| 摘要 |
<p>A lens mounting for enabling rapid changes of lenses wherein a lens carrying structure (48) is arranged to be detachably secured to an apertured support structure (25, 30) by virtue of lugs (50) provided on the lens carrying structure (48) engaging between a planar, annular, spring element (32) and a rigid portion or portions (54) of the support structure (25, 30). Owing to the resilience of at least a portion (56) of the spring element (32), the latter biases the lugs (50) against said rigid portions (54), thereby securing the two structures together. In the preferred embodiment, the rigid portions (54) are inwardly extending lugs of a mounting plate (30) engaging with outwardly extending lugs (50) of the lens carrying structure (48). In another embodiment, the spring element (32) and mounting plate (30) are secured to the lens carrying structure (48) and the outwardly extending lugs are provided on the support structure (25).</p> |
