LIGHTING APPARATUS WITH ADJUSTABLE LENSES OR FILTERS

• US 20080259600A1
• Filed: 02/18/2008
• Published: 10/23/2008
• Est. Priority Date: 09/07/2001
• Status: Active Grant

• Current Assignee: Litepanels LLC (Litepanels)
• Original Assignee: Litepanels LLC (Litepanels)
• Inventors: Fisher, Ken S., Pohlert, Rudy G., Grosswendt, Pat, Baxter, Kevin C.
• Granted Patent: US 7,874,701 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 21/0885 for portable lighting devices
• CPC Class Codes: F21V 21/116 Fixing lighting devices to arms or standards F21V21/002 takes precedence
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G03B 15/02 Illuminating scene
• CPC Class Codes: G03B 15/03 Combinations of cameras with lighting apparatus; Flash units
• CPC Class Codes: G03B 15/05 Combinations of cameras with electronic flash apparatus; Electronic flash units
• CPC Class Codes: G03B 2215/0517 Housing
• CPC Class Codes: G03B 2215/0539 Ringflash
• CPC Class Codes: G03B 2215/056 Connection with camera, e.g. adapter
• CPC Class Codes: H04N 23/56 provided with illuminating means
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A lighting apparatus comprises a light panel having a panel frame, and a plurality of LEDs or other light elements secured to the panel frame. Lenses and/or filters are adjusted in distance from the light elements, by for example moving the lenses/filters into different slot positions of the frame, to alter characteristics of the emitted light. Focal lenses, diffusion lenses, and color filters may be used individually or in combination. A compound lens includes lens elements having different characteristics arranged in a pattern. Through groupwise control of the intensity of the light elements, the different characteristics are emphasized or de-emphasized. The light panel may have an integrated battery, and may be mounted on a stand. The panel may be modular, allowing larger panels to be constructed from smaller panels.

Claims

1. An illumination system, comprising:

a light panel comprising a panel frame;

a plurality of semiconductor light elements disposed on the panel frame; and

an adjustable lens positioned so as to alter a characteristic of the light emitted by the semiconductor light elements.