Image Display Apparatus Illumination Aspect Ratio Adjustment
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Solution Overview
Problem
Existing image display apparatuses struggle to improve image quality on cylindrical screens due to inefficient light utilization and uneven illumination distribution.
Innovation Solution
Incorporating a second optical member within the output unit that adjusts the illumination range of projection light to match the aspect ratio of the first optical member, ensuring optimal alignment and distribution for enhanced light utilization and image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the illumination range of projection light is not adjusted to match the aspect ratio of the first optical member, then the device structure is simpler, but the light utilization efficiency deteriorates
Solution Approach 1:
The second optical member performs preliminary adjustment of the illumination range before the light reaches the first optical member. By pre-matching the aspect ratio of the illumination range to that of the first optical member, the system ensures optimal light utilization without requiring complex real-time adjustment mechanisms, thus resolving the contradiction between energy efficiency and device complexity
Solution Approach 2:
The second optical member changes the spatial parameters of the projection light by adjusting the illumination range to match the aspect ratio of the first optical member. This parameter adjustment optimizes light distribution and utilization efficiency while maintaining a relatively simple optical system structure
2Manufacturing precision
If the illumination range is not optimized for the first optical member, then the device structure is simpler, but the image quality deteriorates
Solution Approach 1:
The illumination range is preliminarily optimized by the second optical member before light interaction with the first optical member. This preliminary optimization ensures that the light distribution matches the required aspect ratio for high-quality image projection, achieving good image quality without overly complicating the device structure
Solution Approach 2:
The second optical member creates localized optimization of the illumination range specifically matched to the first optical member's aspect ratio. This local quality adjustment ensures optimal image projection characteristics in the critical region without requiring complex adjustments throughout the entire optical system
3Illumination intensity
If the illumination range does not match the first optical member's aspect ratio, then the device is easier to manufacture, but the light distribution uniformity deteriorates
Solution Approach 1:
The second optical member performs preliminary adjustment of the illumination range to match the aspect ratio of the first optical member. This preliminary action ensures uniform light distribution across the optical member, reducing the need for complex post-alignment procedures and making the overall system easier to manufacture while maintaining good illumination uniformity
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 configuration significantly improves light utilization efficiency and image quality by ensuring the illumination range is in close contact with the periphery of the first optical member, resulting in uniform and enhanced image projection across the cylindrical screen.
Implementation Method 1
a first optical member disposed opposite to the output unit along the predetermined axis and controlling an incident angle of the projection light to be incident on the irradiation target member
Implementation Method 2
a second optical member included in the output unit and adjusting an illumination range of the projection light to be incident on the first optical member such that the illumination range has an aspect ratio substantially the same as an aspect ratio of an outer shape of the first optical member
Data Source
AI summary
An image display apparatus according to one embodiment of the present disclosure includes: an output unit including a light source and outputting projection light outputted from the light source along a predetermined axis; an irradiation target member to be irradiated with the projection light; a first optical member disposed opposite to the output unit along the predetermined axis and controlling an incident angle of the projection light to be incident on the irradiation target member; and a second optical member included in the output unit and adjusting an illumination range of the projection light to be incident on the first optical member such that the illumination range has an aspect ratio of substantially the same as an aspect ratio of an outer shape of the first optical member.