Industry Patents
Patent: 6092914
Zoom Lighting Fixture having Multifunction Actuator
(Click image for PDF of full patent)
| Patent Number: |
6092914 |
| Title: |
Zoom Lighting Fixture having Multifunction Actuator |
| Abstract: |
A lighting fixture configured to image a high-intensity beam of light at a
distant location with a variable beam spread and a variable image
distance. The lighting fixture includes an illuminator mounted on a front
projection system. The illuminator includes an elliptical reflector
defining two focal points. A lamp is at one of the reflector's focal
points, while an aperture of the front projection system is at the
reflector's other focal point. The front projection system includes a
tubular housing having shutter blades moveably positionable in the
aperture to obstruct light passing through the second focal point. A rear
lens receives and transmits light emitted by the illuminator, while a
front lens is configured to receive light transmitted by the first lens
and project it at the distant location. The lenses are contained within
the housing. A positioning mechanism is mounted on the housing, and
includes a rack and pinion gear device that adjusts the distance between
the front and rear lenses in response to the rotation of an actuator. The
actuator is configured to slide along a slot in the housing, controlling
the translation of the first and second lenses with respect to the
illuminator. The actuator is configured with a shielding baffle that
covers the slot, and with field angle indicia labeling the actuator with
beam spread settings. The actuator is further configured with a locking
cam lever that constrains the actuator from being moved with respect to
the housing when the locking cam lever is in a locked position.
|
| Country of Issue: |
US |
| First Named Inventor: |
Esakoff, Foster |
| Assignee: |
Electronic Theatre Controls |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 29/00 |
| US Classification: |
362/268 |
| Issue Date: |
06-25-2000 |
| Filing Date: |
06-22-1998 |
| Application : |
09/102717 |
| Notes: |
Source 4 zoom |
| Link to Patent at freepatentsonline.com: |
6092914 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6092914 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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