Ultra-short-focal-distance laser projection TV with adjustable suspension angle

Abstract

The invention discloses an ultra-short-focal-distance laser projection TV with an adjustable suspension angle, and the projection TV comprises an ultra-short-focal-distance laser projection TV base body. The exterior of the ultra-short-focal-distance laser projection TV base body is provided with a laser projection TV screen suspension support with the adjustable suspension angle, and a lens focusing adjustment device is provided with a focus adjustment structure. The focus adjustment structure comprises a first transmission gear; a first transmission gear support base; a second transmission gear; a first shaft support; a third transmission gear; a second shaft support; a rotating shaft and a transmission shaft. The first transmission gear is engaged with the second transmission gear, andthe focusing adjustment device of the laser projection TV is engaged with the third transmission gear. Moreover, the first transmission gear is provided with a fixing groove for fixing a focusing adjustment handle of a lens. According to the invention, the laser projection TV guarantees that the quality of a projection picture of the ultra-short-focal-distance laser projection TV can be optimal, and enables the focusing adjustment region to be expanded.

Description

technical field [0001] The invention belongs to a laser projection television, and in particular relates to an ultra-short-focus laser projection television with an adjustable suspension angle. Background technique [0002] Laser projection TV is a new laser image reproduction technology, which makes full use of the advantages of laser itself. In the way of light propagation, laser light sources are fundamentally different from traditional incandescent lamps and halide lamps: ordinary incandescent lamps and halide lamps emit light in all directions, while lasers gather all the light in a parallel in the beam. In addition, laser projection TVs can express a larger range of colors than traditional projection TVs, providing clearer images. [0003] Although laser projection TV technology has achieved great technological development and innovation, the adjustment working surface and position of the focus adjuster of the ultra-short-focus laser projection TVs currently on the m...

AI Technical Summary

Problems solved by technology

[0003] Although laser projection TV technology has achieved great technological development and innovation, the adjustment working surface and position of the focus adjuster of the ultra-short-focus laser projection TVs currently on the market are restricted by the working surface and position of the focus adjustment handle on the lens, that is, the focus The adjustment working surface of the adjuster is generally perpendicular to the optical axis, and its position is generally near the focus adjustment handle of the lens, so the appearance design of the whole machine is also restricted to a certain extent; Suspension problem: The screen suspension brackets of laser projection TVs currently on the market can only simply fix the screen. Although some of the brackets can adjust the suspension height of the screen, it is generally impossible to adjust the suspension angle of the screen, and because the screen suspension The size of the bracket is large and the assembly process is simple, so it is difficult to guarantee the angle of the screen after the screen is hung only by the processing accuracy - the horizontality and verticality meet the requirements

However, most of the laser projection TVs currently on the market are ultra-short-focus, and they have high requirements for the screen hanging angle. This is because the screen hanging angle will have a great impact on the projection quality. Misalignment can cause the projected image to become non-rectangular and can cause poor focus

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