ABSTRACT

Apparatus for modifying a beam of light, comprising at least one set of blades moveable across the beam, wherein each set of blades is arranged into a first subset of blades and a second subset of blades, and wherein the respective subsets of blades are axially spaced from each other. The apparatus is particularly suitable in apparatus comprising a light source and means for directing and/or focusing the light, and may be embodied (a) in a color changer for changing the color of light in a light beam, (b) in a diaphragm for varying the aperture, and (c) in dimmer apparatus for dimming light beam.

Inventor(s) WYNNE WILLSON PETER DAVID [GB]; MORRELL DAVID [GB]
Applicant(s) WYNNE WILLSON GOTTELIER LIMITE [GB]

Classification: International F21S10/02; F21S8/00; F21V11/10; F21V9/10; G02B5/00; G03B9/06; (IPC1-7): F21V14/08; Cooperative F21S10/02; F21V11/10; F21V9/10; G02B5/005; G03B9/06; F21W2131/406
Priority Numbers GB19950015328 19950726 ; WO1996GB01817 19960726
Also Published as WO9705423 (A1)   EP0840873 (A1)   EP0840873 (B1)   DE69604673 (T2)   CA2227788 (A1)  AU6622896 (A)   AU715871 (B2)   AT185616 (T)  
Also Filed As  DE69604673D1,DE69604673T2, WO1997005423A1

Publication Date 15 Aug 2000
Filing Date 26 Jul 1996