作者: Walter Joseph Gorkiewicz , John A Van Raalte
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摘要: Unmodulated, collimated white light is angularly directed to a target reflecting surface which deformable represent subject, and the subject-modulated reflected from viewing screen by Schlieren optical system including projection lens stop at focal point of lens. A first prism located between subject-bearing render orthogonal principal plane screen. second its effect color correction surface.