| 摘要 |
<p>A wide-angle projection lens module is includes a reflective convex aspheric mirror G1 and a refractive lens group G4 of positive refractive power. The following Conditions (1) to (2) are satisfied:15< I Freflective IF I <25 Condition (1); and1.5 < I FrefractivefF I< 2.0 Condition (2),wherein, F is a focal length of the wide-angle projection lens module, Freflective is a focal length of the reflective convex mirror, and Frefractive is a focal length of the refractive lens group. Other conditions as set out in claims 1, 13 and 15 may apply. The module may be used in an optical engine that also has a relay optical system.</p> |
