公开(公告)号：US20190268563A1

公开(公告)日：2019-08-29

申请号：US16054171

申请日：2018-08-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zhongyan SHENG ,  Gavin Camillo PERRELLA

IPC: H04N5/74 ,  G02B26/08 ,  G09G3/34

Abstract: A projector includes a semiconductor die including a digital micromirror device; and a first integral optical layer attached to the semiconductor die. The first integral optical layer includes a first optical lens and a first diffractive optical element. A second integral optical layer is attached to the first integral optical layer. The second integral optical layer includes an aperture stop and a second diffractive optical element. A third integral optical layer is attached to the second integral optical layer. The third integral optical layer includes a second optical lens and a light source mount. The semiconductor die, the first integral optical layer, the second integral optical layer and the third integral optical layer are stacked to form an optical path through the first and second diffractive optical elements, reflect off the digital micromirror device, and pass through the first optical lens, the aperture stop and the second lens.