Chalcogenide Glass Optical Prism

Chalcogenide glass (IRG26) is a cost-effective specialty optical material designed for mid- and far-infrared optical systems. Its extremely broad infrared transmission band of 1000–14000nm (1–14μm), high refractive index, and excellent processability make it ideal for prisms in infrared thermal imaging, security night vision, automotive infrared detection, and industrial temperature measurement. Scysgx uses more than 260 precision processing machines and 65 specialized inspection instruments to provide a complete closed-loop production line covering cutting, grinding, polishing, coating, and quality inspection. Chalcogenide-glass optical prisms are available as right-angle, Dove, pentagonal, roof, beamsplitting, and custom prisms, with side dimensions of 1–1000mm and hypotenuse dimensions of 1–600mm. Commercial-grade and high-precision options offer flatness up to λ/10. Antireflection coatings for infrared bands such as 3–5μm and 8–12μm are available, providing cost-effective, highly stable prism solutions for mid- and far-infrared optical systems. Some standard specifications are stocked long term for rapid delivery.

Infrared thermal imaging: optical-path prisms for security thermal cameras, vehicle night vision, civilian infrared detection and outdoor night vision. Industrial thermometry: prisms for infrared thermometers and noncontact temperature detection across mid-/far-IR bands. Vehicle/security optics: optical-path prisms for infrared-assisted driving and surveillance night-vision lenses in civilian applications. Research/industrial optics: prisms for university-laboratory infrared spectrometers and industrial infrared inspection. Civilian infrared equipment: prisms for consumer thermal cameras and portable detectors, suited to batch production.

Broadband high mid-/far-IR transmission: stable, excellent infrared transmission over 1000–14000nm (1–14μm), suiting most mid-/far-IR systems. High index simplifies optics: refractive index 2.7909 reduces optical-component counts, system complexity and cost. Cost-effective, easy fabrication: precision polishing and batch processing provide economical prism solutions for civilian infrared equipment. Ultraprecision planar fabrication: high-precision flatness to λ/10, angular tolerance down to 2″–30″ and surface quality to 10-5, without scratches or defects, ensure stable optical transmission. Full structure/specification customization: right-angle, Dove, pentagonal, roof, beamsplitter and irregular structures, with side dimensions 1–1000mm and hypotenuse dimensions 1–600mm, meet diverse optical-path designs. Infrared coating compatibility: 3–5μm, 8–12μm and other infrared AR coatings greatly improve transmission and reduce reflection losses. Two grades: commercial for general industrial/civilian infrared equipment and high precision for research and industrial thermometry, balancing performance and cost. IV. Core material advantages. Spectral coverage: high broadband transmission over 1000nm (near-IR)–14000nm (far-IR), a preferred mid-/far-IR material without significant absorption or scattering. Optical properties: refractive index n_d=2.7909 simplifies infrared-system design for imaging and detection. Physical properties: density 4.63g/cm³, Knoop hardness 68, moderate strength, easy ultraprecision polishing and irregular fabrication for diverse prism designs. Thermal properties: expansion coefficient 21.4×10⁻⁶/℃, softening temperature 185℃, stable optical performance for ambient- to medium-temperature industrial use. Application advantages: cost effectiveness and easy batch fabrication make it ideal for civilian infrared equipment, security night vision and vehicle infrared-system prisms. V. Structures and customization. 1. Standard prisms: right-angle, Dove, pentagonal, roof, beamsplitter, polarizing, rhomboid and corner-cube prisms. 2. Customization: side/hypotenuse dimensions and optimized tolerance grades fit optical-system space; special-angle and irregular prisms can have arbitrary angles to suit optical-path designs; chamfering, edge grinding, ultraclean polishing and custom cleaning meet cleanroom/special-environment requirements; band- and function-specific 3–5μm and 8–12μm infrared AR coatings improve optical performance. VI. Standard coatings. Mid-IR AR: dedicated 3–5μm and 8–12μm antireflection greatly improves mid-/far-IR transmission and reduces reflection loss. DLC: improves surface hardness, contamination/scratch resistance and prism life outdoors and in industry. High-laser-damage-threshold coatings improve strong-laser tolerance and protect core optics in mid-IR systems. VIII. Yasi Optical advantages. Fully controlled in-house closed-loop blank cutting, milling/grinding, polishing, angle machining, coating, inspection, cleaning and packaging, without outsourcing and with full traceability. Precision equipment: ZYGO interferometers, precision goniometers, optical dimensional measuring instruments and surface-quality testers control all parameters and ensure flatness, angular tolerance and transmission compliance. Large/irregular fabrication: batch production of 1–1000mm large-aperture prisms and custom irregular/special-angle prisms meet high-end optical-path design needs. One-stop customization: structure, dimensions, angles, tolerances and coatings, with optical-path adaptation support and dedicated nonstandard solutions. Two-grade delivery: commercial/high-precision grades and stable small/large batches for general industrial and civilian infrared equipment. Stock/delivery: some standard products remain stocked for rapid delivery; controlled custom-order lead times meet schedules. IX. Quality assurance. All chalcogenide glass prisms undergo ZYGO interferometric flatness, precision-goniometer angle, optical dimensional, infrared transmission and surface-quality inspections to ensure 100% compliance. Automated ultrasonic ultraclean washing and vacuum moisture-proof packaging ensure transport and long-term stability for cleanrooms and harsh environments.