Miniaturized Illumination Module for Head-Mounted Displays
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Solution Overview
Problem
Existing illumination modules for head-mounted displays are bulky due to the large size of integration rods or micro lens arrays, and the inclusion of light-collecting elements further increases volume, limiting their applications.
Innovation Solution
The illumination module incorporates a light-emitting unit with a light-emitting element array and a focusing lens array, where each light-emitting element corresponds to at least one focusing lens, allowing for miniaturization and efficient energy distribution control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an integration rod or micro lens array is used to transform light beam energy distribution, then uniform lighting is achieved, but the volume of the illumination module becomes relatively large
Solution Approach 1:
The patent segments the illumination module into multiple light-emitting elements arranged in an array, with each element having its own light-collecting element and focusing lens. This segmentation allows for a more compact overall structure compared to using a single large integration rod or micro lens array, while still achieving uniform lighting distribution across the target area.
2Use of energy by moving object
If a light-collecting element such as a collimating lens is added to collect light beams, then light collection efficiency is improved, but the overall volume of the illumination module increases
Solution Approach 1:
The patent combines the light-collecting function and light-emitting function into a single integrated unit for each element. The light-collecting element and light-emitting element are positioned in close proximity, eliminating the need for separate large-volume light collection components. This merging approach maintains high light collection efficiency while significantly reducing the overall module volume.
3Volume of stationary object
If the illumination module is miniaturized, then applications in head-mounted displays are enabled, but the complexity of achieving uniform lighting increases
Solution Approach 1:
The patent applies local quality by giving each light-emitting element its own dedicated light-collecting element and focusing lens, rather than using a single centralized system. This localized approach allows for precise control of light distribution from each element, simplifying the overall design while achieving uniform lighting and enabling miniaturization for head-mounted display applications.
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 achieves miniaturization of the illumination module, enabling wider applications, including in head-mounted displays, while improving user experience by reducing the weight and increasing the efficiency of the lighting system.
Implementation Method 1
The light-emitting elements are used for generating a plurality of light beams
Implementation Method 2
The focusing lens array includes a plurality of focusing lenses. Each of the light-emitting elements corresponds to at least one of the focusing lenses
Data Source
AI summary
An illumination module is provided. The illumination module includes a light-emitting unit. The light-emitting unit includes a light-emitting element array and a focusing lens array. The light-emitting element array includes a plurality of light-emitting elements. The light-emitting elements are used for generating a plurality of light beams. The focusing lens array includes a plurality of focusing lenses. Each of the light-emitting elements corresponds to at least one of the focusing lenses.