US 7,057,830 B2, Exemplary Embodiment 1 — Hildegard Ebbesmeier
| 7 ELEMENTS / 7 GROUPS |
| DESIGN f = 35 mm |
| DESIGN F/1.7 |
| 1 ASPHERICAL SURFACE / 1 ELEMENT |
| PROJECTION LENS |
Projection lens modeled at the patent's infinity conjugate only, with no focusing movement modeled. Schneider publishes no minimum projection distance; the projectionist sets the throw with the lens's FOCUS screw.
| Element | Type | Glass |
|---|---|---|
| 20 | Meniscus Negative | N-BK7 (Schott catalog equivalent; production supplier unspecified) |
| 22 | Meniscus Positive (Aspheric) | S-LAL18 (OHARA catalog equivalent; production supplier unspecified) |
| 24 | Biconvex Positive | N-LAK21 (Schott catalog equivalent; production supplier unspecified) |
| 26 | Biconcave Negative | S-FTM16 (OHARA catalog equivalent; production supplier unspecified) |
| 28 | Biconcave Negative | S-NPH1 (OHARA catalog equivalent; production supplier unspecified) |
| 30 | Biconvex Positive | N-LAK21 (Schott catalog equivalent; production supplier unspecified) |
| 32 | Biconvex Positive | S-LAH97 (OHARA catalog equivalent; production supplier unspecified) |