Surgical Lamp 3D Sensor Shadow Prevention
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Solution Overview
Problem
Current surgical lamps cannot anticipatorily prevent or reduce shadowing in the surgical field, as they only detect obstacles in the light beam path and lack advanced sensors for predicting and managing shadowing effectively.
Innovation Solution
A surgical lamp equipped with a 3D sensor that detects the spatial position and motion of objects between the lamp body and the surgical field, allowing for real-time control of light sources to prevent shadowing by dimming or switching off lights impinging on obstacles, while maintaining constant illuminance through increased performance of adjacent lights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pure distance measuring devices and additional specific sensors are deployed for distance measurement and sensor based application, then measurement precision and functionality are improved, but device complexity and cost increase
Solution Approach 1:
The 3D sensor serves multiple functions simultaneously: it performs distance measurement, detects object position, determines object size, and enables gesture recognition. This multi-functionality eliminates the need for separate distance measuring devices and specific sensors, thereby reducing device complexity while maintaining measurement precision.
Solution Approach 2:
The patent combines distance measurement capabilities with object detection and gesture recognition into a single 3D sensor system. By merging these previously separate functions into one integrated sensor, the system achieves the same measurement precision without requiring multiple separate components, thus reducing overall system complexity.
2Object-affected harmful factors
If sensors detect obstacles only in the beam path and dim the respective light source, then shadowing is prevented, but the ability to anticipate and prevent changing shadowing is lost
Solution Approach 1:
The 3D sensor detects objects and predicts their movement trajectories in advance, allowing the control device to preemptively adjust light source intensity before shadows form. This preliminary action enables the system to anticipate changing shadowing conditions rather than merely reacting to detected obstacles, maintaining optimal illumination without delay.
Solution Approach 2:
The system continuously monitors object position and motion through the 3D sensor, providing real-time feedback to the control device. This feedback loop enables dynamic adjustment of light source intensity based on predicted object movement, allowing the system to anticipate and prevent shadowing before it occurs rather than reacting after obstacles are detected.
3Object-affected harmful factors
If multiple illuminants are controlled individually based on object position, then shadowing is reduced, but energy consumption increases
Solution Approach 1:
The control device adjusts the intensity of individual light sources based on the specific local requirements created by object position. Only the illuminants affected by objects are dimmed or switched off, while other illuminants maintain full intensity. This localized adjustment reduces shadowing precisely where needed without unnecessarily consuming energy across the entire lighting system.
Solution Approach 2:
The system dynamically changes the intensity parameter of individual illuminants based on real-time object detection and prediction. By selectively adjusting only the necessary light sources rather than uniformly controlling all illuminants, the system achieves effective shadowing reduction while optimizing energy consumption through parameter modulation rather than full-system 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 3D sensor enables anticipatory prevention of shadowing, maintaining consistent illuminance in the surgical field by predicting object movement and controlling light distribution based on object size, contour, and motion, thereby enhancing surgical visibility and operational efficiency.
Implementation Method 1
a 3D sensor (6) for detecting a spatial position of objects, as e.g. parts of the body of the surgical personnel, surgical apparatuses or a body of a patient, or of motions of the objects is arranged at the lamp body (1)
Data Source
AI summary
A surgical lamp for illuminating a surgical field on a human body is provided. The surgical lamp comprises a control device (4), a lamp body (1) comprising several illuminants (3) with one respective light ray (I, II, II′) directed to the surgical field, and a 3D sensor (6) for detecting a spatial position of at least one object, and a device for switching on and off and dimming the illuminants (3), wherein the control device (4) controls the devices for switching on and off and dimming the illuminants (3), the 3D sensor (6) detects the spatial positon of the at least one object and transmits corresponding data to the control device (4), and the control device (4) is configured to control the illuminants (3) according to the spatial position of the at least one object.