Video projection device
AssigneeHitachi Maxell, Ltd.
InventorsShoji YAMAMOTO, Yoshiho SEO, Koji HIRATA, Hiroyuki URATA, Takashi MATSUBARA
Life of this patent
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Abstract
Provided is an image projection device that carries out high precision gesture detection. An image projection device has a projection unit that optically projects image and a gesture detection unit that detects human gestures and generates a signal for operating the projected image on the basis of the detection results. The gesture detection unit controls a range for detecting gesture according to the direction that the projection unit projects light and/or the placement state of the image projection device. The device has a laser light source and photodiode for detecting gestures, or has a pyroelectric sensor for detecting infrared rays.
Claims15
An image projection device which projects light having image information and displays an image, the image projection device comprising:
- a projection unit comprising:
- a light source unit which generates light;
- a light control unit which generates an optical image based on the image information using the light generated by the light source unit;
- and
- a projection optical unit which projects the optical image generated by the light control unit;
- and
- a gesture detection unit comprising:
- a detection element which comprises a sensor that detects a gesture of an operator of the image projection device;
- and
- an operating signal generating unit which generates an operating signal for operating an image signal associated with the image information based on the gesture detected by the detection element.
Dependencies are inferred from the claim text.