Monolithic liquid crystal display (LCD) dynamic projection lamp

Abstract

The invention provides a monolithic LCD (liquid crystal display) dynamic projection lamp. The monolithic LCD dynamic projection lamp comprises an upper fixing part, a lower fixing part and a control element, the upper fixing piece and the lower fixing piece are covered to form a cavity for accommodating a projection assembly; a projection hole for the projection assembly to project an image is formed in the top of the upper fixing part; the control element is mounted at the bottom of the lower fixing piece; the control element is electrically connected with the projection assembly, and the projection assembly comprises an imaging mirror, an LCD liquid crystal screen and a collecting lens. According to the invention, high-quality dynamic image projection can be realized only by using one condensing lens, one imaging lens and one LCD screen. According to the scheme, the optical structure in traditional projection equipment is simplified, the manufacturing cost is effectively reduced, the projection equipment can be miniaturized more easily, and the requirement of the market for portable and efficient projection equipment is met. The projection lamp has the advantages of being small and exquisite in design and low in cost, so that the projection lamp is suitable for various occasions, and good market potential is shown.

Description

Technical Field

[0001] The invention relates to the technical field of imaging devices, in particular to a single-chip LCD dynamic projection lamp. Background Art

[0002] In the prior art, traditional dynamic projection lamps often use complex optical systems, such as multiple liquid crystal panels or DLP chips in conjunction with complex optical systems to achieve image projection, which results in large equipment size and high cost, and cannot meet the market demand for miniaturized, low-cost projection equipment. Therefore, it is necessary to provide a new type of miniaturized, low-cost single-chip LCD dynamic projection lamp to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a single-chip LCD dynamic projection lamp, which can realize high-quality dynamic image projection by using only one condenser lens, one imaging lens and one LCD screen. This solution not only simplifies the optical structure in the traditional projection equipment, but also effectively reduces the manufacturing cost, making the projection equipment easier to miniaturize, and meeting the market demand for portable and efficient projection equipment.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a single-chip LCD dynamic projection lamp, comprising an upper fixing member, a lower fixing member and a control element; wherein: the upper fixing member and the lower fixing member are covered to form a cavity for accommodating a projection component; a projection hole is provided on the top of the upper fixing member for the projection component to project an image; the control element is installed at the bottom of the lower fixing member; and the control element is electrically connected to the projection component.

[0005] As a further improvement of the technical solution of the present invention, the projection assembly includes an imaging mirror, an LCD screen and a condenser; a first mounting portion is provided at the internal upper end of the upper fixing member; a second mounting portion is provided at the internal lower end of the lower fixing member; the imaging mirror is mounted on the first mounting portion; the condenser is mounted on the second mounting portion; and the LCD screen is arranged between the imaging mirror and the condenser.

[0006] As a further improvement of the technical solution of the present invention, the LCD screen is used to convert the input digital signal into a visualized image; the condenser concentrates the light emitted from the LCD screen and directs it to the target surface to form a clear projection pattern; the imaging mirror projects the image of the LCD screen through the projection hole.

[0007] As a further improvement of the technical solution of the present invention, the imaging mirror is an aspherical imaging mirror; a first arc-shaped convex imaging portion is provided on one side of the imaging mirror; and a second arc-shaped convex imaging portion is provided on the other side of the imaging mirror.

[0008] As a further improvement of the technical solution of the present invention, the first arc-shaped convex imaging portion abuts against the projection hole; and the radius of the first arc-shaped convex imaging portion is greater than the radius of the second arc-shaped convex imaging portion.

[0009] As a further improvement of the technical solution of the present invention, the condenser is an aspherical condenser; a first arc-shaped convex condenser is provided on one side of the condenser; and a second arc-shaped convex condenser is provided on the other side of the condenser.

[0010] As a further improvement of the technical solution of the present invention, the top of the first arc-shaped convex light-focusing portion is close to the LCD screen; and the radius of the first arc-shaped convex light-focusing portion is smaller than the radius of the second arc-shaped convex light-focusing portion.

[0011] As a further improvement of the technical solution of the present invention, a heat sink is installed at the bottom of the control element.

