The optical design of an electronic eyepiece on a 3D microscope system

Abstract

This study proposes to apply both a biprism and a Double Gauss Lens to an electronic eyepiece through which a single image could be divided into an image pair with left/right angle of view. A biprism with the corner angle 9°is added to the parallel ray path of a symmetric Double Gauss Lens to achieve the image splitting property with the deflection principle of prism. When the biprism is placed at 17 mm of the Double Gauss Lens, the calculated estimated distance Z is 60.050 mm, the best disparity is 0.458 mm, and the image depth is 0.724 mm to generate an image with depth perception. Different from the high cost for a traditional microscope requiring two cameras, the left/right stereo image pair could be acquired with one shot when equipping a stereo electronic eyepiece on a microscope. It not only could reduce the size and weight of the optical element, but could also generate a stereo image with depth perception.