Chalcogenide glass, preparation method thereof, optical element and infrared thermal imaging device
By adjusting the proportion of components and preparation technology of sulfur-based glass, the problem of insufficient refractive index of sulfur-based glass is solved, and sulfur-based glass with high transmittance and stability is achieved, which expands its application in infrared optical systems and reduces costs.
CN120271225APending Publication Date: 2025-07-08NINGBO SUNNY INFRARED TECH COMPANY
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Patent Information
- Application Number
- CN202410023702.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2025-07-08
AI Technical Summary
Technical Problem
The refractive index of existing sulfur-based glass is lower than that of germanium glass, limiting its application in infrared optical systems.
Method used
By adjusting the proportion of components of sulfur-based glass, especially the mole percentage of germanium, arsenic, tellurium and selenium, sulfur-based glass with a refractive index greater than 3 and a uniform one is prepared. Combined with vacuum smelting and annealing processes, the high transmittance and stability of the glass is ensured.
Benefits of technology
The refractive index of sulfur-based glass is increased, making it more widely used in the infrared band, and can replace germanium glass and reduce the cost of infrared optical systems.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses chalcogenide glass and a preparation method thereof, an optical element and an imaging device. The chalcogenide glass comprises the following constituent elements: germanium (Ge) with the molar percentage of 5 mol% to 15 mol%; arsenic As, the molar percentage of which is 40 mol% to 55 mol%; tellurium (Te), the molar percentage of which is 30 mol% to 50 mol%; and selenium Se, the molar percentage of which is 0.1 mol% to 10 mol%. The refractive index of the chalcogenide glass in the infrared band is larger than 3, and the refractive index is uniform. The refractive index of the chalcogenide glass can be improved, the application scene of the chalcogenide glass is expanded, germanium glass can be replaced by the chalcogenide glass in an infrared optical system using the germanium glass, and therefore the cost of the infrared optical system can be reduced.
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