Patent Document ID: 10044995
Application ID: 15390437
Patent Status: 1

Claim One:
1. A projection apparatus, comprising: a projection light source assembly, a digital micro mirror device (DMD) assembly and a screen, wherein the apparatus further comprises: an ultra short-focus lens, wherein the ultra short-focus lens comprises an optic set and a reflector; the optic set is configured to receive a light beam emitted from the DMD assembly, and transmit the light beam onto the reflector; the reflector is configured to reflect the light beam transmitted from the optic set onto the screen; wherein the reflector is provided with a plurality of brightness sensors on a side away from the screen, the brightness sensors are configured to acquire a real-time brightness value of at least one sub-image in a current to-be-displayed image; wherein the projection apparatus is configured to adjust image brightness, and a brightness adjusting value corresponding to each sub-image in the current to-be-displayed image is determined according to the real-time brightness value.