Optical Projection Imaging System and Method

An optical projection imaging system, comprising:

• an image source controller, a projection screen, an angle controller and a Light Emitting Diode (LED) display;
• the LED display comprising:
• a plurality of LED display components, each of the LED display components comprising:
• an LED chip and an angle control structure arranged above the LED chip;
• the angle controller, configured to send at least two different angle control signals to the LED display every preset time period to control the LED display to be in at least two different display modes;
• the image source controller, configured to send at least two different image signals to the LED display, wherein the LED display in the different display modes corresponds to different image signals;
• the angle control structure, configured to receive at least two different angle control signals sent by the angle controller, and to respectively perform modulation of different angle directions on an emitting main light direction of each of the LED chips in the LED display, the modulation of the different angle directions corresponding to directions in which the at least two different image signals are projected;
• and
• the projection screen, configured to receive an image corresponding to the emitting main light modulated by the angle control structure to obtain a projection image.