Cone Shell Optical System for Sharply Delimited 360° Laser Line
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Solution Overview
Problem
Existing laser systems for generating a 360° laser line suffer from poor visibility due to limited laser power and fail to produce a sharply delimited laser line on a projection surface.
Innovation Solution
The optical system incorporates a further cone optical unit with a cone shell having an opening angle different from 90°, acting as a beam splitting unit to divide the laser beam into transmitted and reflected partial beams, which are then deflected along different paths to generate a sharply delimited 360° laser line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If laser power is limited to prevent eye damage, then safety is improved, but visibility of the laser marking deteriorates
Solution Approach 1:
The patent segments the laser beam into multiple diffraction orders by introducing a conical mirror with specific geometry. The cone vertex creates distinct reflection paths that separate the beam into multiple有序 lines, allowing the total laser power to be distributed across multiple visible lines rather than concentrated in a single dim line, thereby improving visibility while maintaining safety limits.
Solution Approach 2:
The patent transitions from a single-line laser marking to a multi-line marking by utilizing the angular dimension of the conical mirror. The cone's specific opening angle creates diffraction orders that are spatially separated in the angular dimension, transforming a one-dimensional line into a multi-dimensional pattern that increases visible intensity through distribution across multiple angular positions.
2Device complexity
If a conical mirror with 90° opening angle is used, then the laser beam is divided into beam halves, but multiple diffraction orders create adjacent lines instead of a single sharply delimited line
Solution Approach 1:
The patent changes the critical parameter of the conical mirror from a 90° opening angle to a specific range (60°-120°, preferably 70°-110°). This parameter modification alters the diffraction characteristics, ensuring that only the desired beam halves are reflected while suppressing unwanted diffraction orders, thereby producing a single sharply delimited line instead of multiple adjacent lines.
3Area of stationary object
If the laser beam is divided into multiple diffraction orders, then the beam path is expanded, but the lines appear as adjacent lines rather than a single delimited line
Solution Approach 1:
The patent applies local quality by creating different optical paths for different portions of the laser beam. The conical mirror with specific opening angle selectively reflects only the appropriate beam halves while allowing other portions to pass through or be blocked, creating local variations in beam intensity and direction that result in a single sharply delimited line rather than multiple adjacent lines.
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 a sharply delimited 360° laser line with improved visibility, overcoming the limitations of poor visibility and multiple lines in previous systems.
Implementation Method 1
The cone shell of the further cone optical unit is designed in such a way that its opening angle differs from 90° and the cone shell can act as beam splitting optical unit for an incident laser beam. At the cone vertex of the further cone optical unit, an incident laser beam is divided into two beam halves (left and right laser beam)
Implementation Method 2
The two beam halves are each divided into a transmitted and a reflected partial beam. The deflected laser beam is composed of a transmitted partial beam of the one beam half and a reflected partial beam of the other beam half
Implementation Method 3
a laser beam source, which generates a divergent laser beam and emits it along a propagation direction
Implementation Method 4
The occurrence of a plurality of lines is caused by the fact that the laser beam source generates a laser beam having a plurality of orders of diffraction which are diffracted differently at the cone vertex of the conical mirror
Data Source
AI summary
An optical system for generating a 360° laser line includes a first cone optical unit, a second cone optical unit, and a third cone optical unit. The first cone optical unit is configured in a form of a first negative cone section with a first cone axis and has a conical first inner lateral surface with a first opening angle, a conical first outer lateral surface, and a first cone vertex. The second cone optical unit is configured in a form of a second negative cone section with a second cone axis and has a conical second inner lateral surface with a second opening angle and a second outer lateral surface. The third cone optical unit has a third cone axis, a cone shell with an opening angle, and a second cone vertex, where the opening angle of the cone shell differs from 90°.