| 摘要 |
<p>An indirect ophthalmoscope (10) is designed to provide a properly oriented stereoscopic image of the retina or vitreous of an eye from an inverted image produced by a condensing lens. The ophthalmoscope re-orients the inverted indirect image in the vertical direction using a primary image inverting assembly (55) including two primary reflecting surfaces (56 and 57) mounted at right angles for each one of right and left indirect images. The inverted indirect image is re-oriented in the horizontal direction using a secondary image flipping assembly (62) including two secondary reflecting surfaces (63 and 64) mounted in a trapezoidal relation for each of the left and right images. The secondary image flipping assembly also splits the images, re-directing the left and right indirect images to right and left eyepieces, respectively, of the ophthalmoscope to provide a true stereoscopic image.</p> |
