Rotatable Lens Cover for Infrared Sensor Angle Adjustment
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Solution Overview
Problem
Conventional infrared-sensitive lighting devices face limitations in adjusting the sensing angle or direction, which affects their operational efficacy when installed in different environments, such as transitioning from a wall to a ceiling, leading to improper sensing areas and compromised automatic control of the light-emitting element.
Innovation Solution
The infrared-sensitive lighting device features a rotatable semispherical lens cover with a lens pattern and a rotary ring, allowing for easy adjustment of the sensing angle or direction by aligning marks with an indication post, enabling effective sensing operations in various installation configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotatable semispherical lens cover is added to adjust sensing angle, then adaptability to different installation environments is improved, but device complexity increases
Solution Approach 1:
The lens cover is made rotatable rather than fixed, allowing it to dynamically adjust its orientation. The lens cover can rotate around the sensing element to change the sensing angle and direction, enabling the device to adapt to different installation environments (wall-mounted or ceiling-mounted) without requiring multiple fixed configurations.
Solution Approach 2:
The rotatable lens cover mechanism serves multiple functions: it adjusts the sensing angle, defines the sensing area, and adapts the device to different installation positions. This single component performs what would otherwise require multiple separate adjustment mechanisms or multiple specialized devices.
2Measurement precision
If complicated rotation mechanisms are employed to adjust sensing angle, then sensing direction accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The rotation adjustment mechanism is segmented into discrete angular positions rather than requiring continuous complex adjustments. The lens cover can be rotated to specific predetermined angles that correspond to different installation configurations, simplifying the adjustment process while maintaining accurate sensing direction.
Solution Approach 2:
The lens cover rotation mechanism is designed to be self-adjusting within its rotational range. Once the device is installed, the lens cover can be manually rotated to the appropriate position without requiring complex tools or mechanisms, and it maintains its position through its own structural design rather than requiring additional locking 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
This solution allows for precise adjustment of the sensing angle or direction, enhancing the device's versatility and operational effectiveness across different environments, ensuring optimal automatic control of the lighting behavior.
Implementation Method 1
The lens cover has a lens pattern. When the backside of the host is installed on the wall in a wall-mounting manner, the lens cover is rotated relative to the opening to have the lens cover be in a first state, so that the sensor performs a sensing operation at a first direction angle through the lens pattern
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
An infrared-sensitive lighting device includes a host, a light-emitting module and an infrared sensing module. The light-emitting module is disposed on the host. The infrared sensing module includes a casing, a circuit board, a sensor and a lens cover. The casing is installed on the host and has an opening. The circuit board is disposed within the casing. The sensor is installed on the circuit board and aligned with the opening. The lens cover is rotatably mounted on the opening. The lens cover has a lens pattern. When the lens cover is in a first state, the sensor performs a sensing operation at a first direction angle through the lens pattern. When the lens cover is in a second state, the sensor performs the sensing operation at a second direction angle through the lens pattern.