| 摘要 |
<p>A projection lens for use with LCD panels is provided. The lens has a first lens unit (U1) which includes a strong negative lens element (E1) having an aspherical surface which provides distortion correction and a second lens unit (U2) which includes a strong positive power first lens subunit (U2S1) separated by an airspace from a weaker power second lens subunit (U2S2). The second lens subunit can include a negative lens element, followed by a positive lens element, followed by a plastic lens element having an aspherical surface. The projection lens has a field of view of at least 35° so that the overall projection lens system has a compact size.</p> |
