Surgical Light Automatic Illuminance Compensation Mechanism
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Solution Overview
Problem
Conventional surgical lights face a reduction in illuminance when the focal length is adjusted, leading to inconvenient operation and reduced light intensity on the operation area, as existing methods only increase the reflector diameter or move the focal plane, failing to enhance illuminance effectively.
Innovation Solution
An automatic light intensity compensating device with a focus adjustment mechanism and a focus detecting device that automatically adjusts the focal length and luminance of each light source, using a suspension system, light heads with grips, and an automatic illuminance compensation mechanism to maintain consistent illuminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the diameter of the reflector is increased or the focal plane is moved away to vary the illumination range, then the illumination range diameter is increased, but the illuminance on the operation area is significantly reduced
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance of light sources based on the detected focus position. When the focal plane moves away or illumination range increases, the system automatically increases light source luminance to compensate for illuminance reduction, thereby resolving the contradiction between expanded illumination range and maintained illuminance intensity
Solution Approach 2:
The patent implements feedback through the focus detecting device that continuously monitors the focus adjustment mechanism position. This detected information feeds back to the illuminance compensation device, which automatically adjusts light source luminance accordingly, creating a closed-loop system that maintains optimal illuminance while allowing illumination range variation
2Area of moving object
If the focal plane is moved away to increase illumination range, then the area covered is increased, but the illuminance on the operation area cannot be increased making operation inconvenient
Solution Approach 1:
The patent applies self-service through the automatic illuminance compensation system that detects focus changes and autonomously adjusts light source luminance without requiring manual intervention. This automated process maintains optimal illuminance levels while allowing the illumination range to vary, significantly improving operational convenience
Solution Approach 2:
The focus detecting device provides continuous feedback on focus position to the illuminance compensation device, enabling automatic adjustment of luminance. This feedback mechanism ensures that illuminance remains optimal regardless of illumination range changes, eliminating the need for manual adjustment and improving ease of operation
Data Source
AI summary
An automatic light intensity compensating device of a surgical light includes a suspension or support system and one or multiple light heads carried on the suspension or support system. Each of the light head includes a housing, one or multiple grips mounted to the housing for hand holding and moving the light head to a desired position, one or multiple light sources mounted in the housing for illumination, a focus adjustment mechanism for adjusting the focal length of illumination, a focusing detection mechanism for detecting a position of the focus adjustment mechanism within a variation range, and an automatic illuminance compensation device, which automatically increases or decreases luminance of the light source according to the position of the focus adjustment mechanism.