In the current era of rapid technological development, laser projectors have gradually become a "hot commodity" in fields such as home theaters, business offices, education and training, engineering, cinemas, etc., thanks to their high-definition image quality, wide color gamut, and flexible usage scenarios.

*The picture is a laser projector, sourced from the material


In the core components of laser projectors, the protective glass of the laser light source module (laser head, in daily life, "laser light source module" is commonly referred to as the "laser head", but the former is a more accurate and complete professional term) can be called the "invisible guardian", which directly affects the service life and imaging quality of the laser projection equipment. Among numerous protective glass materials, sapphire glass stands out with its outstanding performance and has become a reliable choice for protective glass in laser projector light source modules (laser heads).

*The picture is a laser projector, sourced from the material

*The picture shows the sapphire protective glass in the laser equipment, and the image material is from the internet

Overall,

Sapphire glass material mainly has the following characteristics:

Sapphire glass exhibits excellent optical stability in high-temperature environments

*The picture shows the protective glass of the laser light source module (laser head) customized by Xinyuan Optics for customers

It is understood that when the temperature rises above 1000 ℃, most optical materials will experience problems such as transmittance attenuation and refractive index drift. The transparency of sapphire in the visible to mid infrared wavelength range (0.15-5.5 μ m) is almost unaffected by temperature. At 1500 ℃, the transmittance of sapphire lens in 400-700nm band only decreases by 2.3%, which is far better than the 15% attenuation rate of fused silica. When a 4K laser projector continues to operate, the optical module (laser head) will generate heat, causing other components to be exposed to high temperatures. If the protective glass of the optical module (laser head) cannot withstand high temperatures and causes optical performance degradation, it will greatly affect the imaging quality of the laser equipment.

Sapphire glass, with its ultra-high melting point (about 2040 ℃), excellent thermal conductivity, optical stability, and high transmittance (sapphire material itself has a transmittance of about 84%, which can reach over 90% after coating), has become a reliable protective glass for laser projection equipment.

Superb wear resistance and scratch resistance

Sapphire glass has a Mohs hardness of up to 9, second only to diamond, and has super strong wear resistance and scratch resistance. It can effectively resist various frictions and collisions in daily use, ensuring that the projector presents clear and bright images.

Xinyuan Optics: 31 years of focus on customized processing of sapphire glass

Xinyuan Optical Industry (Shenzhen) Co., Ltd. is a manufacturer and processor of sapphire products. It is the drafting unit of the Chinese industry standard for synthetic sapphire glass and has 31 years of experience in sapphire research and development, production, and manufacturing. With complete equipment, it is one of the few companies on the market that has a complete process from raw material production (sapphire crystal growth) to post-processing (screen printing, electroplating, coating).

The company obtained ISO9001 quality management system certification in 2008, as well as REACH and RoHS certifications, giving it a strong market advantage. At present, Xinyuan Optics has customized sapphire protective glass for laser projector light source modules (laser heads) for many customers. Customers and partners with related needs are welcome to contact us for consultation~