Handheld Illumination Apparatus with Automatic Intensity Control
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Solution Overview
Problem
Current illumination devices for examining living tissues, such as the female breast or male testicular tissues, lack user-friendliness and reliability, particularly in ensuring easy operation and reassurance for lay users, and do not provide adequate contrast for early disease detection.
Innovation Solution
A hand-held illumination apparatus with a light source comprising red-orange light emitting diodes, a capacitive switch mechanism for automatic intensity adjustment, and a power circuit for pulse width modulation, which provides a low-intensity standby mode and a high-intensity examination mode, along with a heat sink for efficient heat management and a display for user feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-intensity illumination is provided continuously, then tissue visualization quality is improved, but user comfort and safety deteriorate due to dazzling and loss of dark sensitivity
Solution Approach 1:
The illumination device implements periodic action through automatic intensity modulation between high and low states. The control circuit switches between high-intensity illumination for tissue examination and low-intensity standby mode to prevent user dazzle and maintain dark sensitivity, creating a rhythmic illumination pattern that alternates between these two states based on operational needs
Solution Approach 2:
The device applies dynamics by making the illumination intensity adjustable and time-dependent rather than static. The control circuit dynamically adjusts the light output based on operational phase (standby vs. examination), allowing the system to adapt its illumination characteristics to different usage scenarios and temporal requirements
2Illumination intensity
If high power is supplied to light emitting diodes, then illumination intensity is improved, but power consumption increases
Solution Approach 1:
The power circuit implements periodic action by supplying high power to the LEDs only during brief examination periods when the switch is activated, then returning to a low-power standby state. This intermittent high-power delivery provides sufficient illumination intensity when needed while minimizing overall energy consumption during extended standby periods
Solution Approach 2:
The device applies partial action by providing full power illumination only for the minimal time necessary to perform the examination. The system uses excessive power temporarily during the switch-activated period to ensure adequate illumination intensity, then reduces to minimal power consumption during standby, achieving the required illumination effect without sustained high energy input
3Ease of operation
If simple switch control is used, then ease of operation is improved, but reliability deteriorates due to accidental activation
Solution Approach 1:
The switch mechanism serves as an intermediary between the user and the illumination system. It provides a simple interface for operation while incorporating design features that prevent accidental activation, mediating between user intent and system response to ensure reliable control
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 device ensures user safety and comfort by preventing dazzling, maintaining dark sensitivity, and providing optimal visualization of tissue structures, while minimizing power consumption and battery usage, thereby aiding early disease detection and reducing the need for invasive surgeries.
Implementation Method 1
a light source mounted in the head for illuminating the tissues, the light source comprising a plurality of light emitting diodes
Implementation Method 2
a heat sink member within the elongate housing, the heat sink member extending from adjacent to the light source into the body portion
Data Source
AI summary
An illumination apparatus for use in examining a body of living tissues, the apparatus comprising a head for contacting the body of living tissues, a light source mounted in the head for illuminating the tissues, and an annular switch disposed around the light source, the annular switch being adapted automatically to permit illumination of the light source at an examination intensity when the head contacts the body at least around an annular contact area on the head corresponding to the annular switch.