Short-Distance Optical Amplification Module Inversion
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Solution Overview
Problem
Existing short-distance optical amplification modules suffer from chromatic dispersion, leading to light loss and compromised imaging quality due to the sequence of refraction and reflection, which affects the quality of light reflection imaging.
Innovation Solution
A short-distance optical amplification module comprising a reflective type polarizing plate, a first phase delay plate, an imaging lens, a second phase delay plate, and an absorptive type polarizing plate, where the optical image passes through these components in a specific sequence to convert polarization directions, avoiding chromatic dispersion by reflecting and refracting light without initial refraction, thereby enhancing light utilization and imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If light is transmitted through a transflective curved lens from one side of the first phase delay plate and then reflected by the reflective type polarizing plate, then optical path amplification is achieved, but chromatic dispersion occurs causing light loss and degraded imaging quality
Solution Approach 1:
The patent inverts the conventional optical path sequence by placing the reflective type polarizing plate at the light source side instead of at the imaging side. This inversion causes light to be reflected first and then refracted finally, eliminating chromatic dispersion that occurs when light is refracted first and then reflected. The inverted arrangement maintains optical path amplification while preventing light loss and preserving imaging quality.
Solution Approach 2:
The patent changes the polarization state parameter of light through phase delay plates (converting linear polarization to circular/elliptical polarization and back). This parameter transformation enables the light to pass through the reflective type polarizing plate multiple times with different polarization states, achieving optical path amplification without chromatic dispersion and improving light utilization efficiency.
2Illumination intensity
If the reflective type polarizing plate is placed at the imaging side to amplify optical path, then light reflection is enhanced, but chromatic dispersion degrades the quality of light reflection imaging
Solution Approach 1:
The patent inverts the conventional arrangement by placing the reflective type polarizing plate at the light source side rather than at the imaging side. This inversion maintains strong light reflection intensity while eliminating chromatic dispersion, as light is reflected before refraction occurs. The imaging quality is preserved because the reflective plate is positioned where it cannot introduce dispersion into the final image.
Solution Approach 2:
The phase delay plates serve as intermediaries that transform the polarization state of light between the reflective type polarizing plate and the imaging lens. This mediation enables the light to undergo multiple reflections and refractions without chromatic dispersion, maintaining both high light reflection intensity and high imaging quality.
3Length of stationary object
If conventional optical components are used in sequence, then optical path amplification is achieved, but the module size and weight increase
Solution Approach 1:
The patent merges multiple optical functions into a compact integrated module. The reflective type polarizing plate, phase delay plates, and imaging lens are arranged in a integrated configuration that achieves optical path amplification in a short distance. This merging of functions reduces the overall module size and weight compared to conventional separate-component systems.
Solution Approach 2:
The inverted arrangement of optical components optimizes the optical path for compactness. By reflecting light first and then refracting it, the patent achieves efficient optical path amplification in a shorter physical distance, reducing the module size and weight while maintaining the required optical performance.
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 prevents light loss from chromatic dispersion, improves light utilization, and maintains high imaging quality by reflecting and refracting light in a manner that minimizes chromatic dispersion, resulting in a more efficient optical amplification system with reduced module size and weight, suitable for applications like VR glasses.
Implementation Method 1
a reflective type polarizing plate, which is arranged on a transmission path of an optical image having a first linear polarization direction and has a transmission direction consistent with the first linear polarization direction
Implementation Method 2
the first phase delay plate is arranged on the transmission path of the optical image passing through the reflective type polarizing plate and configured for converting the polarization direction of the optical image from the first linear polarization direction to an elliptical or circular polarization direction
Implementation Method 3
the imaging lens is arranged on the transmission path of the optical image having the elliptical or circular polarization direction and comprises a second optical surface adjacent to the first phase delay plate and a first optical surface opposite to the second optical surface, the first optical surface being a transflective optical surface, and is configured for amplifying an optical image passing through the first optical surface
Implementation Method 4
the absorptive type polarizing plate is arranged on one side of the second phase delay plate that faces away from the imaging lens and has a transmission direction consistent with the first linear polarization direction
Data Source
AI summary
Disclosed are a short-distance optical amplification module, method and system. The module comprises a reflective type polarizing plate, a first phase delay plate, an imaging lens, a second phase delay plate and an absorptive type polarizing plate, arranged successively. The reflective type polarizing plate is arranged on a transmission path of an optical image. The first phase delay plate is arranged on the transmission path of the optical image passing through the reflective delay plate. The imaging lens is arranged on the transmission path of the optical image. The second phase delay plate is configured for converting a polarization direction of the optical image from an elliptical or circular polarization direction to a second linear polarization direction. The absorptive type polarizing plate is arranged on one side of the second phase delay plate that faces away from the imaging lens.