CN218585163U - A double reflective LCD projector - Google Patents

Abstract

The utility model discloses a double-reflection LCD projector, in which a turbo fan is electrically connected with an external power supply, and the light emitted by the light source is reflected by the reflective mirror of the lower light source and collected by an integrated light-concentrating cup and a heat-insulating polarizing filter to form polarization. After filtering out the infrared light, it goes to the first film lens, and forms multiple beams of parallel light through the first film lens. The multiple beams of parallel light generate images after passing through the LCD, focus after passing through the second film lens, and pass through the upper imaging reflector After reflection, it finally reaches the lens, and finally forms an image through the lens to the screen through the upper imaging reflector and the lower light source reflector in the optical path system to form a double-reflective optical system, which effectively changes the optical path structure and solves the problem of single structure of traditional projectors in the prior art. The problems of bulky size and low space utilization make the structure of the product equipped with this double-reflection optical system more compact.

Description

A double reflective LCD projector

technical field

The utility model belongs to the related technical field of projectors, in particular to a double-reflection LCD projector.

Background technique

A projector, also known as a projector, is a device that projects images or video onto a screen for display, and is widely used in homes, offices, schools, or movie theaters.

The optical system of existing double-reflection LCD projector and the technology of double-reflection LCD projector have the following problems: the optical system of existing double-reflection LCD projector and the optical system of double-reflection LCD projector mostly adopt reflective cup to emit light The light is collected into the liquid crystal display (LCD), and then the projection beam is formed through the liquid crystal display (LCD) and the lens. The use of reflectors makes the entire system larger in size, low in space utilization, and inconvenient to install, which is not conducive to the miniaturization design of the projector. , batch and large-scale production.

Utility model content

The purpose of this utility model is to provide a double-reflection LCD projector, to solve the optical system of the existing double-reflection LCD projector proposed in the above-mentioned background technology and most of the double-reflection LCD projectors use reflective cups to emit light. The light is collected into the liquid crystal display (LCD), and then the projection beam is formed through the liquid crystal display (LCD) and the lens. The use of reflectors makes the entire system larger in size, low in space utilization, and inconvenient to install, which is not conducive to the miniaturization design of the projector. , batch and large-scale production issues.

In order to achieve the above object, the utility model provides the following technical solutions: a double-reflection LCD projector, including an upper imaging mirror, a turbo fan is arranged at the left end of the upper imaging mirror, and the left end of the turbo fan is An air inlet is provided at the upper imaging mirror, a projection lens is provided at the right end of the upper imaging mirror, a second film lens is provided at the lower end of the projection lens, and an LCD is provided at the lower end of the second film lens. , the lower end of the LCD is provided with a first film lens, the lower end of the first film lens is provided with a heat-insulating polarizing filter, the lower end of the air inlet is provided with a light source, and the light source is An integrated focusing cup is arranged at the lower end, and a lower light source reflector is arranged at the right end of the integrated focusing cup. The first film lens can make the light beams passing through it form parallel light, and the LCD can convert the light beams passing through it into parallel light. A beam of parallel light produces a beam with image information. The second film lens can focus the beam with image information that will pass through it. The upper imaging mirror can reflect the focused light, and the projection lens will pass through its reflection. The final light is projected onto the screen for imaging. The turbofan can actively dissipate heat from the core optical system. The turbofan guides the airflow through the air intake. The air intake is equipped with a HEPA air filter to prevent dust from being inhaled by the turbofan, thereby preventing Dust enters into the optical system, and the turbofan is electrically connected with an external power supply.

Preferably, the first film lens can make the light beam passing through it form parallel light.

Preferably, the LCD can generate a beam of image information from multiple beams of parallel light passing through it.

Preferably, the second film lens can focus the light beam with image information passing through it.

Preferably, the upper imaging mirror can reflect the focused light.

Preferably, the projection lens projects the reflected light onto the screen for imaging.

Preferably, the turbofan can actively dissipate heat from the core optical system, and the turbofan guides the airflow through the air intake.

Preferably, a HEPA air filter core is installed in the air inlet to prevent dust from being sucked by the turbo fan, thereby preventing dust from entering the optical system.

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model is provided with a projection lens at the right end position of the upper imaging mirror, a second film lens is arranged at the lower end position of the projection lens, an LCD is arranged at the lower end position of the second film lens, and an LCD is arranged at the lower end position of the LCD. A first film lens is provided, and a heat-insulating polarizing filter is provided at the lower end of the first film lens. The right end of the optical cup is provided with a lower light source reflector, because the optical system of the existing double-reflective LCD projector and the double-reflective LCD projector mostly use a reflective cup to gather the light emitted by the light source into the liquid crystal display (LCD) , and then form a projection beam through a liquid crystal display (LCD) and a lens. The use of a reflector makes the entire system larger in size, low in space utilization, and inconvenient to install, which is not conducive to the miniaturization design, batch and large-scale production of the projector. After improvement , the light emitted by the light source is reflected by the lower light source reflector and collected by the integrated condenser and the heat-insulating polarizing filter to form polarized light and filter out infrared light to the first film lens, through which multiple parallel beams are formed Light, the multi-beams of parallel light generate images after passing through the LCD, focus after passing through the second film lens, reflect on the upper imaging mirror, and finally reach the lens, and finally image the image to the designated area through the lens. After improvement, the existing technology is effectively solved. Traditional projectors have problems such as single structure, large volume, and low space utilization, which make the product structure equipped with this double-reflection optical system more compact and compact, and the product shape is flexible and changeable.

