Surgical Lamp Voltage-Sensitive Device for Illuminance Adjustment
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Solution Overview
Problem
Surgical lamps struggle to maintain consistent light intensity as the pattern size of the light field changes, requiring manual adjustments that can be cumbersome and inefficient.
Innovation Solution
A surgical lamp equipped with a voltage-sensitive device made of electroactive, electrochromic material that adjusts light transmissivity in response to a biasing voltage, allowing for automatic control of light output to maintain desired intensity levels regardless of pattern size changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the pattern size of the light field is adjusted manually, then the light field coverage area is changed, but the light intensity becomes inconsistent and requires additional manual adjustments
Solution Approach 1:
The control system receives feedback from the pattern size adjustment and automatically adjusts the light output accordingly. When the pattern size is changed, the controller modulates the light source intensity to maintain constant illumination in the light field, eliminating the need for manual intensity adjustments.
Solution Approach 2:
The surgical lamp system performs self-adjustment of light intensity based on pattern size changes. The integrated control system automatically compensates for area changes by adjusting light output, allowing the system to maintain optimal illumination without external intervention.
2Illumination intensity
If manual adjustments are made to maintain light intensity, then light intensity consistency is improved, but the operation complexity and time consumption increase
Solution Approach 1:
The control system continuously monitors pattern size and automatically adjusts light intensity in response, eliminating the need for manual intervention. This feedback loop maintains consistent illumination while simplifying operation to a single pattern size adjustment.
Solution Approach 2:
The manual mechanical adjustment of light intensity is replaced by an automated electronic control system. The controller uses electrical signals to modulate the light source, substituting complex manual mechanical adjustments with simple automated electronic control.
3Area of stationary object
If the light output is kept constant while pattern size changes, then the light field coverage is adjusted, but the light intensity in the field becomes non-uniform
Solution Approach 1:
The system changes the light output parameter in response to pattern size changes. When the pattern size is enlarged, the light output is increased proportionally to maintain uniform intensity. When the pattern size is reduced, the light output is decreased to prevent excessive intensity.
4Illumination intensity
If automatic control of light output is implemented, then light intensity consistency is maintained, but the device complexity increases
Solution Approach 1:
The control system serves multiple functions: it monitors pattern size, calculates required light output adjustments, and modulates the light source. This multi-functionality is achieved within a single integrated controller, avoiding the need for separate manual adjustment mechanisms.
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 consistent light intensity in the surgical field without manual intervention, adapting to changes in pattern size and external light sources, providing optimal lighting conditions during surgical procedures.
Implementation Method 1
A voltage sensitive device is disposed between the light source and the surgical site. The voltage sensitive device has light transmissive properties that change in response to a biasing voltage applied thereto.
Data Source
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AI summary
The present invention provides a surgical lamp for illuminating a surgical site. The surgical lamp includes a housing that defines an internal cavity. A light source is disposed within the internal cavity of the housing for producing a light field at a surgical site that is remote from the housing. A voltage sensitive device is disposed between the light source and the surgical site. The voltage sensitive device has light transmissive properties that change in response to a biasing voltage applied thereto. Control means control the biasing voltage to the voltage sensitive device.