaped transmission component, and the other end of the first rocker is fixed to the lens near the lens element. The first rocker is a straight rod. One end of the second rocker is fixed to the arc end of the fan-shaped transmission component, and the other end of the second rocker is fixed to the lens away from the lens element. The second rocker is a curved rod.
[0011] Furthermore, the second connecting rod includes a movable rod and a fixed rod. One end of the movable rod is hinged to the near-center end of the sector-shaped transmission member, and the other end of the movable rod is hinged to the fixed rod. The movable rod can rotate around the hinge point.
[0012] The fixed rod is fixed to the housing, and a triangular base is provided at the end of the fixed rod. The two vertices of the triangular base are respectively connected to the second ends of the first reflector and the second reflector.
[0013] Furthermore, at the two vertices of the triangular base at the end of the fixed rod, there are symmetrical waist-shaped holes.
[0014] This utility model has the following advantages:
[0015] (1) This utility model uses a first reflector and a second reflector to make the light path refract twice. By adjusting the displacement and tilt of the first reflector and the second reflector, the light path can move up and down in the lens and also achieve off-axis, thereby ensuring that the image maintains a high quality display.
[0016] (2) The present invention is provided with a transmission structure. The motor rotates and drives the fan-shaped transmission component to rotate, so that the first rocker and the second rocker fixed on the fan-shaped transmission component move, thereby enabling the lens to complete the vertical displacement. After the normal completion of light output is achieved by rotating the fan-shaped transmission component, the moving rod drives the fixed rod to move horizontally, so that the adjustment ends of the first and second reflectors fixed on the triangular base of the fixed rod move horizontally in the waist-shaped hole, so that the first and second reflectors move around the fixed end, thereby changing the angle. Attached Figure Description
[0017] Figure 1 is a structural diagram of this utility model;
[0018] Figure 2 is a partial structural diagram of the transmission structure of this utility model;
[0019] Figure 3 is a schematic diagram of the optical path changes during the movement of this utility model;
[0020] 1—Motor, 2—Fan-shaped transmission component, 3—First connecting rod, 4—Second connecting rod, 5—First reflecting mirror, 6—Second reflecting mirror, 7—House, 8—Lens, 9—Light source, 31—First rocker arm, 32—Second rocker arm, 41—Moving rod, 42—Fixed rod. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0022] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] It should be noted that, where there is no conflict, the embodiments and features and technical solutions in these embodiments of the present invention can be combined with each other. Embodiments
[0024] Referring to Figures 1 and 2, a projector lens adjustment device according to a specific embodiment of the present invention includes a housing, a lens, a rotating structure, and a reflecting structure;
[0025] The rotating structure includes a motor 1, a sector-shaped transmission component 2, a first connecting rod 3, and a second connecting rod 4. The motor 1 and the sector-shaped transmission component 2 are fixed inside the housing 7 by a horizontal shaft. The output shaft of the motor 1 is fixedly connected to the sector-shaped transmission component 2. The sector-shaped transmission component 2 rotates around the center under the drive of the motor 1.
[0026] One end of the first connecting rod 3 is hinged to the arc end of the fan-shaped transmission component 2, and the other end of the first connecting rod 3 is fixed to the lens 8. One end of the second connecting rod 4 is hinged to the near-center end of the fan-shaped transmission component 2, and the other end of the second connecting rod 4 is connected to the reflective structure.
[0027] The reflecting structure includes a first reflector 5 and a second reflector 6. The first reflector 5 and the second reflector 6 are arranged opposite each other on the upper and lower sides of the second connecting rod 4. The inner and outer sides of the first end of the first reflector 5 are fixed to the housing 1. The inner side of the second end of the first reflector 5 is arranged in the waist-shaped hole of the housing 7, and the outer side of the second end is arranged on the second connecting rod 4. The inner and outer sides of the first end of the second reflector 6 are fixed to the housing 7. The inner side of the second end of the second reflector 6 is arranged in the waist-shaped hole of the housing 7, and the outer side of the second end is arranged on the second connecting rod 4. The second ends of the first reflector 5 and the second reflector 6 are arranged close to each other. The adjusting end slides in the waist-shaped hole, thereby changing the tilt angle of the first reflector 5 and the second reflector 6.
[0028] Furthermore, the first connecting rod 3 includes a first rocker arm 31 and a second rocker arm 32. One end of the first rocker arm 31 is hinged to the arc end of the fan-shaped transmission member 2, and the other end of the first rocker arm 31 is fixed to the lens 8 near the lens end. The first rocker arm 31 is a straight rod. One end of the second rocker arm 32 is fixed to the arc end of the fan-shaped transmission member 2, and the other end of the second rocker arm 32 is fixed to the lens 8 away from the lens end. The second rocker arm 32 is a curved rod.
