Laser Beam Alignment with Front-Back Indicia for Perpendicular Aiming
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Solution Overview
Problem
Existing laser devices often fail to project laser beams perpendicularly to a planar surface, leading to incorrect scale indications in laser line projections.
Innovation Solution
A laser alignment device comprising a back member and a front member with indicia, positioned to align the laser beam at right angles to a planar surface, using a back indicia and a front indicia on an imaginary plane shared with the back member, allowing the laser beam to pass through and align with the back indicia to confirm perpendicular alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the laser device is placed without proper alignment tools, then the operation is simple and quick, but the laser beam cannot be ensured to be perpendicular to the planar surface, resulting in incorrect scale indications
Solution Approach 1:
The patent introduces an alignment device as an intermediary tool between the laser device and the planar surface. This device includes a back member with back indicia and a front member with front indicia, which serves as a mediator to establish the perpendicular relationship. The alignment device translates the complex geometric requirement of perpendicularity into simple visual alignment of indicia, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The patent replaces complex mechanical alignment mechanisms with an optical-based visual alignment system. Instead of using mechanical gauges, protractors, or complex adjustment mechanisms, the invention uses laser beams and visual indicia (marks, gaps, slots) that align when the laser beam is perpendicular to the surface. This substitution dramatically simplifies the device structure while maintaining high alignment precision.
2Measurement precision
If the laser beam is not perpendicular to the planar surface, then the device structure remains simple, but the scale indications in the laser line projection become incorrect
Solution Approach 1:
The alignment device provides immediate visual feedback to the operator about the alignment status. When the front indicia and back indicia are properly aligned, it confirms that the laser beam is perpendicular to the planar surface. This feedback mechanism allows the operator to quickly verify and adjust the alignment without complex measurement procedures, improving both scale indication accuracy and ease of operation.
Solution Approach 2:
The alignment device is positioned and configured in advance before the actual laser alignment operation. The front member and back member are pre-positioned at specific distances and orientations to establish the perpendicular reference plane. This preliminary setup eliminates the need for complex real-time calculations or adjustments during the alignment process, making the operation simpler and more accurate.
3Ease of operation
If visual indicia are placed close to each other for easy alignment, then the alignment is easier to achieve, but the depth of the alignment device structure increases
Solution Approach 1:
The patent distributes the indicia along the depth dimension (z-axis) rather than spreading them out laterally. The front indicia are positioned on the front member and the back indicia on the back member, creating a depth-wise arrangement. This dimensional reorganization allows the indicia to be visually aligned from the side while keeping the lateral footprint compact, effectively resolving the contradiction between ease of operation and device depth.
Data Source
AI summary
There is provided a laser alignment device (10) for use between a laser device (5) and a planar surface of an object e.g. wall (20) at which a laser beam (30) is to aim at right angles. The laser alignment device (10) includes a back member (12) for use against or parallel to the wall surface, which includes a back indicia (22). Also included is a front member (14) having a front indicia (16) on an imaginary plane shared with the back indicia (22) and perpendicular to the back member (12). The front indicia (16) is positioned for access by the laser beam (30) to reach the back indicia (22) when the laser beam (30) is aligned to aim at the wall surface at right angles.