Zoom Strobe Light Distribution Angle Control
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Solution Overview
Problem
Conventional zoom strobes fail to maintain proper light distribution angles during changes in light emission amounts, leading to unintended illumination patterns when the luminous body position shifts relative to the discharge tube and reflector, especially in weak light emission modes.
Innovation Solution
An illumination apparatus with a movable light source and reflector, controlled by a microcomputer, adjusts the relative distance between the discharge tube and reflector to maintain optimal light distribution angles based on light emission amounts, ensuring consistent illumination patterns across varying focal lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the relative position between the discharge tube and the reflector is changed to adjust the light distribution angle, then the light distribution angle can be optimized for different focal lengths, but the luminous body position shifts relative to the discharge tube and reflector when light emission amount changes, causing unintended illumination patterns
Solution Approach 1:
The invention makes the discharge tube position adjustable relative to the reflector through a moving mechanism. The controller dynamically adjusts the discharge tube position based on the light emission amount (full light or weak light mode), enabling the system to adapt to different operating conditions and maintain optimal illumination patterns regardless of the light emission level.
2Use of energy by moving object
If the light emission amount is reduced for weak light emission mode, then the current flowing through the discharge tube decreases, but the luminous body is attracted to the conductive reflector and/or conductive coating, causing the light distribution angle to change to an unintended angle
Solution Approach 1:
The controller performs preliminary adjustment of the discharge tube position before initiating weak light emission. By moving the discharge tube to a predetermined position suitable for weak light mode in advance, the system prevents the luminous body from being attracted to the conductive reflector or coating, thereby maintaining the intended light distribution angle throughout the weak light emission process.
3Volume of moving object
If the zoom strobe is miniaturized, then the discharge tube size is reduced, but the relative position change between the discharge tube and reflector has a significant impact on the light distribution angle, making precise control more difficult
Solution Approach 1:
The controller receives information about the light emission amount and uses this feedback to determine the appropriate discharge tube position. By continuously monitoring the operating conditions and adjusting the discharge tube position accordingly, the system compensates for the heightened sensitivity of miniaturized components, maintaining precise light distribution angle control despite the reduced size of the discharge tube.
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
The solution ensures that the light distribution angle is accurately adjusted in real-time, maintaining proper illumination even during changes in light emission, thereby preventing unintended illumination patterns and ensuring effective object illumination.
Implementation Method 1
a reflector configured to reflect light from the light emitter
Implementation Method 2
a mover configured to move at least one of the light emitter and the reflector so that a relative distance between the light emitter and the reflector varies
Data Source
AI summary
An illumination apparatus includes a light source portion including a light emitter and a reflector configured to reflect light from the light emitter, a mover configured to move at least one of the light emitter and the reflector so that a relative distance between the light emitter and the reflector varies in order to change a light distribution angle of the light source portion, and a controller configured to control a position of at least one of the light emitter and the reflector via the mover based on a light emission amount of the light emitter.