VIDEO PROJECTION DEVICE
First Claim
Patent Images
1. A video projection device comprising:
- a video display element displaying a video by an electrical video signal;
a projection lens projecting on a screen the video displayed on the video display element;
a converter lens attachably and detachably provided for the projection lens; and
a video processing part outputting different video signals to the video display element in accordance with whether or not the converter lens is attached.
1 Assignment
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Abstract
A video projection device includes: a video display element, a projection lens, a converter lens, and a video processing part. The video display element displays a video by an electrical video signal. The projection lens projects on a screen the video displayed on the video display element. The converter lens is attachably and detachably provided for the projection lens. The video processing part outputs different video signals to the video display element in accordance with whether or not the converter lens is attached.
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Citations
16 Claims
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1. A video projection device comprising:
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a video display element displaying a video by an electrical video signal; a projection lens projecting on a screen the video displayed on the video display element; a converter lens attachably and detachably provided for the projection lens; and a video processing part outputting different video signals to the video display element in accordance with whether or not the converter lens is attached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A video projection method comprising:
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a display step of displaying a video on a video display element by an electrical video signal; a projection step of projecting, on a screen by a projection lens, the video displayed on the video display element; a attaching step of attaching a converter lens in front of the projection lens; a judging step of judging whether or not the converter lens has been attached to the projection lens; and a signal output step of switching a video signal to the video display element in accordance with whether or not the converter lens has been attached to the projection lens. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification