Abstract: An optical unlocking device for identifying user operation through optical projection and acquisition so as to unlock a device or a program, and the unlocking device specifically includes a software algorithm module, a hardware module and a valid operation area. The hardware module includes an optical emission module, an image acquiring module and a processor. Unlocking method includes the following steps: firstly, acquiring and analyzing user operation data; secondly, extracting the characteristic data information about the area of interest; and making a judgment on unlocking or status switchover by comparing the characteristic data.

Abstract: An optical projection keyboard and mouse includes an optical projection hardware module for generating an optical projection keyboard zone and an optical projection mouse zone; an optical projection keyboard zone for achieving the functions of the keyboard; an optical projection mouse zone for achieving the functions of the mouse. The design scheme set forth is characterized by easy carrying, long service life, independent operation and capability of being embedded into other devices.

Abstract: An optical projection computer mainly includes a micro-projection module for displaying the content of the computer; a Mini PC module for integrating the relevant functions of the computer; an optical projection keyboard/mouse module for generating an optical keyboard zone or an optical mouse zone; the optical projection keyboard/mouse module, Mini PC module and micro-projection module are connected successively. With the design scheme set forth, the optical projection computer will have the features of low weight, small size and favorable portability.