2. The utility model is provided with a turbo fan at the left end position of the upper imaging mirror, and an air inlet is provided at the left end position of the turbo fan, because the optical system of the existing double-reflection LCD projector and the double-reflection LCD Most projectors have poor heat dissipation and dust isolation effects. After improvement, the turbo fan can actively dissipate heat from the core optical system. Inhalation to prevent dust from entering the optical system. By adding a turbo fan and an air inlet with a HEPA air filter, the optical system of the double-reflection LCD projector and the interior of the double-reflection LCD projector can be cooled and dust isolated. Therefore, the optical system of the existing double-reflection LCD projector and the performance and service life of the double-reflection LCD projector are effectively increased.

Description of drawings

Fig. 1 is the overall schematic diagram of the optical system of the double-reflection LCD projector of the present invention and the structure of the double-reflection LCD projector;

Fig. 2 is the optical system of the double-reflection LCD projector of the present invention and the structural schematic diagram of the working principle of the double-reflection LCD projector;

In the figure: 1. Light source; 2. Integrated condenser cup; 3. Lower light source reflector; 4. First film lens; 5. Thermal insulation polarizing filter; 6. LCD; 7. Second film lens; 8. Upper imaging mirror; 9, projection lens; 10, turbo fan; 11, air inlet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-2, the utility model provides a kind of technical solution: a kind of double-reflection LCD projector, comprises upper imaging mirror 8, and the left end position of upper imaging mirror 8 is provided with turbofan 10, turbofan 10 An air inlet 11 is provided at the left end position of the upper imaging mirror 8, a projection lens 9 is provided at the right end position of the upper imaging mirror 8, a second film lens 7 is provided at the lower end position of the projection lens 9, and a second film lens 7 is provided at the lower end position of the second film lens 7. An LCD 6 is provided, a first film lens 4 is provided at the lower end of the LCD 6, a heat-insulating polarizing filter 5 is provided at the lower end of the first film lens 4, a light source 1 is provided at the lower end of the air inlet 11, and the light source 1 An integrated focusing cup 2 is arranged at the lower end position of the integrated focusing cup 2, and a lower light source reflector 3 is arranged at the right end position of the integrated focusing cup 2.

The first film lens 4 can make the light beam passing through it form parallel light, and the LCD6 can generate a light beam with image information from the multiple beams of parallel light passing through it, and the second film lens 7 can pass through it. For focusing, the upper imaging mirror 8 can reflect the focused light, and the projection lens 9 projects the reflected light to the screen for imaging.

During work, because the optical system of existing double-reflective LCD projector and double-reflective LCD projector mostly adopt reflective cup to gather the light that light source 1 sends into liquid crystal display (LCD6), then pass through liquid crystal display (LCD6), The projection beam is formed by the lens, and the reflective cup makes the whole system larger in size, low in space utilization, and inconvenient to install, which is not conducive to the miniaturization design, batch and large-scale production of the projector. After improvement, the light emitted by light source 1 passes through the lower light source The reflective mirror 3 reflects and collects through the integrated condenser cup 2 and the heat-insulating polarizing filter 5 forms polarized light and filters out the infrared light to the first film lens 4, through which multiple beams of parallel light are formed. Multiple beams of parallel light generate an image after passing through the LCD 6, focus after passing through the second film lens 7, and finally reach the lens after being reflected by the upper imaging mirror 8, and finally image the image to a designated area through the lens, which effectively solves the problem in the prior art after improvement Traditional projectors have problems such as single structure, large volume, and low space utilization, which make the product structure equipped with this double-reflection optical system more compact and compact, and the product shape is flexible and changeable.

The turbofan 10 can actively dissipate heat from the core optical system. The turbofan 10 guides the airflow through the air inlet 11. The air inlet 11 is equipped with a HEPA air filter core to prevent dust from being sucked by the turbofan 10, thereby preventing dust from entering the optical system.

