Fused Metal Sight Window Manufacturing Around High-Temperature Optics

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Solution Overview

Problem

Existing methods for manufacturing fused glass sight windows are limited by the need for materials with low melting points, excluding high-temperature optical materials like fused silica, aluminosilicate, sapphire, and sintered materials, which are damaged or structurally compromised when melted.

Innovation Solution

A method involving melting a metal frame around a high-temperature optical material, rather than the traditional approach of melting glass into a metal frame, ensuring the optical material is not damaged and achieving a strong fusion by compressive forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If glass is melted into a metal frame using traditional methods, then the sight window is formed with the glass fused to the frame, but the optical material is damaged or structurally compromised when melted

Engineering Contradiction:

Improvestructural integrity of optical materialVSAvoidmanufacturing process feasibility

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent inverts the traditional manufacturing process by melting the metal frame instead of melting the glass. The metal frame is heated to its melting point and poured around the optical material, allowing the material to be formed without subjecting it to high temperatures that would damage its structure. This resolves the contradiction by enabling manufacturing feasibility while preserving the structural integrity of the optical material.

Inventive Principle:

Principle #13The other way round (Inversion)

2Temperature

If high-temperature optical materials like fused silica, aluminosilicate, sapphire, or sintered materials are used, then the sight window can withstand harsh environments, but these materials cannot be melted without destroying their crystal structure

Engineering Contradiction:

Improvewithstand temperatureVSAvoidmanufacturing process compatibility

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

The patent applies inversion by reversing the conventional approach of melting glass into metal. Instead, the metal frame is melted and poured around the high-temperature optical material. This allows the material to retain its crystal structure and withstand high temperatures while still enabling the manufacturing process to proceed successfully.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the temperature parameter profile by controlling the metal frame temperature to melt at a specific point and then cooling it to form the structure. This parameter control allows the optical material to remain at lower temperatures during processing, preserving its high-temperature withstanding capability while enabling manufacturing.

Inventive Principle:

Principle #35Parameter changes

3Strength

If the metal frame is melted and fused around the window, then the window is compressed and strengthened by the contracting metal, but the process requires precise temperature control to avoid damaging the optical material

Engineering Contradiction:

Improvecompression strength of windowVSAvoidtemperature control precision

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by carefully controlling the temperature profile - heating the metal frame to its melting point, maintaining it there briefly for fusion, then rapidly cooling it to form the compressed structure. This precise parameter control achieves the desired compression strength while preventing damage to the optical material.

Inventive Principle:

Principle #35Parameter changes

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

Enables the production of robust sight windows using high-temperature optical materials by compressing them with a metal frame, enhancing durability and strength without using seals, suitable for harsh environments.

Implementation Method 1

heating the window and frame until the frame melts and fuses with the window

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 2

the metal frame contracts around the disk as it cools, compressing the disk and making it stronger

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Implementation Method 3

heating the window and frame until the frame melts and fuses with the window

Methodology Applied

Scientific EffectHeating: Heating

Data Source

PatentUS20250333356A1Method for manufacturing a fused metal sight window with a high flow temperature optical material

Publication Date: 2025.10.30 RAYOTEK SCIENTIFIC INC

AI summary

A method for manufacturing a fused metal sight window that melts the metal of the frame around the window, instead of the traditional method of melting the window into the frame. Since most of the superior optical transparent materials (such as fused silica, sapphire, YAG, ALON, diamond, fused quartz and magnesium fluoride) have a melting point higher than most metals, it was not previously possible to create fused metal sight windows with these materials. By melting the frame onto the window, many new combinations of metals and optical materials may be used while retaining the strength of the sight window that results from fusing the metal and the window.