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Zinc Sulfide Lens
Optical Material

Zinc Sulfide Lens

Supplier
Scysgx
Category
Optical Material
Origin
China

Zinc sulfide(ZnS) is a high-performance IR material usable from visible to mid-IR, with broad transmission, moderate mechanical strength, excellent chemical stability, and environmental adaptability. Applications include thermal imaging, medical IR optics, security monitoring, lasers, and research instruments. Scysgx uses high-purity single-crystal CVD zinc sulfide substrates, more than 260 precision-processing machines, and 65 specialist inspection instruments for closed-loop cutting, grinding, polishing, coating, and inspection. plano-convex, biconvex, plano-concave, meniscus, focusing, and collimating lenses span 1–500mm, with surface accuracy up toλ/10. It provides precise, highly stable lenses for broadband IR systems.

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Overview

Zinc sulfide(ZnS) is a high-performance IR material usable from visible to mid-IR, with broad transmission, moderate mechanical strength, excellent chemical stability, and environmental adaptability. Applications include thermal imaging, medical IR optics, security monitoring, lasers, and research instruments. Scysgx uses high-purity single-crystal CVD zinc sulfide substrates, more than 260 precision-processing machines, and 65 specialist inspection instruments for closed-loop cutting, grinding, polishing, coating, and inspection. plano-convex, biconvex, plano-concave, meniscus, focusing, and collimating lenses span 1–500mm, with surface accuracy up toλ/10. It provides precise, highly stable lenses for broadband IR systems.

Specifications

ParameterValue
Material [Standard Specifications]High-Purity Zinc Sulfide (ZnS)
Diameter Range [Standard Specifications]1–500mm
Diameter Tolerance [Standard Specifications]±0.01mm
Center Thickness Tolerance [Standard Specifications]±0.02mm
Surface Figure Accuracy [Standard Specifications;@632.8nm]0.5λ
Surface Quality [Standard Specifications]60/40
Decentration [Standard Specifications]±1′
Chamfer [Standard Specifications]0.2–0.5mm×45°
Applicable Wavelength Band [Standard Specifications]400nm–12000nm
Material [High-Precision Grade Specifications]High-Purity Zinc Sulfide (ZnS)
Diameter Range [High-Precision Grade Specifications]1–500mm
Diameter Tolerance [High-Precision Grade Specifications]±0.01mm
Center Thickness Tolerance [High-Precision Grade Specifications]±0.01mm
Surface Figure Accuracy [High-Precision Grade Specifications;@632.8nm]λ/10
Surface Quality [High-Precision Grade Specifications]60/40
Decentration [High-Precision Grade Specifications]±0.5′
Chamfer [High-Precision Grade Specifications]0.2–0.5mm×45°
Applicable Wavelength Band [High-Precision Grade Specifications]400nm–12000nm

Applications

Infrared thermal imaging: security cameras, industrial thermometry, vehicle infrared and outdoor night-vision lenses. Medical: infrared diagnosis, thermal screening and noninvasive detection paths. Lasers: mid-infrared focusing, collimation and beam delivery. Industry/detection: infrared spectroscopy, exploration instruments and high-temperature monitoring. Research/aviation: infrared microscopy, laboratory optics and airborne infrared detection.

Key Features

Broadband high transmission: stable, uniform visible-to-longwave-IR transmission over 400nm–12000nm (0.4–12μm). Strong mechanical/environmental adaptability: chemically inert and humidity/dust resistant for harsh outdoor/industrial use. Ultraprecision fabrication: tolerance ±0.01mm, surface figure to λ/10, surface quality 60-40 and distortion-free imaging. Full structures: spherical/aspheric, plano-convex/biconvex/plano-concave/meniscus. Broadband coatings: infrared AR, DLC and broadband AR. Stable imaging: uniform index/low IR scattering for precision infrared systems. IV. Material advantages. Coverage 0.4μm (visible)–12μm (longwave IR), excellent 8–12μm transmission. Stable index, low scatter/high contrast for thermal imaging. Expansion coefficient 7.6, softening temperature 1525℃, strong stability without significant deformation. Knoop hardness 120, reliable strength, impact/wear resistance and long life. Insoluble in water, acid/alkali/humidity resistant for stable complex-environment use. V. Available structures: plano-convex, biconvex, plano-concave, biconcave, meniscus, collimating, focusing and aspheric lenses. VI. Coatings. Mid-IR AR: dedicated 3–5μm, 8–12μm and 2–14μm. Broadband AR: full-band 0.4–12μm improves visible/IR dual-mode transmission. DLC increases hardness, contamination/scratch resistance and life. High-laser-damage-threshold coatings improve strong-laser tolerance in mid-IR systems. VIII. Yasi Optical advantages. Fully controlled in-house closed-loop cutting → milling/grinding → polishing → coating → inspection, with full traceability. Precision equipment: ZYGO interferometers, Nikon precision goniometers and optical dimensional instruments for comprehensive quality control. Large sizes: batch 1–500mm large-aperture zinc sulfide lenses for high-end systems. One-stop dimensions, structures, focal lengths and coatings with optical-path support. High-reliability medical/industrial compatibility supports medical-infrared compliance. IX. Quality assurance. All zinc sulfide lenses undergo ZYGO interferometric figure, optical dimensional, infrared-transmission and surface-quality inspections to ensure 100% optical and dimensional compliance. Automated ultrasonic ultraclean washing and vacuum moisture-proof packaging ensure transport and long-term stability.

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Supplier Information

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Scysgx
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Sichuan Yasi Optics is a source factory focusing on the R&D and manufacturing of optical components, which has rapidly emerged as a benchmark enterprise in the industry that combines innovation and quality. The company's core business focuses on the customized production of various optical components such as optical prisms, optical lenses, optical windows, laser lenses, etc. The products are widely suitable for application needs in multiple industries including medical, manufacturing, and scientific research. In terms of material selection, we support diverse substrates such as NBK7, quartz, sapphire, germanium, molybdenum, copper, zinc sulfide, fluoride, gallium arsenide, etc., to meet performance requirements in different scenarios. Relying on more than 260 processing equipment and 13 professional testing equipment, we have built a complete processing chain from cutting, grinding, polishing, coating to inspection and delivery. We can not only achieve rapid delivery of small and large batch products, but also precisely meet the personalized production needs of different customers.

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