| 摘要 |
<p>A meniscus lens (1) comprises a partially reflective coating on one face which reflects a portion of incident light and transmits the remainder adapted, in use, to be attached co-axially in front of the lens of a camera with the rear concave surface thereof facing the camera lens such that the subject of a photograph, when looking towards the camera, sees reflected in the meniscus lens an image which is in all essential respects identical to the image which would be seen in the camera view finder.</p> |
