Distant-View Display Polarization Layout for Higher Light Utilization
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Solution Overview
Problem
Existing distant-view display apparatuses suffer from low light utilization due to light passing through the display panel twice and have a large thickness due to the need for a large longitudinal depth of the curved imaging mirror.
Innovation Solution
The apparatus incorporates a reflection polarizing layer on the display panel and a reflection assembly that changes the polarization direction of light, allowing it to pass through the display panel only once and reducing thickness by positioning the image generation unit and reflection assembly on opposite sides of the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If light passes through the display panel twice in existing distant-view display apparatus, then the imaging function is achieved, but light utilization is low
Solution Approach 1:
A reflection polarizing layer is introduced as an intermediary component between the display panel and the image generation unit. This layer selectively reflects polarized light back through the display panel, enabling the light to be reused and pass through the display panel only once effectively, thereby improving light utilization without significantly increasing structural complexity
Solution Approach 2:
The reflection polarizing layer recovers and redirects polarized light that would otherwise be lost or wasted. By reflecting the polarized light back through the display panel, the system recycles the light path, reducing the number of times light must pass through the display panel and improving overall light efficiency
2Length of moving object
If the curved imaging mirror is provided with large longitudinal depth, then the distant viewing effect is achieved, but the thickness of the apparatus becomes large
Solution Approach 1:
The system transitions from relying solely on the longitudinal depth of a curved imaging mirror to using a reflection polarizing layer that operates in a different dimensional arrangement. By positioning the reflection polarizing layer at a specific orientation and using polarization optics, the system achieves the necessary optical path length and imaging function without requiring excessive thickness in the traditional mirror depth direction
Solution Approach 2:
The patent replaces the traditional mechanical curved imaging mirror structure with an optical solution using a reflection polarizing layer. This substitution eliminates the need for a large-depth curved mirror while achieving the same distant viewing effect through polarization-based light redirection and the display panel's optical properties
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 design enhances light utilization and reduces the apparatus thickness, enabling a more efficient and compact distant-view display.
Implementation Method 1
a reflection polarizing layer is provided at one side of the display panel towards the reflection assembly; a first linearly polarized light emitted from the image generation unit is configured to pass through the display panel and the reflection polarizing layer in sequence and is transmitted to the reflection assembly; the reflection assembly is configured to change a polarization direction of the first linearly polarized light to form a second linearly polarized light and reflect the second linearly polarized light to the reflection polarizing layer, and the second linearly polarized light is reflected by the reflection polarizing layer and is emitted from the housing
Data Source
AI summary
A distant-view display apparatus includes: a housing formed with an accommodation chamber; a reflection assembly provided in the accommodation chamber; an image generation unit provided in the accommodation chamber; and a display panel provided between the reflection assembly and the image generation unit. A light-emitting direction of the image generation unit is towards the reflection assembly; a reflection polarizing layer is provided at one side of the display panel towards the reflection assembly; a first linearly polarized light emitted from the image generation unit is configured to pass through the display panel and the reflection polarizing layer in sequence and is transmitted to the reflection assembly; and the reflection assembly is configured to change a polarization direction of the first linearly polarized light to form a second linearly polarized light and reflect the second linearly polarized light to the reflection polarizing layer.