[0012] As a further improvement of the technical solution of the present invention, the control element is a PCB control board; the PCB control board is electrically connected to the LCD liquid crystal screen.

[0013] As a further improvement of the technical solution of the present invention, a power management module is integrated on the PCB control board.

[0014] The present invention has the following beneficial effects:

[0015] The present invention provides a single-chip LCD dynamic projection lamp, which can realize high-quality dynamic image projection by using only a condenser, an imaging mirror and an LCD screen. The present invention not only simplifies the optical structure in the traditional projection equipment, but also effectively reduces the manufacturing cost, so that the projection equipment can be more easily miniaturized, meeting the market demand for portable and efficient projection equipment. In addition, the present invention also has the advantages of easy integration and maintenance, and provides users with a new type of miniaturized and low-cost projection solution; the projection lamp of the present invention has a projection distance of 300mm and can project clear images. The aspherical design of the imaging mirror and the condenser improves the optical performance, so that the RMS point array radius, MTF and other indicators perform well, ensuring high imaging quality. The advantages of compact design and low cost make the projection lamp suitable for a variety of occasions and show good market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a single-chip LCD dynamic projection lamp according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a top view of a single-chip LCD dynamic projection lamp according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 AA section view;

[0020] Figure 4 This is a schematic diagram of the exploded structure of a single-chip LCD dynamic projection lamp according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the upper fixing member in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of a fixing member according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of an imaging mirror according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of a condenser lens according to an embodiment of the present invention;

[0025] Fig. 9 is a system optical path diagram of an embodiment of the present invention;

[0026] Fig.10 is a resolution curve diagram of an embodiment of the present invention;

[0027] Fig.11 2 is a point array radius diagram of an embodiment of the present invention.

[0028] In the accompanying drawings: 1-upper fixing member; 2-lower fixing member; 3-control element; 4-projection assembly; 5-heat sink; 11-first mounting portion; 12-projection hole; 21-second mounting portion; 41-imaging mirror; 42-LCD screen; 43-condenser; 411-first arc-shaped convex imaging portion; 412-second arc-shaped convex imaging portion; 431-first arc-shaped convex condensing portion; 432-second arc-shaped convex condensing portion. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features; in addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 8 As shown, a single-chip LCD dynamic projection lamp includes an upper fixing member 1, a lower fixing member 2 and a control element 3; wherein: the upper fixing member 1 and the lower fixing member 2 are covered to form a cavity for accommodating a projection component 4; a projection hole 12 is opened on the top of the upper fixing member 1 for the projection component 4 to project an image; the control element 3 is installed at the bottom of the lower fixing member 2; and the control element 3 is electrically connected to the projection component 4.

[0035] Specifically, in this embodiment, the projection assembly 4 includes an imaging mirror 41, an LCD screen 42 and a condenser 43; the upper end of the upper fixing member 1 is provided with a first mounting portion 11; the lower end of the lower fixing member 2 is provided with a second mounting portion 21; the imaging mirror 41 is mounted on the first mounting portion 11; the condenser 43 is mounted on the second mounting portion 21; the LCD screen 42 is arranged between the imaging mirror 41 and the condenser 43. The present invention only needs to use a condenser 43, an imaging mirror 41 and an LCD screen 42 to achieve high-quality dynamic image projection. The present invention not only simplifies the optical structure in the traditional projection equipment, but also effectively reduces the manufacturing cost, so that the projection equipment can be more easily miniaturized, meeting the market demand for portable and efficient projection equipment. In addition, the present invention also has the advantages of easy integration and maintenance, and provides users with a new type of miniaturized and low-cost projection solution.

[0036] Specifically, in this embodiment, the LCD screen 42 is used to convert the input digital signal into a visual image; the condenser 43 concentrates the light emitted from the LCD screen 42 and guides it to the target surface to form a clear projection pattern; the imaging mirror 41 projects the image of the LCD screen 42 through the projection hole 12.

