Movable Laser Deflection Assembly for Wider Depth Camera Field of View
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Solution Overview
Problem
Increasing the field of view of laser beams in depth cameras leads to increased electric power consumption and overheating issues due to higher optical power requirements, which affects the long-term operation and performance of the camera.
Innovation Solution
A laser emitter design that includes a movable laser deflection assembly with lens arrays to adjust the angle of deviation of the laser beam, allowing for increased field of view without increasing optical power, thus preventing overheating and maintaining power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the optical power of the laser beam is increased to increase the field of view, then the field of view is improved, but the electric power consumption increases and heat generation increases
Solution Approach 1:
The patent applies the dynamics principle by making the laser deflection assembly movable relative to the beam outlet. The assembly can be translated along the center line of the laser beam to dynamically adjust the angle of deviation of the emitted laser beam. This dynamic adjustment capability allows the system to change the field of view without increasing optical power, as the same laser beam can be redirected to cover different angular ranges.
Solution Approach 2:
The patent changes the parameter of beam deviation angle by translating the laser deflection assembly along the center line of the laser beam. By adjusting the position of the deflection assembly, the angle at which the laser beam is emitted can be modified, thereby expanding or contracting the field of view without requiring increased optical power. This parameter change approach resolves the contradiction between field of view and power consumption.
2Area of stationary object
If the electric power of the laser emitter is increased to increase the field of view, then the field of view is improved, but the heat generation increases and heat dissipation requirements increase
Solution Approach 1:
The movable laser deflection assembly enables dynamic control of beam direction without power increase. By translating the assembly along the center line, the system can redirect the laser beam to achieve different fields of view while maintaining constant optical power output, thereby preventing additional heat generation that would result from power scaling.
Solution Approach 2:
The laser deflection assembly acts as an intermediary between the laser emitter and the target space. Instead of increasing power to expand field of view, the assembly mediates by deflecting the existing laser beam at different angles, allowing the same power output to cover different angular ranges. This intermediary mechanism avoids the heat generation problem associated with power scaling.
3Area of stationary object
If the optical power is increased to expand the field of view, then the field of view is improved, but the long-time operation capability deteriorates
Solution Approach 1:
The dynamic translation of the laser deflection assembly along the center line enables continuous adjustment of beam deviation angles without power increases. This dynamic capability allows the depth camera to operate indefinitely at constant power levels, improving long-time operation capability while maintaining flexible field of view control through angular adjustment rather than power scaling.
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 solution enables a larger field of view with controlled deflection of laser beams, ensuring long-term operation and maintaining power efficiency by avoiding the need for increased electric power, thus enhancing the performance and longevity of the depth camera.
Implementation Method 1
the laser deflection assembly is configured to change an angle of deviation of the laser beam emitted from the beam outlet when the laser deflection assembly is translated relative to the beam outlet
Data Source
AI summary
A laser emitter includes an emitting assembly and a laser deflection assembly, wherein the emitting assembly that has a beam outlet, and the beam outlet is configured to emit a laser beam, the laser deflection assembly that is at the beam outlet and is movable relative to the beam outlet, the laser deflection assembly is configured to change an angle of deviation of the laser beam emitted from the beam outlet when the laser deflection assembly is translated relative to the beam outlet, and an included angle is between a translation direction of the laser deflection assembly and a center line of the laser beam emitted from the beam outlet.