Tungsten Heater in Optical Coating
Tungsten heater in optical coating refers to a key evaporation source heating element used in vacuum deposition processes for optical thin-film fabrication. It is fabricated from high-purity tungsten wire through bending, twisting, or forming into specific structures. It mainly uses resistive heating to vaporize coating materials, which then deposit onto optical substrates such as lenses to form anti-reflection coatings, reflective coatings, or optical filter coatings.
Features of CTIA’s Tungsten Heater in Optical Coating
(1) High melting point, maintaining structural stability under high-temperature evaporation without deformation or failure.
(2) Stable and controllable electrical resistivity, suitable for resistive heating and evaporation rate control.
(3) Good high-temperature strength retention with creep resistance, suitable for long-duration operation.
(4) Low vapor pressure, reducing contamination sources in vacuum environments and improving film purity.
(5) Compatible with multiple evaporation structures such as straight, bent, spiral, and customized configurations.
(6) Surface can be treated by chemical cleaning or electrolytic polishing to reduce surface contamination and outgassing, improving vacuum stability.
(7) Suitable for continuous or batch optical thin-film deposition processes.
Applications of CTIA’s Tungsten Heater
(1) Anti-reflection coating (AR Coating) deposition to improve transmittance and reduce reflection loss.
(2) Optical filter coating fabrication for selective wavelength transmission or blocking.
(3) High-reflection and protective coatings for optical mirrors and precision reflective systems.
(4) Optical lens and imaging system coating to improve imaging quality and environmental stability.
(5) Functional thin-film deposition for precision optical components such as laser optics and sensor windows.
(6) Metal and alloy evaporation source systems in vacuum coating equipment.
(7) Optical thin-film research and development based on Physical Vapor Deposition (PVD) processes.
Product Parameters of CTIA’s Tungsten Heater
Product name: Tungsten heater
Product model: Customizable, including straight, bent, spiral, U-frame, and other structural types
Material: Tungsten wire
Size: Customizable
Color: Silver-white
Purity: ≥99.95%
Melting point: 3420°C ±20°C
Surface condition: Chemical cleaning or electrolytic polishing
CTIA GROUP has over 30 years of experience in tungsten heater manufacturing and precision customization. Based on application requirements, vacuum level, film uniformity requirements, and installation space, CTIA systematically optimizes key parameters including wire diameter, doping type and content, structure type, overall length, effective heating length, bending angle, and support positions. Surface treatments such as electrolytic polishing and alkaline cleaning are also applied, enabling full-process customization from material selection, structural design to manufacturing.
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
WeChat:
More info>>
1.Tungsten heater quotation table
2. Catalog of tungsten heater
3. Tungsten heater models
4. Stranded tungsten wire for making tungsten heater