[0037] Specifically, in this embodiment, the imaging mirror 41 is an aspherical imaging mirror; a first arc-shaped convex imaging portion 411 is provided on one side of the imaging mirror 41; and a second arc-shaped convex imaging portion 412 is provided on the other side of the imaging mirror 41.

[0038] Specifically, in this embodiment, the condenser 43 is an aspherical condenser; a first arc-shaped convex condenser 431 is provided on one side of the condenser 43; and a second arc-shaped convex condenser 432 is provided on the other side of the condenser 43. It should be noted that the projection lamp of the present invention has a projection distance of 300 mm and can project a clear image. The aspherical design of the imaging mirror 41 and the condenser improves the optical performance, so that the RMS point array radius, MTF and other indicators perform well, ensuring high imaging quality. The advantages of compact design and low cost make the projection lamp suitable for a variety of occasions and show good market potential.

[0039] It should be noted that both the imaging mirror 41 and the condenser are designed as non-spherical surfaces, which not only improves the optical efficiency but also reduces the volume and weight of the optical system. The unique curved shape of the non-spherical mirror can better control the light and reduce aberration, thereby improving the image quality. During the operation of the projector, the imaging mirror 41 is responsible for projecting the image on the LCD screen, while the condenser is used to focus the light to ensure that the projected image has sufficient brightness.

[0040] The projection lamp of the present invention has a projection distance of 300mm, and can project an image of 300mm*300mm at this distance, meeting the needs of various application scenarios. In terms of optical performance, the key indicators such as RMS point array radius, MTF (modulation transfer function) and relative illumination of the projection lamp perform well, ensuring high definition and uniformity of the projected image.

[0041] Specifically, in this embodiment, the first arc-shaped convex imaging portion 411 abuts against the projection hole 12 ; the radius of the first arc-shaped convex imaging portion 411 is greater than the radius of the second arc-shaped convex imaging portion 412 .

[0042] Specifically, in this embodiment, the top of the first arc-shaped convex light-focusing portion 431 is close to the LCD screen 42 ; the radius of the first arc-shaped convex light-focusing portion 431 is smaller than the radius of the second arc-shaped convex light-focusing portion 432 .

[0043] Specifically, in this embodiment, a heat sink 5 is installed at the bottom of the control element 3 .

[0044] Specifically, in this embodiment, the control element 3 is a PCB control board; the PCB control board is electrically connected to the LCD screen 42. It should be noted that the PCB control board is responsible for driving the LCD screen and controlling the overall operation of the projection lamp, and the addition of the heat sink 5 ensures the stability and reliability of the device during long-term use. Overall, the single-chip LCD dynamic projection lamp of the present invention provides excellent imaging quality while maintaining the advantages of miniaturization and low cost.

[0045] Specifically, in this embodiment, a power management module is integrated on the PCB control board to ensure stable and reliable power supply of the projection lamp under different working conditions.

[0046] Example:

[0047] The present invention provides a specific implementation of a single-chip LCD dynamic projection lamp, which aims to achieve miniaturization and low cost while maintaining excellent imaging quality through an optimized seven-component structure. The functions of each component and their cooperation mechanism will be described in detail below.

[0048] The uppermost component is an upper fixing member 1, which is used to fix the imaging mirror 41 and maintain the structural stability of the entire device. The design of the bracket needs to take into account the requirements of mechanical strength and lightness to ensure that the overall portability is not affected while bearing the weight.

[0049] Component 2 is an imaging mirror 41 located under the upper fixing member 1, which adopts an aspherical design to optimize the light path, reduce aberration and improve image clarity. Compared with traditional spherical lenses, aspherical lenses can better correct spherical aberration and chromatic aberration, thereby obtaining a sharper and clearer image.

[0050] The third component is an LCD screen 42, which is responsible for converting the input digital signal into a visual image. The selection of the LCD screen needs to focus on factors such as response speed, contrast, and color reproduction to ensure that the projected image is vivid and lifelike.

[0051] Below the LCD screen 42 is a quad condenser 43, which also adopts an aspherical design. The function of the condenser is to focus the light emitted from the LCD screen and direct it to the target surface to form a clear projection pattern. The aspherical design not only helps to improve the light gathering efficiency, but also further reduces the scattering and diffraction effects, making the edges of the projected image sharper.

