| 摘要 |
<p>A first bundle of light rays from object impinges upon the front surface of light transmissive element (4). A second bundle of light rays impinges upon light reflective element (5). The second bundle of light rays is reflected by light reflective element (5) to the rear surface of light transmissive element (4) and defines a second image. In an embodiment the light transmissive element is a colour filter such as a red filter. Hence, the first bundle of light rays impinging upon the red filter is modified in colour content. The light beams serve as mutual colour filters for one another such that each of the reflected and transmitted beams of light of each impinging beam of light will be altered in colour content.</p> |
