Optical Transceiver Housing with Segmented Lens Alignment
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Solution Overview
Problem
Conventional optical transceivers for mobile communication devices are bulky, costly, and unstable due to complex structures, and face challenges in miniaturization while maintaining efficient light transmission and reception, leading to alignment errors and optical losses.
Innovation Solution
The development of optical transmitting and receiving devices with a divided housing structure and a lens group comprising multiple lenses, aligned using a substrate with posts, which reduces size, alignment errors, and manufacturing costs, while ensuring efficient light transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens unit diameter or thickness is reduced to meet the 1mm height requirement, then the device height is reduced, but the light concentration ratio drops and optical transmission performance is inhibited
Solution Approach 1:
The patent divides the housing into a body and a cover, with the lens unit positioned between them. This segmentation allows the lens unit to be precisely positioned and secured without being constrained by the overall housing height, enabling miniaturization while maintaining optical performance through precise lens positioning and focusing capability
Solution Approach 2:
The patent utilizes the vertical space between the body and cover to position the lens unit, effectively using the third dimension (height) to accommodate the optical components without increasing the lateral footprint. This allows the lens unit to maintain its focusing capability while the overall device height is controlled at under 1mm
2Volume of moving object
If the device external dimension is reduced while maintaining lens unit size, then the device is miniaturized, but optical loss at the reflector increases and refraction angle changes cause structural misalignment
Solution Approach 1:
The patent incorporates a positioning protrusion on the lens unit that preliminarily aligns with a positioning groove in the housing body before final assembly. This preliminary positioning action ensures correct optical alignment is established before the cover is attached, preventing misalignment issues that would arise from reduced device dimensions
Solution Approach 2:
The positioning groove and positioning protrusion act as intermediary elements that mediate between the lens unit and the housing body. These intermediaries ensure precise alignment and positioning of the lens unit within the compact housing, maintaining optical stability despite the reduced device volume
3Reliability
If a conventional optical alignment method is used, then optical transmission can be achieved, but the device is bulky, costly, and structurally unstable
Solution Approach 1:
The patent merges the housing structure with the optical alignment function by integrating the positioning groove directly into the housing body and the positioning protrusion onto the lens unit. This combination eliminates the need for separate alignment mechanisms, reducing device complexity while maintaining reliable optical transmission through the built-in positioning features
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 solution enables sub-miniaturization of optical devices with reduced alignment errors and manufacturing costs, achieving efficient light transmission and reception while maintaining durability and optical path integrity.
Implementation Method 1
a first lens configured to modify a diverging beam of light emitted from a light source into a parallel beam of light
Implementation Method 2
a reflector arranged above the first lens and configured to reflect light from the first lens
Implementation Method 3
a second lens configured to collect the light from the reflector and transmit the light to an optical fiber
Data Source
AI summary
Embodiments according to the present disclosure relate to an optical transmitting device and an optical receiving device which can minimize the alignment error between the light source and the photodetector on the substrate, miniaturize the devices, and require no separate guide member reducing manufacturing costs, while satisfying the design requirements for sub-miniaturization, and performing optical transmission and reception more efficiently.