LED Light Projection Device Rotary Dimming Control
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Solution Overview
Problem
The transition from xenon lamps to light-emitting diodes in light projection devices disrupts the familiar operating method and feel for lighting technicians, as the mechanical adjustment mechanisms used for xenon lamps are no longer necessary with LEDs, leading to a need for a solution that mimics the original light adjustment experience.
Innovation Solution
A light projection device with a tubular casing housing a light-emitting diode, featuring a light amount control mechanism that includes a rotating body, a variable resistor, and a link mechanism to adjust current, allowing for similar light adjustment and operation feel to xenon lamp systems, using a rotating body to increase or decrease current and an iris shutter for beam diameter control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the light source is replaced with a light-emitting diode, then power consumption is reduced and heat generation is lowered, but the operating method and operation feel differ from conventional xenon lamp systems
Solution Approach 1:
The patent applies the copying principle by replicating the mechanical operating interface of conventional xenon lamp systems. A rotating body with operating parts is provided that mechanically adjusts light output, copying the familiar dimming shutter operation feel. This allows lighting technicians to operate the LED-based device using the same manual rotation technique they are accustomed to with xenon lamps, thereby preserving ease of operation while benefiting from LED efficiency.
Solution Approach 2:
The patent applies mechanics substitution by replacing the electrical current control method with a mechanical rotation interface. Instead of electronically adjusting LED current, the system uses a rotating body that mechanically interacts with the light path or control mechanism, substituting electronic control with a mechanical interface that familiarizes operators with conventional systems.
2Device complexity
If the first cutter device and second cutter device are removed, then device complexity is reduced, but the familiar mechanical adjustment mechanism is lost
Solution Approach 1:
The patent applies the merging principle by combining the functions of the first cutter device (dimming shutter for light amount adjustment) and the second cutter device (shutter for light emission control) into a single integrated rotating body. This rotating body incorporates multiple operating parts that can independently or collectively control light output, merging multiple mechanical adjustment functions into one unified interface that reduces overall device complexity while maintaining operational familiarity.
Solution Approach 2:
The patent applies the universality principle by designing the rotating body to perform multiple functions simultaneously. The rotating body serves as both the dimming control mechanism (replacing the first cutter device) and the shutter control mechanism (replacing the second cutter device), making it a multi-functional component that consolidates several adjustment functions into a single universal interface.
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 the operating method and feel of light adjustment in LED-based light projection devices to closely resemble those using conventional xenon lamps, maintaining the desired lighting control and user experience.
Implementation Method 1
a variable resistor that allows for control of increasing and decreasing the amount of current applied to the light-emitting diode
Implementation Method 2
a light source configured with a light-emitting diode housed in the casing
Data Source
AI summary
A light projection device includes a tubular casing having a light-emitting part at one tube end; a light source configured with a light-emitting diode; and a light amount control mechanism positioned between the light source and the light-emitting part. The light amount control mechanism includes a rotating body, an operating part attached to the rotating body such as to allow for rotary operation of the rotating body from outside the casing, a variable resistor, and a link mechanism operably connecting the rotating body and the variable resistor such that a forward movement of the rotating body causes a movable part of the variable resistor to move in a direction in which the amount of current is increased and such that a backward movement of the rotating body causes the movable part of the variable resistor to move in a direction in which the amount of current is decreased.