Patent ID: 8899747

Claim:
A stereovision optometry apparatus comprising: a 3D display unit for displaying a 3D image; a reference 2D display unit for displaying a reference 2D image; an eyepiece arranged opposite the reference 2D display unit and configured to view the 3D image and the reference 2D image; a reflective mirror arranged opposite the 3D display unit and configured to move toward and away from the 3D display unit; and a half mirror arranged between the 3D display unit and the reflective mirror and disposed at a point where a propagation path of the reference 2D image and a propagation path of the 3D image intersect; wherein the 2D image from the reference 2D display unit penetrates through the half mirror and then reaches the eyepiece; and wherein the 3D image from the 3D display unit penetrates the half mirror and then is reflected on the reflective mirror, and the reflected image is reflected on the half mirror and reaches the eyepiece.