| 摘要 |
<p>The disclosed embodiments relate to a system and method for wide angle image projection. An exemplary embodiment of the present invention comprises a video unit, comprising an imaging system configured to create a projected image, a lens group optically coupled to the imaging system to receive the projected image. The lens group including a lens doublet having a first positive crown element, a negative flint element affixed to the first positive crown element, and a second positive crown element adjacent to the lens doublet and facing the imaging system. The video unit further comprises a positive flint element optically coupled to the lens group to receive the projected image from the lens group, a physical stop disposed between the positive flint element and the lens group, and a negative crown meniscus optically coupled to the positive flint element to receive the projected image from the positive flint element, the negative crown meniscus adapted to produce a wide-angle representation of the projected image.</p> |
