Dichroic Filter Tilt Mechanism for High-Definition Color Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current color changers for spotlights are unable to control the numerous shades of color with high definition and alter the spectrum effectively, resulting in images with low detail and color definition due to the limitations of predefined dichroic filters and their movement mechanisms.
Innovation Solution
A color changer system that includes dichroic filters with actuation means to tilt them with respect to the light source's axis, allowing for both translational and rotary motion, enabling more precise control over the placement and orientation of cyan, magenta, and yellow filters within the light beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dichroic filters are moved only translationally at right angles to the light beam axis, then the mechanism is simple, but the color definition and spectrum control are insufficient
Solution Approach 1:
The patent introduces a rotational degree of freedom in addition to the existing translational movement. The dichroic filters can now rotate around the light beam axis, allowing different portions of the filter to be positioned in the light path. This dimensional change enables continuous spectrum control and high-definition color mixing without requiring multiple discrete filters for each wavelength.
2Adaptability or versatility
If predefined dichroic filters are used with fixed tints, then the device is simple to manufacture, but the ability to control numerous shades of color with high definition is limited
Solution Approach 1:
The patent makes the filter system dynamic by enabling rotational movement. Instead of using multiple static filters with different tints, a single dichroic filter can be rotated to present different effective tints to the light beam. This dynamic approach provides continuous adaptability for color control while simplifying manufacturing, as fewer custom-filtered components are needed.
3Measurement precision
If multiple motors are used to move each dichroic filter translationally, then the filters can be positioned precisely, but the overall device complexity increases
Solution Approach 1:
The rotational movement mechanism serves multiple functions: it enables continuous spectrum selection, allows precise control of color mixing ratios, and provides a compact actuation method. A single rotational actuator per filter replaces what would otherwise require multiple translational motors and complex positioning mechanisms, reducing overall system complexity while maintaining or enhancing precision.
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
This solution allows for higher definition control of color shades and spectrum alteration, enhancing the detail and color definition of the final image, while being reliable, simple, and cost-effective.
Implementation Method 1
three dichroic filters, one for each of the individual fundamental colors, cyan, magenta and yellow
Implementation Method 2
actuation means which are adapted to tilt said dichroic filter with respect to the axis of said light source
Data Source
AI summary
A color changer, particularly for spotlights, comprising at least one dichroic filter which is adapted to be arranged in front of a light source, a motor for moving the at least one dichroic filter which is adapted to place the dichroic filter at least partially in front of the light source, the color changer further comprising an actuator which is adapted to tilt the dichroic filter with respect to the axis of emission of the light source.