Framing shutter system for a luminaire
View Patent ↗Described are an improved automated luminaire 12 and luminaire systems 10 employing an improved automated framing shutter mechanism 18 for an automated luminaire which provides rapid and accurate operation via a five-bar linkage driven by two motors for each shutter blade constrained by spacer plates and with a circular aperture integrated between at least two of the shutter blades.
1. An automated luminaire optical system with a framing shutter system comprising:
a plurality of shutter blades each shutter blade driven by a five-bar linkage driven by two motors and the movement of one of the linkage bars; and
where the movement of each such shutter blade is constrained by a spacer plate and
where the movement of such shutter blade is further constrained by a slot pin linkage with a slot in the spacer plate where the pin does not share an axis with any of the five-bar linkages.
2. The luminaire of claim 1 where the shutter blade is one of the bar's in the five-bar linkage.
3. The luminaire of claim 2 where the pin whose motion is constrained by the slot in the slot in the spacer plate protrudes from the shutter blade.
4. The luminaire of claim 3 where the pin is equidistant from the linkage connections to the shutter blade.
5. The luminaire of claim 1 where at least one of the shutter blade spacer plates provides a circular aperture for the optical system of the luminaire.
6. The luminaire of claim 1 where a circular aperture in interleaved between at least two shutter blades.
7. The luminaire of claim 1 with two pairs of opposing shutter blades where second pair is configured orthogonally to the first pair.
8. The luminaire of claim 7 where the order of the shutter blades and spacer plates are stacked as follows:
first spacer plate;
first blade of first shutter blade pair;
second spacer plate;
second blade of first shutter blade pair;
first blade of second shutter blade pair;
third spacer plate;
second blade of second shutter blade pair;
fourth spacer plate.
9. The luminaire of claim 8 where the second spacer plate provides the optical system with a circular aperture.
10. The luminaire of claim 8 where the first spacer plate provide the optical system with a circular aperture.
11. The luminaire of claim 9 where the third spacer plate also provides the optical system with a circular aperture.
12. The luminaire of claim 8 where the framing system is mounted to a carrier articulated to rotate the framing system about a cross-section of the optical system.
13. The luminaire of claim 6 where the framing system is mounted to a carrier articulated to rotate the framing system about a cross-section of the optical system.
14. The luminaire of claim 1 where the framing system is mounted to a carrier articulated to rotate the framing system about a cross-section of the optical system.