[0052] Component 5 is the lower fixing member 2 installed under the condenser 43, mainly used to support the PCB control board and the heat sink 5, and ensure the stability of the entire device. Its design needs to take into account both mechanical strength and heat dissipation performance to ensure reliability during long-term operation.

[0053] Component six is ​​the PCB control board, which is the brain of the entire projection lamp. It is responsible for processing the input signal from the outside and converting it into a format suitable for LCD screen display. In addition, the PCB board also integrates a power management system to ensure that the power supply of the projection lamp is stable and reliable under different working conditions.

[0054] Component seven is the heat sink 5, which is located at the bottom of the device and is responsible for timely dissipating the heat generated during operation. The design of the heat sink 5 should fully consider the heat conduction efficiency to prevent the internal components from being damaged due to overheating, thereby ensuring the long-term stable operation of the projection lamp.

[0055] In specific implementation, each component needs to be precisely aligned to ensure the accuracy of the light path. The light path diagram is shown in Fig. 9 The resolution is greater than 0.3 at 15 line pairs per millimeter. This resolution can identify the smallest pixel on the LCD screen. The resolution curve is shown in Fig.10 The spot radius in each field of view is less than 24 microns, and the imaging quality is good. The spot radius diagram is shown in Fig.11 .

[0056] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A single-chip LCD dynamic projection lamp, comprising an upper fixing member, a lower fixing member and a control element; characterized in that: The upper fixing member and the lower fixing member are covered to form a cavity for accommodating the projection assembly; a projection hole is provided on the top of the upper fixing member for the projection assembly to project an image; the control element is installed on the bottom of the lower fixing member; and the control element is electrically connected to the projection assembly.

2. The single-chip LCD dynamic projection lamp according to claim 1, characterized in that: The projection assembly includes an imaging mirror, an LCD screen and a condenser; a first mounting portion is provided at the internal upper end of the upper fixing member; a second mounting portion is provided at the internal lower end of the lower fixing member; the imaging mirror is mounted on the first mounting portion; the condenser is mounted on the second mounting portion; the LCD screen is arranged between the imaging mirror and the condenser.

3. The single-chip LCD dynamic projection lamp according to claim 2, characterized in that: The LCD screen is used to convert input digital signals into visual images; the condenser concentrates the light emitted from the LCD screen and guides it to the target surface to form a clear projection pattern; the imaging mirror projects the image of the LCD screen through the projection hole.

4. The single-chip LCD dynamic projection lamp according to claim 2, characterized in that: The imaging mirror is an aspherical imaging mirror; a first arc-shaped convex imaging portion is arranged on one side of the imaging mirror; and a second arc-shaped convex imaging portion is arranged on the other side of the imaging mirror.

5. The single-chip LCD dynamic projection lamp according to claim 4, characterized in that: The first arc-shaped convex imaging portion abuts against the projection hole; the radius of the first arc-shaped convex imaging portion is greater than the radius of the second arc-shaped convex imaging portion.

6. The single-chip LCD dynamic projection lamp according to claim 2, characterized in that: The condenser is an aspherical condenser; a first arc-shaped convex condenser is arranged on one side of the condenser; and a second arc-shaped convex condenser is arranged on the other side of the condenser.

7. The single-chip LCD dynamic projection lamp according to claim 6, characterized in that: The top of the first arc-shaped convex light-focusing portion is close to the LCD screen; the radius of the first arc-shaped convex light-focusing portion is smaller than the radius of the second arc-shaped convex light-focusing portion.

8. The single-chip LCD dynamic projection lamp according to claim 1, characterized in that: A heat sink is installed at the bottom of the control element.

9. A single-chip LCD dynamic projection lamp according to claim 2 or 8, characterized in that: The control element is a PCB control board; the PCB control board is electrically connected to the LCD liquid crystal screen.

10. The single-chip LCD dynamic projection lamp according to claim 9, characterized in that: The PCB control board is integrated with a power management module.

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