Stepper Motor Rotary Laser for Low Power Bright Markings
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Solution Overview
Problem
Existing rotary construction lasers face challenges in achieving low power consumption and long service life while generating bright, visible laser markings, especially when operating in partial areas and requiring independent power supply.
Innovation Solution
The use of a stepper motor to rotate a deflection device, such as a prism, for precise control of laser beam direction and intensity, allowing for incremental rotation and adjustable rotational speed to concentrate light on specific areas, combined with a control device for specifying rotation angles and frequencies to create visible and flicker-free markings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a direct current motor is used to rotate the deflection device, then continuous rotational motion is achieved, but power consumption increases and service life decreases
Solution Approach 1:
The patent applies periodic action by using a stepper motor to rotate the deflection device only when laser markings need to be generated, rather than maintaining continuous rotation. The motor can be switched off during idle periods, significantly reducing power consumption and extending battery service life while still achieving the required functional effect when needed
2Illumination intensity
If the laser beam is projected continuously across the entire area, then complete coverage is achieved, but visibility in partial areas decreases
Solution Approach 1:
The patent applies local quality by enabling the deflection device to concentrate the laser beam on specific partial areas rather than distributing it uniformly across the entire space. The stepper motor allows precise positioning of the deflection device to target specific work areas, increasing illumination intensity and visibility where needed while reducing coverage in non-work areas
3Illumination intensity
If the laser source is made stronger to improve visibility, then marking brightness increases, but power consumption and safety issues worsen
Solution Approach 1:
The patent applies continuity of useful action by using a stepper motor to maintain precise positioning of the deflection device, ensuring the laser beam continuously concentrates on the target marking areas without interruption or drift. This maintains high visibility and marking quality throughout operation without requiring increased laser source power, thereby avoiding safety hazards
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 enables the generation of bright, visible laser markings with low power consumption, preventing flickering and migration, and allowing for the use of cost-effective, weak laser sources while meeting safety standards, thus extending the service life and improving visibility.
Implementation Method 1
A stepper motor is a synchronous motor, which can generate a rotative driving torque through a controlled, incrementally rotating electromagnetic field
Implementation Method 2
the deflection device may have a prism, such as a pentaprism, for example, through which the incident laser light can be deflected at a predefined angle, such as 90° for example
Data Source
AI summary
A rotary construction laser is disclosed. The rotary construction laser having a deflection device rotatably mounted around an axis of rotation for emitting laser light as well as a stepper motor for rotating the deflection device around the axis of rotation.