CTIA's Tungsten Heater in Precision Optical Coating
CTIA's tungsten heater is a resistive heating element used in Optical coating equipment to provide a stable and uniform thermal field for evaporation sources or substrate areas, enabling precise film deposition and thickness control. Manufactured from high-purity or doped tungsten wire through structural forming and surface treatment processes, the tungsten heater is essential for preparing anti-reflective films, filter films, reflective coatings, and multilayer functional optical thin films.
Temperature stability and uniformity of the heating system directly impact the optical performance and consistency of layers during precision optical coating. Tungsten heater has a melting point of 3410°C, allowing it to maintain structural stability and resist deformation in high-temperature evaporation environments. Its low vapor pressure results in minimal volatilization under high vacuum, which helps maintain the cleanliness of the coating layers. Its stable resistive performance ensures a continuous conversion of electrical energy into thermal energy, creating a uniform thermal field via radiation. Meanwhile, a low coefficient of thermal expansion limits deformation during repeated heating and cooling cycles, improving the stability and repeatability of the coating process. Thus, the tungsten heater meets the requirements of precision optical coating for heating elements.
Specifications of CTIA's tungsten heater in precision optical coating:
Material: Pure tungsten wire with a purity of 99.95% or higher, or doped tungsten wire.
Wire diameter: 0.2mm-1.2mm, customizable.
Strands: Single strand or multi-strand.
Structure: Coil, spiral, basket, and customized structures.
Surface condition: Electrolytic polishing or alkaline cleaning.
Applications of CTIA's tungsten heater in precision optical coating:
(1) Anti-reflective (AR) coating preparation: Deposition of low-reflection layers for lenses, camera objectives, and display optical components.
(2) Filter and reflective film fabrication: Precise thermal evaporation control for multilayer interference film structures to enhance band selectivity.
(3) Precision optical device coating: Thin film deposition for high-precision lenses, prisms, and laser optical assemblies.
(4) Functional optical coating formation: Production of wear-resistant, anti-reflective, and environmentally adaptive optical thin films.
Drawing on more than 30 years of expertise in tungsten heater manufacturing, CTIA GROUP provides systematic optimization of wire diameters, structural configurations, effective heating lengths, and connection methods based on specific equipment structures, evaporation source layouts, and thermal field requirements. Combined with advanced surface treatments, full-process customized services are delivered from material selection to final fabrication.
For any inquiry, please contact tungsten heater manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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