Wash Light Zoom Lens Module for Beam Angle Control
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Solution Overview
Problem
Existing automated luminaires lack efficient mechanisms for controlling the zoom and beam shape of light output, particularly in wash lights, which are used to illuminate performers and scenery, limiting their versatility and performance.
Innovation Solution
A zoom system for automated luminaires that includes a zoom lens module with a converging lens, tubular light spill shield, and positive power optical device, allowing for controlled movement along an optical axis to adjust beam angle without altering the light beam character, combined with fly-eye lens arrays for homogenizing brightness and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a zoom lens module is added to control beam angle, then beam angle control is improved, but device complexity increases
Solution Approach 1:
The zoom lens module is nested within the existing luminaire housing, integrating multiple optical components (converging lens, tubular light spill shield, positive power optical device) into a compact nested structure that fits within the original device footprint without requiring additional external components
Solution Approach 2:
The zoom lens module serves multiple functions simultaneously: it controls beam angle, shapes the light output, and works with the fly-eye lens array to homogenize illumination. This multi-functionality reduces the need for separate mechanisms for each function, thereby managing device complexity while improving adaptability
2Stability of the object's composition
If fly-eye lens arrays are added to homogenize light output, then homogeneity is improved, but device complexity increases
Solution Approach 1:
The fly-eye lens array is merged with the zoom lens module assembly, where the lens array works in conjunction with the converging lens and positive power optical device. This integration allows the homogenization function to be achieved within the existing optical path without requiring a completely separate subsystem
Solution Approach 2:
The fly-eye lens array specifically addresses the local quality of light distribution across the beam cross-section, creating uniform illumination in the critical output region while leaving other parts of the system unchanged. This targeted approach improves homogeneity without unnecessarily complicating the entire device
3Adaptability or versatility
If the zoom lens module is made movable to adjust beam angle, then beam angle control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The movable zoom lens module is driven by a motorized positioning system that replaces manual mechanical adjustment. This allows for precise control of beam angle through motorized actuation along the optical axis, reducing the need for high-precision manual manufacturing tolerances while maintaining accurate beam angle control
Solution Approach 2:
The system includes control circuits that automatically adjust the position of the zoom lens module based on desired beam angle settings, allowing the system to self-adjust without requiring manual intervention. This automated control compensates for minor manufacturing variations and maintains precision without demanding extremely tight manufacturing tolerances
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise control of beam angle and improved homogeneity of light output, enhancing the luminaire's ability to illuminate subjects with a smooth, even light distribution.
Implementation Method 1
The converging lens is configured to receive the one or more substantially parallel light beams emitted by the light source and to emit a converging light beam
Implementation Method 2
The one or more fly-eye lens arrays are fixedly coupled to the zoom lens module. A first fly-eye lens array of the one or more fly-eye lens arrays is configured to receive the one or more substantially parallel light beams emitted by the light source and a second fly-eye lens array of the one or more fly-eye lens arrays is configured to emit an integrated converging light beam
Data Source
AI summary
An optical system and luminaire are provided. The optical system includes a light source, a zoom lens module, and a positive power optical device that emits an output light beam. The light source emits one or more substantially parallel light beams. The zoom lens module includes a converging lens and a tubular light spill shield fixedly coupled to the zoom lens module. The converging lens receives the one or more light beams and emits a converging light beam, which passes through he tubular light spill shield to an aperture at its front end. The aperture is located adjacent to a focus of the converging lens. The positive power optical device receives the converging light beam. The light source and the positive power optical device are fixed in the optical system and the zoom lens module moves between them along an optical axis of the optical system.