This redesigned narrow angle profile spot uses the same inexpensive 500 or 250 watt projector lamps as the standard Patt 23 II but provides more than double the intensity.
The light is collected at the gate by a faceted ellipsoidal rear reflector supplemented by a front annular reflector. The beam is shaped at the gate either by the four built-in shutters or by the iris diaphragm. This gate aperture is focussed by a 6 inch (150mm.) diameter long focus lens into an evenly distributed 11° maximum spread beam with clear cut edges.
This spotlight is equipped as a compact and inexpensive follow spot for ballrooms, cabaret clubs etc. but is equally useful for more general stage lighting from the auditorium if the throw distance exceeds 30 feet (10 metres).

NEW: DOWNLOAD Data sheet - Patt 23N II - 1969 (PDF)

1. 7-in. diameter faceted ellipsoidal reflector
2. Medium prefocus lampholder
3. 7-in. diameter annular reflector
4. Four externally operated beam-shaping shutters each capable of 90° rotation around the optical axis.
5. Gate runners, with 12-leaf iris diaphragm.
6. Fixed aperture diaphragm to intercept stray light.
7. 6 x 9-in. plano-convex lens in sliding, but captive, lens tube.
8. Double die-cast colour frame runners.
9. Hinged rear door for interior access.