| 摘要 |
<p>A retinoscope is provided with a hinged light filter carrier assembly (28) for slidably positioning first and second polarizing filters (60,62) in the light transmission and viewing paths (20,24). A single actuating lever (64) is provided to move the filter members into and to retract them out of the light paths. The carrier assembly is a unitary frame member (32) with a back portion (34,36,38) and a lower portion (52, 54) which slide in respective pairs of grooves (56-59) in the retinoscope housing (12) and are mechanically synchronized by a pair of struts (44,46) joined by living hinges (40,42,48,50) to the frame members. <IMAGE></p> |
