Patent ID: 8123367
Filing Date: 2012-02-28
Classification: H04N

Abstract:
1. An image display apparatus comprising: a first light-emitting unit configured to emit a first laser light; a second light-emitting unit configured to emit a second laser light having a wavelength different from a wavelength of said first laser light; a reflecting unit disposed to reflect said first laser light and said second laser light; an input unit configured to accept an input performed on said image display apparatus; an adjusting unit configured to adjust, based on said input, a projection direction of the light reflected by said reflecting unit or a size or shape of a projection surface; and a control unit configured to control amounts of the light emission from said first light-emitting unit and said second light-emitting unit, based on an operation for adjusting said projection direction of the light, wherein said adjusting unit includes an optical path adjusting unit configured to make an optical path of said first laser light substantially parallel to an optical path of said second laser light, said control unit is configured to control said amounts of the light emission based on drive of said optical path adjusting unit, and said optical path adjusting unit includes: a lens; a beam splitter to split said first laser light and said second laser light transmitted through said lens; a hologram element disposed to receive laser light split by said beam splitter; and a detector configured to detect the light transmitted through said hologram element.