公开(公告)号：EP2709366A2

公开(公告)日：2014-03-19

申请号：EP13179310.1

申请日：2013-08-05

Applicant: Hitachi Media Electronics Co., Ltd.

Inventor： Kusaka, Hiromi ,  Seo, Yoshiho ,  Ouchi, Satoshi ,  Hatagi, Michio

IPC: H04N9/31 ,  G02B3/02

CPC classification number: H04N9/3129 ,  G02B5/04 ,  G02B26/101 ,  G02B26/105 ,  G02B27/09 ,  G02B27/0966 ,  G02B27/0972 ,  G03B21/2033 ,  G03B21/208

Abstract: A scanning type projector (100) two-dimensionally projecting a laser beam and generating an image according to the present invention comprises: a light source (101, 102, 103) having a light intensity corresponding to a pixel of the image and emitting a laser beam having an elliptical beam; a collimator lens (104, 105, 106) collimating a laser beam emitted from the light source (101, 102, 103) without converting the same into focused light; a beam contracting/shaping element (109) that reduces a luminous beam width in a predetermined direction of the laser beam emitted from the collimator lens (104, 105, 106); a condensing lens (110) that converts a laser beam emitted from the beam contracting/shaping element (109) into focused light corresponding to a projection distance (R); and a two-dimensional scanning unit (111) configured to two-dimensionally scan and project a laser beam emitted from the condensing lens (110).