When working, because the optical system of the existing double-reflection LCD projector and most of the double-reflection LCD projectors have poor heat dissipation and dust isolation effects, after improvement, the turbofan 10 can actively dissipate heat from the core optical system, and the turbofan 10 guides the airflow through the air inlet 11, and the air inlet 11 is equipped with a HEPA air filter element to prevent dust from being inhaled by the turbofan 10, thereby preventing dust from entering the optical system. By adding the turbofan 10 and the HEPA air filter element The air inlet 11 can dissipate heat and isolate dust from the optical system of the double-reflection LCD projector and the interior of the double-reflection LCD projector, thereby effectively increasing the optical system and double-reflection of the existing double-reflection LCD projector. The performance and lifespan of LCD projectors.

Working principle and usage process of the utility model: After the utility model is installed, the user connects a double-reflection LCD projector with an external power supply, because the optical system and double-reflection LCD projector of the existing Most of the LCD projectors use reflective cups to gather the light emitted by the light source 1 into the liquid crystal display (LCD6), and then form a projection beam through the liquid crystal display (LCD6) and the lens. The use of reflective cups makes the entire system larger in size and low in space utilization. , the installation is inconvenient, which is not conducive to the miniaturization design, batch and large-scale production of the projector. After the improvement, the light emitted by the light source 1 is reflected by the lower light source reflector 3 and gathered by the integrated condenser cup 2 and the heat-insulating polarizing filter 5 After forming polarized light and filtering infrared light, it goes to the first film lens 4, through which multiple beams of parallel light are formed, and the multiple beams of parallel light pass through the LCD 6 to generate an image, and then focus after passing through the second film lens 7, After being reflected by the upper imaging reflector 8, it finally reaches the lens, and finally forms an image to the designated area through the lens. On the basis of the backlight, polarizer, LCD6, film lens and projection lens 9 of the traditional projector optical system, the following is added. The light source reflective lens 3 and the upper imaging reflective lens 8 change the direction of the optical path in the optical system through two sets of reflective lenses, greatly shorten the overall length of the entire optical system, make full use of the mechanism blind area in the traditional optical path system, and both sets of lenses are used before Surface-coated mirrors can reflect light to the maximum to eliminate ghosting. After improvement, the problems of traditional projectors such as single structure, bulky volume, and low space utilization in the prior art are effectively solved. Products equipped with this double-reflection optical system The mechanism is more compact and small, and the product shape is flexible and changeable. The optical system of the existing double-reflection LCD projector and most of the double-reflection LCD projectors have poor heat dissipation and dust isolation effects. After improvement, the turbofan 10 can core optical The system actively dissipates heat, and the turbofan 10 guides the airflow through the air inlet 11. The air inlet 11 is equipped with a HEPA air filter element to prevent dust from being sucked by the turbofan 10, thereby preventing dust from entering the optical system. By adding the turbofan 10 and The air inlet 11 with the HEPA air filter core can dissipate heat and isolate dust from the optical system of the double-reflection LCD projector and the interior of the double-reflection LCD projector, thereby effectively increasing the existing double-reflection LCD projection. The optical system of the instrument and the performance and life of the double reflection LCD projector.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (7)

1. a kind of double-reflection LCD projector, comprise last imaging mirror (8), it is characterized in that: the left end position place of described last imaging mirror (8) is provided with turbofan (10), described turbofan ( 10) is provided with an air inlet (11) at the left end position, a projection lens (9) is provided at the right end position of the upper imaging mirror (8), and a second projection lens (9) is provided at the lower end position of the projection lens (9). Two film lenses (7), the lower end position of the second film lens (7) is provided with an LCD (6), the lower end position of the LCD (6) is provided with a first film lens (4), and the second film lens (7) is provided with a first film lens (4). A thermal insulation polarizing filter (5) is arranged at the lower end position of a film lens (4), a light source (1) is arranged at the lower end position of the air inlet (11), and a light source (1) is arranged at the lower end position of the light source (1). An integrated focusing cup (2) is provided, and a lower light source reflector (3) is arranged at the right end of the integrated focusing cup (2), and the turbofan (10) is electrically connected to an external power supply. 2. A double-reflection LCD projector according to claim 1, characterized in that: the first film lens (4) can make the light beam passing through it form parallel light. 3. A double-reflection LCD projector according to claim 1, characterized in that: said LCD (6) can generate beams with image information from multiple beams of parallel light passing through it. 4. A double-reflection LCD projector according to claim 1, characterized in that: the second film lens (7) can focus the light beam with image information passing through it. 5 . The double-reflection LCD projector according to claim 1 , wherein the projection lens ( 9 ) projects the light reflected by it onto the screen for imaging. 6 . 6. The double-reflection LCD projector according to claim 1, characterized in that: the turbofan (10) can actively dissipate heat from the core optical system, and the turbofan (10) passes through the air inlet (11) ) to guide the airflow. 7. A kind of double-reflection LCD projector according to claim 1, characterized in that: a HEPA air filter core is housed in the air inlet (11) to prevent dust from being sucked by the turbo fan (10), thereby preventing Dust has entered the optical system.

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