Pixel Phase Modulation with Wavelength-Based Reference Adjustment
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Solution Overview
Problem
Existing phase modulation apparatuses suffer from image quality deterioration due to disturbances caused by multiply-reflected light beams, which affect the wavefront of emitted light.
Innovation Solution
A phase modulation apparatus that includes a phase modulation device with multiple pixels, a generation section to generate phase modulation data, and an adjustment section to set a reference phase value based on the light source's wavelength, adjusting the phase modulation range to minimize phase differences among multiply-reflected light beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phase modulation is performed without adjusting for reference phase value, then phase modulation can be applied to any range, but wavefront disturbances occur due to multiply-reflected light beams causing image quality deterioration
Solution Approach 1:
The adjustment section performs preliminary adjustment of the phase modulation amount data before the phase modulation device applies it. By pre-adjusting the data to ensure the phase modulation range includes the reference phase value based on light source wavelength, the system eliminates wavefront disturbances from multiply-reflected light beams before they can affect image quality.
2Reliability
If the phase modulation range does not include the reference phase value, then modulation can be simpler, but multiply-reflected light beams have different phases causing wavefront disturbance
Solution Approach 1:
The adjustment section automatically adjusts the phase modulation amount data generated by the generation section to include the reference phase value. This self-adjusting mechanism ensures wavefront stability without requiring manual intervention or complex external control systems.
3Reliability
If phase modulation amount data is adjusted to include reference phase value, then multiply-reflected light beams have identical phases suppressing wavefront disturbance, but additional processing is required
Solution Approach 1:
The adjustment section is integrated into the phase modulation apparatus, merging the data adjustment function with the phase modulation function. This integration allows the system to perform necessary phase calibration without requiring separate external equipment, balancing image quality improvement with acceptable 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 approach effectively suppresses wavefront disturbances and improves image quality by ensuring identical phases for multiply-reflected light beams, thereby reducing image degradation.
Implementation Method 1
a phase modulation device (100) including a plurality of pixels P and configured to modulate a phase of light from a light source (60)
Implementation Method 2
disturbances caused by multiply-reflected light beams, which affect the wavefront of emitted light
Data Source
AI summary
A phase modulation apparatus according to an embodiment of the present disclosure includes: a phase modulation device including multiple pixels and configured to modulate a phase of light from a light source; a generation section configured to generate first data on a phase modulation amount for each of the multiple pixels; and an adjustment section configured to adjust the first data to cause a phase modulation range to include a reference phase value that is based on a wavelength of light from the light source. The phase modulation device is configured to modulate the phase of light from the light source, based on the first data adjusted by the adjustment section.