High Performance Polished Synthetic Sapphire Crystal For Watch Parts

General Specifications

Diameter: 0.2-300mm
Diameter tolerance :+/-0.1mm or +/-0.02mm
Thickness : 0.10-100mm
Thickness tolerance :± 0.1mm or +/-0.02mm
Surface quality (scratch & dig):60/40, 40/20 or better
Surface accuracy :λ/10, λ/2, λ
Clear Aperture : >85%, >90%
Parallelism: +/-3' ,+/-30''
Bevel: 0.1~0.3mm×45 degree
coating : AR, BBAR or upon customer request( UV, VIS, IR)

Advancement On sapphire Crystal compare with other glass

1) High temperature resistant, Sapphire Round / Rectangular Optical Window can work under 1200°C continuously, and in short time can even work under 1450°C, its softening temperature is 1650°C, and the melting temperature is 1750-1800°C.
2) Corrosion-resistant, Except hydrofluoric acid, Quartz Plate Of Optical Grade do not react with any acid and base except hydrofluoric acid. the stability is 30 times of the ceramic, and 150 times of stainless steel.
3) Excellent thermal shock stability
4) High transmission to 85%
5) Electric insulation, it is 10000 times of usual glass

Feature of our Optical synthetic Sapphire crystal

OEM Size and Design, any shape is ok
Widely used for optical window, lens, military, etc; The material is synthetic sapphire(hardness 9H)
High Crystal Purity:> 99.995%;

Crystal orientation: Provide A plane, R plane, C plane, M plane and other random planes for sapphire crystal product.

Directional accuracy: ±0.05°We can always provide high-quality service, we will respond to the customer's requirements in a short time.
In addition to optical sapphire glass, we can also make other materials of the optical window, sapphire wafer.

Regional smelting method—Synthesis principle

The crystalline material is first sintered or pressed into a rod shape, and it is rotated and lowered to the heater, the rod material is melted, and the melting zone is in a floating state, thereby obtaining a purified or recrystallized single crystal.
Features: The crystals produced by the regional smelting method have very high clarity, and it is difficult to see obvious identification features. This method is very costly and is mainly used to produce materials for scientific and technological purposes.

Chongqing Silian Optoelectronics Science & Technology Co., Ltd was founded by China Silian Instrument Group Co., Ltd for the development of LED industry. After the acquisition of Honeywell Sapphire business, the company has become China’s first enterprise with the world’s top-quality large-sized sapphire production and R&D capabilities. The company has the world’s leading high-power sapphire substrates technology. Taking the excellent oppotunity, the company has developed LED packaging, LED lighting applications and other industries in succession to project extension in LED industrial chain. Based on the core-technology of sapphire substrates, we have created an area of 1000 mu (approximately 66.7 hectares) to develop LED industrial china from basic materials to high end products and become the most completed and largest semiconductor energy-efficient in dustrial base in Western China.

Maintaining the enterprise spirit of “People oriented, Natural Selection, Inheriting innovation and Pursuit of Excellence” and the customer tenet of “Silian is guided through customers and stands with customers”, we are committed to provide customers with high-quality sapphire chip substrates, optical window materials, LED packaging devices, and high efficiency LED lighting desplay high end products and creating value for customers.

Silian the international large-sized sapphire substrates standards lauching member.

Acquiring the completed production line from sapphire crystal growth to substrate processing.

We have the qulity advantages of high purity, high consistency and high repeatability.

Cooperating with world top level LED chip manufactures.