Integrated Light Emitting and Sensing Module for Compact Projection
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Solution Overview
Problem
Conventional projection apparatuses face challenges in miniaturization due to the need for a significant light path and space occupation, especially when incorporating light detection functions, which limits their integration in portable devices.
Innovation Solution
A photography and projection apparatus with a light emitting and sensing module that integrates light emitting and sensing units on a shared substrate, allowing for both display and detection functions within a compact volume, eliminating the need for a separate light path and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional projection apparatus uses a separate illumination system and light valve with required light path distance, then the illumination beam can be uniformly transmitted onto the light valve, but the overall volume of the apparatus becomes too large for portable devices
Solution Approach 1:
The patent combines the illumination system and light valve into a single integrated module where micro-LEDs are directly coupled with micro-lenses on the same substrate. This eliminates the need for separate illumination paths and light valves, reducing the apparatus volume while maintaining uniform light transmission through the integrated structure.
Solution Approach 2:
The patent transitions from a three-dimensional light path requiring significant distance to a two-dimensional integrated plane where light emitting units and lenses are positioned on the same substrate. This dimensional change enables uniform illumination without requiring large vertical or horizontal spacing, thus reducing overall apparatus volume.
2Adaptability or versatility
If the illumination system includes multiple light sources for full color and light combining devices, then full color image frames can be generated, but the apparatus volume increases significantly
Solution Approach 1:
The patent integrates multiple light emitting units (red, green, blue LEDs) and micro-lenses into a single modular array structure. By combining multiple color channels and optical elements into one integrated unit, the system achieves full color capability without requiring separate light paths and combining devices, thus reducing overall volume.
Solution Approach 2:
The integrated module serves multiple functions simultaneously: it acts as both the illumination source and the light valve, generates full color images, and maintains compact form factor. This multi-functionality eliminates the need for separate components for each function, reducing apparatus volume while preserving full color capability.
3Adaptability or versatility
If light detection function is added to conventional projection apparatus, then dual functionality is achieved, but the light path occupies even more space making miniaturization difficult
Solution Approach 1:
The patent integrates light detection units directly into the same module as the light emitting units and micro-lenses. This combined structure allows the system to perform both projection and light detection functions using shared optical paths and components, achieving dual functionality without requiring separate light paths that would increase volume.
Solution Approach 2:
The integrated module achieves multi-functionality by combining light emission, light modulation, and light detection capabilities in a single compact unit. This universal design enables the apparatus to function as both a projector and a light sensor without increasing volume, as the same physical structure serves multiple purposes.
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 integrated light emitting and sensing module allows for both display and light detection functions in a compact form, reducing the overall volume of the apparatus and enabling its use in portable devices without excessive space occupation, while also enabling real-time image correction and adjustment.
Implementation Method 1
The light emitting unit array includes a plurality of light emitting units arranged in an array, and the light emitting units are distributed in the light emitting and sensing area
Implementation Method 2
The light sensing unit array includes a plurality of light sensing units arranged in an array, and the light sensing units are distributed in the light emitting and sensing area
Data Source
AI summary
A photography and projection apparatus including a light emitting and sensing module and a projection lens is provided. The light emitting and sensing module has a light emitting and sensing area, and includes a light emitting unit array and a light sensing unit array. The light emitting unit array includes a plurality of light emitting units arranged in an array. The light emitting units are distributed in the light emitting and sensing area. The light emitting unit array is adapted to provide an image beam. The light sensing unit array includes a plurality of light sensing units arranged in an array. The light sensing units are distributed in the light emitting and sensing area. The projection lens is disposed on a transmission path of the image beam. A light emitting and sensing module is also provided.