[0029] Furthermore, the second connecting rod 4 includes a movable rod 41 and a fixed rod 42. One end of the movable rod 41 is hinged to the near-center end of the sector-shaped transmission member 2, and the other end of the movable rod 41 is hinged to the fixed rod 42. The movable rod 41 can rotate around the hinge point.
[0030] The fixed rod 42 is fixed to the housing, and a triangular base is provided at the end of the fixed rod 42. The two vertices of the triangular base are respectively connected to the proximal ends of the first reflector 5 and the second reflector 6.
[0031] At the two vertices of the triangular base at the end of the fixed rod 42, there are symmetrical waist-shaped holes.
[0032] As shown in Figure 3, in order to adapt to the use of various projection scenarios, the lens needs to be moved up and down for adjustment, thereby causing the output image to move up and down. During the up and down movement of the lens 8, the motor 1 rotates, driving the fan-shaped transmission component 2 to rotate, causing the first rocker arm 31 and the second rocker arm 32 fixed on the fan-shaped transmission component 2 to move, thereby enabling the lens to complete the up and down displacement. At the same time, in the adjustment image of the light path, the light source 9 emits light, which shines on the first reflector 5. After the fan-shaped transmission component 2 rotates, the moving rod 41 drives the fixed rod 42 to move horizontally, thereby causing the adjustment ends of the first reflector 5 and the second reflector 6 fixed on the triangular base of the fixed rod 42 to move horizontally in the waist-shaped hole, causing the first reflector 5 and the second reflector 6 to move around the fixed end, thereby changing the angle. During the movement, ∠1 is always equal to ∠2, and ∠3 is always equal to ∠4.
[0033] The above embodiments only illustrate preferred implementation methods, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from this utility model, and these all fall within the protection scope of this utility model.
Claims
1. An adjustment device for a projector lens, comprising a housing (7) and a lens (8), characterized in that: It also includes a rotating structure and a reflecting structure; the rotating structure includes a motor (1), a fan-shaped transmission component (2), a first connecting rod (3) and a second connecting rod (4), the motor (1) and the fan-shaped transmission component (2) are fixed in the housing (7) by the same horizontal shaft, the output shaft of the motor (1) is fixedly connected to the fan-shaped transmission component (2), and the fan-shaped transmission component (2) rotates around the center under the drive of the motor (1); one end of the first connecting rod (3) is hinged to the arc end of the fan-shaped transmission component (2), the other end of the first connecting rod (3) is fixed to the lens (8), one end of the second connecting rod (4) is hinged to the near-center end of the fan-shaped transmission component (2), and the other end of the second connecting rod (4) is connected to the reflecting structure; the reflecting structure includes a first reflecting mirror (5) and a second reflecting mirror (6), the first reflecting mirror (5) and the second reflecting mirror (6) are arranged opposite to each other on the upper and lower sides of the second connecting rod (4), and are arranged on the second connecting rod (4) and the housing (7).
2. The projector lens adjustment device according to claim 1, characterized in that: The inner and outer sides of the first end of the first reflector (5) are fixed to the housing (1). The inner side of the second end of the first reflector (5) is set in the waist-shaped hole of the housing (7), and the outer side of the second end is set on the second connecting rod (4). The inner and outer sides of the first end of the second reflector (6) are fixed to the housing (7). The inner side of the second end of the second reflector (6) is set in the waist-shaped hole of the housing (7), and the outer side of the second end is set on the second connecting rod (4). The second ends of the first reflector (5) and the second reflector (6) are set close to each other.
3. The adjustment device for a projector lens according to claim 1, characterized in that: The first connecting rod (3) includes a first rocker (31) and a second rocker (32). One end of the first rocker (31) is hinged to the arc end of the fan-shaped transmission member (2), and the other end of the first rocker (31) is fixed to the lens (8) near the lens end. The first rocker (31) is a straight rod. One end of the second rocker (32) is fixed to the arc end of the fan-shaped transmission member (2), and the other end of the second rocker (32) is fixed to the lens (8) away from the lens end. The second rocker (32) is a curved rod.
4. The projector lens adjustment device according to claim 2, characterized in that: The second connecting rod (4) includes a moving rod (41) and a fixed rod (42). One end of the moving rod (41) is hinged to the near-center end of the fan-shaped transmission member (2), and the other end of the moving rod (41) is hinged to the fixed rod (42). The moving rod (41) can rotate around the hinge. The fixed rod (42) is fixed on the housing (7). The end of the fixed rod (42) is provided with a triangular base. The two vertices of the triangular base are respectively connected to the second end of the first reflector (5) and the second end of the second reflector (6).
5. The projector lens adjustment device according to claim 4, characterized in that: At the two vertices of the triangular base at the end of the fixed rod (42), there are symmetrical waist-shaped holes.