Construction Laser Level Using DPSSL for Improved Visibility
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Solution Overview
Problem
Current construction laser levels with low power visible InGaN green lasers (wavelength 510-535 nm) lack sufficient visibility for construction layout tasks, especially in varying ambient lighting conditions and when lines need to be projected on both floors and ceilings simultaneously.
Innovation Solution
The development of a construction laser level using diode-pumped solid-state lasers (DPSSL) that generates output beams with wavelengths between 537-580 nanometers, specifically 540-575 nanometers, to improve visibility and usability by projecting horizontal and vertical lines on target surfaces, allowing for better visualization and adaptability in different lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If low power InGaN green laser diodes (510-535 nm) are used, then the device is simple and inexpensive, but visibility of projected lines is insufficient
Solution Approach 1:
The patent changes the wavelength parameter from the conventional 510-535 nm InGaN green laser range to 537-580 nm using DPSSL technology. This parameter change results in improved visibility of projected lines while maintaining reasonable device complexity through the use of established DPSSL components.
2Illumination intensity
If higher wavelength beams (537-580 nm) are used, then visibility is improved, but the laser generator becomes more complex
Solution Approach 1:
The patent replaces the conventional InGaN laser diode system with a diode-pumped solid-state laser (DPSSL) system. This substitution uses a different physical mechanism (optical pumping of solid-state gain medium instead of direct laser diode emission) to achieve the desired wavelength range and improved visibility.
3Ease of operation
If conventional laser power is used, then the device is simple to operate, but lines cannot be seen clearly in varying ambient lighting conditions
Solution Approach 1:
The patent changes the operational parameters by using DPSSL technology to generate beams in the 537-580 nm wavelength range, which provides improved visibility in varying ambient lighting conditions while maintaining ease of operation through automated leveling and projection functions.
4Illumination intensity
If low power lasers are used, then energy consumption is low, but visibility from farther distances is insufficient
Solution Approach 1:
The patent changes the wavelength parameter to 537-580 nm using DPSSL, which improves visibility from farther distances. The energy consumption remains manageable as DPSSL technology, while achieving better projection distance performance.
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 higher wavelength output beams enhance visibility of projected lines and dots, enabling the laser level to be used effectively in various construction settings, including simultaneous projection on floors and ceilings, and allowing for better line visibility from farther distances, thus improving construction layout tasks.
Implementation Method 1
A first laser generator is disposed in the housing and is operable to generate a first output beam... A second laser generator is also disposed in the housing and is operable to generate a second output beam... The first output beam projects outside of the housing... A wavelength of the first output beam is in the range of 537 to 580 nanometers
Data Source
AI summary
A construction laser level includes a housing and a gimbal assembly disposed in the housing. The gimbal assembly includes a first laser generator operable to generate a first output beam. The first output beam projects outside of the housing onto a target surface. The gimbal assembly includes a second laser generator operable to generate a second output beam. The second output beam projects outside of the housing onto the target surface. The first output beam projects as a first line on the target surface. The second output beam projects as a second line on the target surface. The first line is generally perpendicular to the second line. A wavelength of the first output beam is in the range of 540 to 575 nanometers.