Angle detecting apparatus and projector having the same
作者： Shiroshi Kanemitsu , Hirobumi Okuyama
DOI:
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摘要: A control circuit computes relative horizontal and vertical inclination angles between a screen projector by line-type passive range-finding device. display driving section adjusts projection optical system including condensing lens on the basis of computed circuit, thereby correcting for keystone distortion in an image projected.
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