Eyeball tracking system of near-to-eye display equipment and near-to-eye display equipment

Abstract

The invention discloses an eyeball tracking system of near-to-eye display equipment and near-to-eye display equipment. The eyeball tracking system comprises a processor for outputting a video signal,a control analysis device, and an LED lightning device. The control analysis device is used for obtaining a multi-color image signal comprising an IR image signal, an LED synchronization signal and acorresponding sub-field display signal according to a video signal and a preset IR image signal, generating an acquisition signal when the LED synchronization signal and the sub-field display signal correspond to the IR image signal, and obtaining human eye fixation point information according to an eyeball image acquired by an IR camera according to the acquisition signal. The LED lighting deviceis used for lighting a corresponding LED according to the LED synchronization signal and enabling the emergent light of the LED to enter a DMD display device and comprises an IR LED arranged in an optical machine; the DMD display device is used for reflecting light into the lens according to a sub-field display signal to form an image with a corresponding color and projecting the image to human eyes through an optical waveguide lens. Therefore, the size and cost of the whole machine can be reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of near-eye display, and in particular, to an eye tracking system of a near-eye display device and a near-eye display device. Background technique [0002] DLP is digital light processing technology, which uses the integration of micro-lens arrays on semiconductor chips, and at the same time uses MEMS technology to control the rotation of each micro-lens. These micro-mirrors can change the angle rapidly under the control of digital drive signals, and once the corresponding signals are received, the micro-mirrors will tilt by 10°, thereby changing the reflection direction of incident light. A micromirror in the projected state is shown as "on" and tilted by +10° with the digital signal; if the micromirror is in the non-projected state, it is shown as "off" and tilted by -10°. At the same time, the incident light reflected on the "on" state projects the image onto the screen through the ...

AI Technical Summary

Problems solved by technology

Because head-mounted devices such as VR or AR have a small space at the human eye, placing an IR camera brings great difficulty to engineering implementation, and may lead to a larger volume of the whole machine and higher costs.

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