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Calcium Fluoride Lens
Optical Material

Calcium Fluoride Lens

Supplier
Scysgx
Category
Optical Material
Origin
China

Calcium fluoride(CaF₂) combines high UV transmission, broad IR response, ultralow dispersion, and high chemical stability, with excellent performance from deep UV through visible and near-IR to mid-IR. Scysgx uses high-purity single-crystal calcium fluoride substrates, 260 precision-processing machines, and 65 specialist inspection instruments for full in-house development and production. plano-convex, biconvex, plano-concave, meniscus, collimating, and focusing lenses span 1–500mm, with surface accuracy up toλ/10. It supplies precision optics for UV systems, IR detection, laser equipment, spectroscopy, medical diagnosis, and research.

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Overview

Calcium fluoride(CaF₂) combines high UV transmission, broad IR response, ultralow dispersion, and high chemical stability, with excellent performance from deep UV through visible and near-IR to mid-IR. Scysgx uses high-purity single-crystal calcium fluoride substrates, 260 precision-processing machines, and 65 specialist inspection instruments for full in-house development and production. plano-convex, biconvex, plano-concave, meniscus, collimating, and focusing lenses span 1–500mm, with surface accuracy up toλ/10. It supplies precision optics for UV systems, IR detection, laser equipment, spectroscopy, medical diagnosis, and research.

Specifications

ParameterValue
Material [Standard Specifications]High-Purity Calcium Fluoride Single Crystal (CaF₂)
Diameter Range [Standard Specifications]1–500mm
Diameter Tolerance [Standard Specifications]＋0/-0.01mm
Center Thickness Tolerance [Standard Specifications]±0.02mm
Surface Figure Accuracy [Standard Specifications;@632.8nm]λ/4、λ/8
Surface Quality [Standard Specifications]60/40
Decentration [Standard Specifications]±1′
Chamfer [Standard Specifications]0.2–0.5mm×45°
Applicable Wavelength Band [Standard Specifications]200nm–7000nm
Material [High-Precision Grade Specifications]High-Purity Calcium Fluoride Single Crystal (CaF₂)
Diameter Range [High-Precision Grade Specifications]1–300mm
Diameter Tolerance [High-Precision Grade Specifications]＋0/-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]40/20
Decentration [High-Precision Grade Specifications]±0.5′
Chamfer [High-Precision Grade Specifications]0.2–0.5mm×45°
Applicable Wavelength Band [High-Precision Grade Specifications]200nm–7000nm

Applications

UV optics: deep-UV lithography, UV laser processing, sterilization and detection equipment. Infrared optics: mid-IR imaging, infrared temperature measurement and sensing, and thermal-camera lenses. Laser equipment: excimer, solid-state and infrared laser focusing/collimation systems. Spectral instruments: UV-IR spectrometers, Fourier infrared systems and medical diagnostic spectrometers. Medical optics: UV diagnosis, infrared noninvasive testing and precision medical optical imaging. Research and precision detection: university laboratories, astronomical optics, metrology and high-precision optical collimation systems.

Key Features

Ultrabroad transmission: stable, excellent UV-to-mid-IR transmission over 200nm–7000nm (0.2–7μm). Ultralow dispersion: Abbe number up to 97.29 for excellent chromatic correction in precision imaging. Strong physicochemical stability: high-temperature resistance (softening temperature 800℃), acid/alkali corrosion resistance, low tendency to deliquesce and strong environmental adaptability. Ultraprecision fabrication: surface figure to λ/10, surface quality to 40/20 and dimensional tolerance ±0.01mm. Full structural coverage: custom plano-convex, biconvex, plano-concave, biconcave, meniscus, collimating and focusing designs. Broad application compatibility: UV lasers, infrared imaging, medical testing and research spectroscopy. IV. Core material advantages. Spectral coverage: high broadband transmission over 200nm (deep UV)–7000nm (mid-IR). Optical properties: refractive index n_d=1.413, Abbe number 97.29, ultralow dispersion and precision imaging without significant chromatic aberration. Thermal properties: expansion coefficient 3.18, softening temperature 800℃, excellent heat resistance and thermal stability. Mechanical properties: Knoop hardness 158.3 and moderate strength facilitate ultraprecision polishing. Chemical properties: resistant to acids, alkalis and humidity; low reactivity with air and water vapor ensures stable long-term performance. V. Available structures: plano-convex, biconvex, plano-concave, biconcave, meniscus, collimating and focusing lenses. VI. Standard coatings. UV AR: 200–400nm deep-UV antireflection reduces UV reflection losses. Near-IR AR: 0.75–1.55μm and 1.65–3μm. Mid-IR AR: 3–5μm. High-laser-damage-threshold coatings improve UV/IR laser tolerance. VIII. Yasi Optical advantages. Fully controlled in-house closed-loop cutting → milling/grinding → polishing → coating → inspection → assembly, with full traceability. Precision equipment: ZYGO interferometers, Nikon precision goniometers and optical dimensional measuring instruments for comprehensive quality control. Extensive one-stop customization of dimensions, focal length, structure, coatings and mounting references. Stable, rapid small- and large-batch delivery for equipment production and research prototypes. Industrial/medical standards: high-reliability optical-component standards support medical optical-equipment compliance. IX. Quality assurance. All calcium fluoride lenses undergo ZYGO interferometric figure, optical dimensional and spectral transmission inspections to ensure 100% parameter 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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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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