IRIS DIFFUSER FOR ADJUSTING LIGHT BEAM PROPERTIES
First Claim
1. An aperture mechanism for variably adjusting an output light beam, said aperture mechanism comprising:
- a plurality of aperture blades;
a support frame having an opening therein, said support frame configured to receive and support said plurality of aperture blades, wherein said aperture blades are movable within said support frame between a retracted position and an extended position wherein said aperture blades extend across said opening; and
an actuator adjacent said support frame, said actuator operable to selectively move said plurality of aperture blades between said retracted and extended positions, wherein said aperture blades are at least partially light transmissive.
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Accused Products
Abstract
An apeture mechanism that utilizes translucent, transparent or colored blades to modify the output beam of a lighting device is provided. A conventional apeture mechanism having replacement blades formed of a diffusion screen provides a control assembly that, when placed in front of the output beam of a lighting device, allows the user to selectively control the beam between a spot and a flood pattern. Further, the blades may be formed of translucent or transparent colored filter material to alter the color of the output beam. The apeture mechanism may be incorporated into compact lighting devices such as flashlights, architectural lighting devices or other accessories for use in conjunction with these lighting devices.
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Citations
23 Claims
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1. An aperture mechanism for variably adjusting an output light beam, said aperture mechanism comprising:
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a plurality of aperture blades;
a support frame having an opening therein, said support frame configured to receive and support said plurality of aperture blades, wherein said aperture blades are movable within said support frame between a retracted position and an extended position wherein said aperture blades extend across said opening; and
an actuator adjacent said support frame, said actuator operable to selectively move said plurality of aperture blades between said retracted and extended positions, wherein said aperture blades are at least partially light transmissive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lighting assembly with an adjustable output beam comprising:
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a light source, said light source generating an output beam; and
an aperture mechanism disposed in operative engagement with said light source for variably adjusting said output light beam, said aperture mechanism including;
a plurality of aperture blades, a support frame having an opening therein, said support frame configured to receive and support said plurality of aperture blades, wherein said aperture blades are movable within said support frame between a retracted position and an extended position wherein said aperture blades extend across said opening, and an actuator adjacent said support frame, said actuator operable to selectively move said plurality of aperture blades between said retracted and extended positions, wherein said aperture blades are at least partially light transmissive. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A flashlight comprising:
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a housing having a first end;
a power source disposed within said housing;
a light source disposed within said housing in operative engagement with said power source, said light source generating an output beam wherein said output beam is directed outwardly from said first end of said housing; and
an aperture mechanism disposed adjacent said first end of said housing for variably adjusting said output light beam, said aperture mechanism including;
a plurality of aperture blades, a support frame having an opening therein, said support frame configured to receive and support said plurality of aperture blades, wherein said aperture blades are movable within said support frame between a retracted position and an extended position wherein said aperture blades extend across said opening, and an actuator adjacent said support frame, said actuator operable to selectively move said plurality of aperture blades between said retracted and extended positions, wherein said aperture blades are at least partially light transmissive. - View Dependent Claims (21, 22, 23)
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Specification