Projector

Abstract

The invention relates to a projector. The projector comprises a signal receiving end, a power supply (1), an image receiving module (2) and an image projection lens (3), wherein the image receiving module (2) and the image projection lens (3) are connected with each other; the power supply (1) respectively supplies power to the image receiving module (2) and the image projection lens (3); the signal receiving end is connected with the image receiving module (2); the projector further comprises a control module (4) and a distance sensor (5) connected with the control module (4); the power supply (1) supplies the power to the distance sensor (5) through the control module (4); meanwhile, the control module (4) is connected with the image projection lens (3); the distance sensor (5) is arranged on the surface of the projector; and a distance measuring direction of the distance sensor (5) is consistent to a projection direction of the image projection lens (3). According to the projector disclosed by the invention, the defects of an existing projector are effectively solved, and the automatic control of a projection focal distance of the projector is realized; and the utilization efficiency of the projector is improved and the projector has a great market application value.

Description

technical field [0001] The present invention relates to a projector. Background technique [0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools and entertainment places. According to different working methods, there are different types such as CRT, LCD, DLP, etc. The existing projectors are all based on manual control, such as manually adjusting the lens on the projector. Adjust the focal length of the projector to select the appropriate projection parameters. Manual adjustment will make the use of the projector extremely inconvenient and a waste of time. Moreover, many users now install the projector in a fixed position, such as the ceiling In this way, the lens of the projector must be adjusted in advance, and it will become ext...

AI Technical Summary

Problems solved by technology

Projectors are widely used in homes, offices, schools and entertainment places. According to different working methods, there are different types such as CRT, LCD, DLP, etc. The existing projectors are all based on manual control, such as manually adjusting the lens on the projector. Adjust the focal length of the projector to select the appropriate projection parameters. Manual adjustment will make the use of the projector extremely inconvenient and a waste of time. Moreover, many users now install the projector in a fixed position, such as the ceiling In this way, the lens of the projector must be adjusted in advance, and it will become extremely troublesome when you want to adjust it again later

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