Canon Kabushiki Kaisha

Ryuichi Sakaguchi

Keiichiro Ishihara

Shuichi Kobayashi

A scanning image display apparatus includes: a scanning unit rotating a mirror to scan a light flux from a light source; an input unit to input a display condition of an image; and a controller changing a rotation angle of the mirror in the scanning unit in accordance with a signal from the input unit. According to the scanning image display apparatus, the display condition (e.g., size, aspect ratio) of the image can be changed without using trimming.

Scanning image display apparatus

A displaying optical system is disclosed, which is capable of reducing a speckle noise. The displaying optical system comprises a light source emitting coherent light, a scanning device scanning the light, a first optical system causing the light from the scanning device to form an intermediate image, a second optical system causing the light from the intermediate image to form an image on a real display surface, and an optical element arranged between the first and second optical systems. The optical element widens the divergence angle of the light emerged from the optical element toward the second optical system more than the incident angle of the light on the optical element from the first optical system.

Displaying optical system and image projection apparatus

A compact displaying optical system capable of reducing a speckle noise and a loss of light amount is disclosed. The displaying optical system comprises a light source which emits coherent light, and a polarization control element which has a first area and a second area where light components of the light enter, respectively. The polarization control element makes the polarization state of the light component entering the first area different from that of the light component entering the second area.

A compact displaying optical system capable of reducing a speckle noise and a loss of light amount is disclosed. The displaying optical system which projects images using coherent light, comprises a light source which emits the light; and a polarization control unit. The polarization control unit changes the polarization state of the light emitted from the light source temporally.

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Machida, Japan

Ryuichi Sakaguchi