| 摘要 |
A distortion identification method which produces an undistorted rectilinear cross grid pattern for comparison with any distortion and curvature of field in a display system. An undistorted rectilinear grid, representing an infocus view of the display where an observer's eye would normally be in a display system, is positioned to be optically projected by a collimating lens and the optical element back to the display focal surface. A curved cross grid pattern of the rectilinear grid is laid on a glass substrate, which is form fitted to the display focal surface, by projection photolithography. The curved cross grid pattern indicates the shape of the focal surface required to present a high resolution display emanating therefrom which is in-focus to an observer viewing the display.
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