Tilted Optical Fiber Transceiver With Integrated Prism-Lens Alignment

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Solution Overview

Problem

Existing optical transceivers for short-range communications face challenges with complex optical alignments, increased component count, and Fresnel reflections due to different refractive indices, leading to inefficiencies and reliability issues.

Innovation Solution

An integrated optical system with a transmitter and receiver that combines the functions of a reflection prism and focusing lens, using a single material to simplify alignment and prevent Fresnel reflections, featuring a tilted optical fiber arrangement for easy alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple optical components (collimator lens, reflection prism, focusing lens) are used to achieve light path conversion and focusing, then the optical transmission function is improved, but the device complexity and alignment difficulty increase

Engineering Contradiction:

Improveoptical transmission functionVSAvoidnumber of optical components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the reflection prism and focusing lens into a single integrated optical component. The reflective curved surface is formed on the same substrate as the convex lens, eliminating the need for separate components. This merging reduces the number of optical elements while maintaining the light path conversion and focusing functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated optical component performs multiple functions simultaneously: the convex lens portion provides collimation and focusing, while the reflective curved surface portion provides light path conversion. This multi-functional design eliminates the need for separate collimator, prism, and focusing lens components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple optical components with different refractive indices are used, then the optical transmission function is improved, but Fresnel reflection losses occur at the interfaces

Engineering Contradiction:

Improveoptical transmission functionVSAvoidFresnel reflection loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent uses a single optical material for the entire integrated component, ensuring uniform refractive index throughout. This eliminates interfaces between materials with different refractive indices, thereby preventing Fresnel reflection losses at component boundaries while maintaining optical transmission functionality.

Inventive Principle:

Principle #33Homogeneity

3Reliability

If multiple separate optical components are used, then the optical transmission function is improved, but the alignment precision and manufacturing cost worsen

Engineering Contradiction:

Improveoptical transmission functionVSAvoidoptical alignment precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

By integrating the reflection prism and focusing lens into a single component with a unified substrate, the patent eliminates the need for precise alignment between multiple separate components. The integrated structure ensures fixed relative positions, simplifying manufacturing and reducing alignment precision requirements.

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If multiple optical components are used, then the optical transmission function is improved, but the manufacturing cost increases

Engineering Contradiction:

Improveoptical transmission functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent reduces manufacturing cost by combining multiple optical components into a single integrated element. This reduces the number of manufacturing steps, material inventories, and assembly operations required, while maintaining the necessary optical transmission function through the unified optical design.

Inventive Principle:

Principle #5Merging (Combining)

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 system enables easy optical alignment, reduces component count, and prevents Fresnel reflections, enhancing reliability and cost-effectiveness for short-range optical communications.

Implementation Method 1

a transmitter convex lens formed in a downwardly convex shape on a lower surface of the transmitter body, facing the light source and collimating the incident light emitted from the light source

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

a transmitter reflective curved surface formed as a reflective curved surface on one surface of the transmitter body, reflecting the parallel rays collimated by the transmitter convex lens to focus the light beam reflected from the curved reflective surface into the optical fiber

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 3

does not cause Fresnel reflection through an integrated optical system made of the same medium

Methodology Applied

Scientific EffectFresnel reflection prevention:

Data Source

PatentUS12613384B2Optical transceiver having tilted optical fibers

Publication Date: 2026.04.28 OPTOMIND

AI summary

Embodiments of the present disclosure relate to an optical transceiver, and more particularly to an optical transceiver that includes an optical system capable of simultaneously performing both functions of a reflector and a focusing lens, does not cause Fresnel reflection through an integrated optical system made of the same medium, and furthermore facilitates optical alignment.