High Refractive Index Light-Transmitting Part for Microlens Resolution
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Solution Overview
Problem
Existing imaging systems with microlens arrays face challenges in achieving high resolution due to the larger image diameter formed by smaller microlenses, leading to lower imaging resolution.
Innovation Solution
The implementation of a microlens array with a first light-transmitting part having a refractive index greater than the ambient medium, which shortens the light wavelength and reduces the image diameter, thereby enhancing the imaging resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If smaller microlenses are used to increase pixel density, then the pixel density is improved, but the image diameter increases leading to lower imaging resolution
Solution Approach 1:
The patent introduces a light-transmitting part with a refractive index higher than the surrounding medium, which changes the optical parameters of the system. This causes light to bend more sharply and form a smaller image diameter on the photosensitive element, thereby improving imaging resolution even when using smaller microlenses for high pixel density
Solution Approach 2:
The light-transmitting part acts as an intermediary component between the microlens and the photosensitive element. It modifies the light path by refracting light at its interfaces, effectively controlling the image diameter and improving resolution without directly changing the microlens size or photosensitive element structure
2Measurement precision
If a light-transmitting part with high refractive index is introduced to reduce image diameter, then imaging resolution is improved, but the device structure becomes more complex
Solution Approach 1:
The light-transmitting part serves multiple functions simultaneously: it acts as a structural support layer, provides optical refraction to reduce image diameter, and can be integrated with existing microlens and photosensitive element structures. This multi-functionality justifies the additional structural element by providing multiple benefits from a single component
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 improves the resolution of the imaging system by forming an object image with a smaller diameter, while also reducing light interference between adjacent microlenses.
Implementation Method 1
a first light-transmitting part, the first light-transmitting part is arranged on the first microlens array, and the first light-transmitting part transmits the light propagating in the ambient medium to the first microlens array wherein, the refractive index of the first light-transmitting part is greater than the refractive index of the ambient medium
Data Source
AI summary
The present disclosure provides an imaging system having a microlens array, a photoelectric conversion device, and a manufacturing method. The microlens array includes a first microlens array and a first light-transmitting part, and the first light-transmitting part is disposed on the first microlens array, the refractive index of the first light-transmitting part is greater than the refractive index of the ambient medium. A first light-transmitting part with a high refractive index is arranged on the first microlens array to change the wavelength of the incident light, so that the light with a shorter wavelength is imaged by the first microlens array to form an object image with a smaller diameter in its image size, thereby increasing the resolution of the imaging system.