Ceiling Lighting Tilt Adjustment via Crosswise Optical Sensors
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Solution Overview
Problem
Existing ceiling-mounted lighting devices for treatment rooms face challenges in accurately and efficiently adjusting the concentrated light position due to complex sensor unit configurations and reliance on reflected light for positioning, leading to prolonged adjustment times.
Innovation Solution
A ceiling-mounted lighting device with a tilt adjustment mechanism featuring four optical sensors arranged crosswise, a light-shielding body with through-holes, and rotatable movable bodies on orthogonal axes, allowing direct light from the emitter to be concentrated onto the sensors for precise tilt adjustment, synchronized with the lighting lamp, simplifying the adjustment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor units with integrated prisms, optical sensors and motors are mounted on both ends of the housing to concentrate light to a treated site, then the light concentration capability is improved, but the device complexity increases considerably
Solution Approach 1:
The patent extracts the light-receiving function from complex sensor units and creates a dedicated, simplified light-receiving unit with only four optical sensors arranged crosswise and a light-shielding body with through-holes. This separated design eliminates the need for integrated motors and prisms in the sensor unit, reducing overall device complexity while maintaining light concentration capability
Solution Approach 2:
The patent segments the lighting device into functionally independent components: a lighting lamp for illumination, a simplified light-receiving unit with four optical sensors for detection, and a tilt adjustment mechanism with movable bodies for positioning. This segmentation allows each component to be optimized independently, reducing the complexity of the sensor system while preserving light concentration functionality
2Measurement precision
If reflected light from the surgical site is used for positioning the lighting lamp, then the positioning function is achieved, but the adjustment time becomes too long
Solution Approach 1:
The patent implements preliminary action by providing a dedicated light emitter that emits light toward the treatment table before the main lighting operation. This preliminary light emission allows the four optical sensors to detect the treatment table position in advance, enabling faster and more accurate positioning of the lighting lamp without relying on slow reflected light detection during the actual surgical procedure
Solution Approach 2:
The patent introduces an intermediary light emitter as a mediator between the lighting lamp and the treatment table. This intermediary emits light that directly reaches the treatment table and reflects back to the optical sensors, providing a reliable and fast positioning signal that eliminates the time delay associated with using reflected light from the surgical site alone for positioning
3Measurement precision
If the light-receiver adjusts the housing position by hitting light on the surgical site and receiving reflected light, then the positioning function is achieved, but the adjustment efficiency is reduced
Solution Approach 1:
The patent applies self-service by enabling the light-receiving unit to automatically detect the treatment table position using direct light from the light emitter and generate positioning signals without requiring external intervention or complex processing. The four optical sensors automatically track the treatment table and control the tilt adjustment mechanism, achieving fast and accurate positioning that improves adjustment efficiency while maintaining precision
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 easy and accurate adjustment of the lighting lamp's tilt using direct light, reducing adjustment time and simplifying the configuration by ensuring the light-receiving unit always confronts the treatment table, improving the efficiency of light concentration.
Implementation Method 1
receiving its reflected light by a light receiver and concentrating the lighting position of the lighting lamp to the surgical site based on an intensity signal of the received light
Implementation Method 2
a light-shielding body through which four through-holes are cut as positions that are respectively opposite to light-receiving surfaces of the optical sensors; single tilt adjustment light emitted from a light emitter of a side of the treatment table passes through the through-holes to form four spotted tilt adjustment lights which are respectively concentrated to the sensors
Data Source
AI summary
A light-receiving unit containing four optical sensors arranged crosswise and a light-shielding body containing four through-holes confronting light-receiving surfaces of the optical sensors, and a tilt adjustment mechanism containing first and second movable bodies which are mounted on first and second rotation shafts arranged on a same plane to cross at right angles are provided. The tilt adjustment mechanism is mounted in a housing constituting a ceiling-mounted type lighting device and the light-receiving unit and a lighting lamp are mounted on a rotational center axis of the second moving body. Tilt adjustment light emitted from a treatment table hits the optical sensors via the light-shielding body.