Optical Device Actuator Configuration for Low Power Display
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Solution Overview
Problem
Existing optical display systems face high power consumption due to the need for high voltages to oscillate actuators for shifting light paths, which limits their efficiency and resolution enhancement capabilities.
Innovation Solution
An optical device with a glass plate oscillating around two axes, using actuators that form angles smaller than 90 degrees with the optical area, allowing for efficient light path shifting with reduced power consumption by operating the actuators independently to achieve high resolution displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two actuators are used to oscillate the glass plate around two perpendicular axes to shift the light path to four positions, then the resolution is improved, but the power consumption increases due to high voltages required for actuator operation
Solution Approach 1:
The patent combines the functions of two actuators into a single actuator by integrating two oscillation mechanisms. The single actuator includes a first oscillation mechanism that oscillates the glass plate around a first axis and a second oscillation mechanism that oscillates the glass plate around a second axis perpendicular to the first axis. This merging reduces the number of actuators from two to one, thereby reducing power consumption while maintaining the ability to shift the light path to four positions for high-resolution display.
2Speed
If high voltages are applied to actuators to achieve rapid light path shifting, then the light path shifting speed is improved, but the power consumption increases
Solution Approach 1:
The patent employs periodic oscillation actions to shift the light path. The single actuator performs sequential oscillations: first oscillating the glass plate around the first axis to shift the light path between two positions, then oscillating around the second axis to shift between other positions. This periodic, sequential oscillation approach achieves rapid light path shifting without requiring continuously high voltages, thereby reducing overall power consumption while maintaining high shifting speed.
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 high-resolution image display with lower power consumption by efficiently shifting the light path using the optical device's unique actuator configuration, improving display quality and reducing operational costs.
Implementation Method 1
a display which oscillates an optical member to shift a light path of image light entering the optical member
Data Source
AI summary
An optical device includes an optical member having an optical area on which light incidents, the optical area having a rectangular shape in a plan view, a first actuator configured to displace the optical member around a first axis which passes through the center of the optical area in the plan view, and which forms an angle smaller than 90° with a first side of the optical area, and a second actuator configured to displace the glass plate around a second axis which passes through the center of the optical area, and which is perpendicular to the first axis.