Reflection Polarizer Optical Path for Faster Laser Recording
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Solution Overview
Problem
Current heat-sensitive recording mediums using laser light for non-contact recording face challenges in improving recording speed and display quality due to inefficient use of laser energy.
Innovation Solution
A laser device and processing method that incorporates a reflection-type polarizer with its transmission axis aligned with the polarization direction of the laser light, allowing for multiple reflections between the polarizer and the object, enhancing laser use efficiency by optimizing the optical path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional laser recording is used without a reflection-type polarizer, then the device structure is simple, but laser use efficiency is low
Solution Approach 1:
A reflection-type polarizer is introduced as an intermediary component in the optical path between the laser light source and the recording medium. This polarizer has its transmission axis aligned with the polarization direction of the laser light, enabling it to reflect unused laser light back toward the recording medium for multiple absorption opportunities, thereby improving laser use efficiency without fundamentally changing the core recording mechanism
Solution Approach 2:
The reflection-type polarizer enables continuous utilization of laser light by reflecting unused portions back to the recording medium. This creates a循环利用 (cyclic utilization) mechanism where laser light that would otherwise be lost is redirected and reused, maintaining continuous useful action and improving overall energy efficiency
2Use of energy by moving object
If laser light is irradiated multiple times to improve absorption, then laser use efficiency increases, but recording time increases
Solution Approach 1:
The reflection-type polarizer is positioned and oriented to create an optimized optical path geometry. By aligning the transmission axis with the laser polarization direction and positioning the polarizer at the appropriate angle, the system achieves efficient light reflection and multiple passes through the recording medium without requiring excessive time, balancing energy efficiency with recording speed
3Productivity
If a reflection-type polarizer is added to improve laser use efficiency, then recording speed and display quality improve, but device complexity increases
Solution Approach 1:
The reflection-type polarizer serves multiple functions simultaneously: it acts as a polarization filter, a beam reflector, and a light path optimizer. By aligning its transmission axis with the laser polarization direction, it performs these multiple functions with a single component, improving recording speed and display quality while minimizing the increase in device complexity
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 configuration significantly improves the absorption of laser light by the recording medium, leading to increased recording speed and display quality while reducing costs by enhancing the overall efficiency of laser usage.
Implementation Method 1
the laser light is multiply reflected between the reflection-type polarizer and the object to be irradiated
Implementation Method 2
a photothermal conversion agent that absorbs infrared rays has been developed. Such a heat-sensitive recording medium allows information to be recorded on the recording layer in a non-contact state by using a photothermal conversion effect
Data Source
AI summary
A laser device according to one embodiment of the present disclosure includes a light source and a reflection-type polarizer. The light source causes laser light to oscillate. The reflection-type polarizer is disposed on an optical path of the laser light and has a transmission axis coinciding with a polarization direction of the laser light.