Bildprojektor

Details

Veröffentlichungs-Nr.

EP2501135

Aktenzeichen

EP12158858

Anmeldetag

9. März 2012

Veröffentlichung

12. Juni 2019

Erteilung

12. Juni 2019

Rechtsraum

EP

IPC

H04N9/31G03B21/14// G03B21/28

Abstract

An image projection apparatus (1) includes: an optical image generating unit (10) to generate an optical image based on image data; a projection surface (101); a projection optical system (3) including a plurality of optical elements and configured to form an projected image, onto a projection surface (101), coupled with the optical image generated by the optical image generating unit (10); a projected image shifting unit (41, 42) to shift the projected image by changing a posture of at least one of the plurality of optical elements included in the projection optical system (3); a tilt sensor (55) to detect a posture of the optical element of which posture is changed by the projected image shifting unit (41, 42); and a trapezoidal distortion correction unit (53, 53b) to correct the optical image generated by the optical image generating unit (10) so as to prevent the trapezoidal distortion of the projected image from occurring based on the detection result of the tilt sensor (55).

Anmelder

Firmen

Ricoh Company, Ltd.
Ricoh Company Ltd.

Land

🇯🇵 Japan

Fachgebiete