Back projection system applied to device with transparent desktop

Abstract

The invention relates to a back projection system applied to a device with a transparent desktop. The back projection system comprises a projector, a control main machine, a reflection mirror and a back projection film, the control main machine is connected with the projector, the back projection film is arranged at the back surface of the transparent desktop, the reflection mirror is arranged below the back projection film, a projection opening of the projector faces to the reflection mirror, and images projected by the projector are reflected to the back projection film through the reflection mirror. Through the back projection system of the structure, the frames projected by the projector are reflected to the back projection film through the reflection mirror, thus a reflection mirror needs to be arranged below the transparent desktop only so as to effectively reduce requirements of a display on an installation space and the cost of a household touch induction interaction system, and also ensure that display effect is clear, a display size can be freely regulated, energy is saved, environment is protected and an application range is wider.

Description

technical field [0001] The present invention relates to the technical field of projection display, in particular to the technical field of rear projection systems, in particular to a rear projection system applied to a device with a transparent desktop. Background technique [0002] In the field of digital furniture, touch solutions for glass such as desktops, tea tables, counters, display racks, and showcases generally use a traditional capacitive touch screen structure under the glass. [0003] The traditional capacitive touch screen structure includes a transparent touch-sensing film, with silver wires leading out from the edge and connected to the FPC lead-out wire of the glass interface, and then connected to the computer host through the control chip part. [0004] However, because the above-mentioned glass touch solution uses a traditional capacitive touch module, and due to technical limitations such as the range of sensing sensitivity, 8-10mm thick glass such as des...

AI Technical Summary

Problems solved by technology

[0006] However, when such a touch-sensitive film is installed on a household glass desktop or coffee table to form a household touch-sensitive interactive system, it is still necessary to additionally be equipped with a display device arranged under the desktop, which undoubtedly increases the cost of the household touch-sensitive interactive system.

At the same time, the limited space under the household glass tabletop or coffee table puts forward strict requirements on the size of the display device. Equipping a small-volume high-definition display further increases the overall cost of the system, which is not conducive to energy conservation and environmental protection.

The above shortcomings restrict the application of touch-sensitive films in household touch-sensitive interactive systems

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