Patent ID: 9121987
Filing Date: 2015-09-01
Classification: G02B,H04N

Abstract:
1. A display device comprising: a light source configured to generate a light beam being coherent and having a diameter that incorporates all of the light from the light source; an optical plate including a plurality of microlenses arranged with a period larger than the diameter of the light beam, the optical plate being configured to control a divergence angle of the light beam; a scanning section configured to scan the light beam in a surface of the optical plate; and a controller connected to synchronize the light source with the scanning section, the plurality of microlenses including a first microlens and a second microlens adjacent to the first microlens, the light beam being configured to pass the first microlens and not to pass the second microlens in a first period of time, the light beam being configured to pass the second microlens and not to pass the first microlens in a second period of time, and the light source being configured not to generate the light beam in a period of time between the first period of time and the second period of time.