K9 glass is a glass product made from K9 material, used in optical coating and other fields. K9 material belongs to optical glass. Because of its crystal clarity, many factories that process K9 material have emerged, and the products they process are called crystal glass products in the market. The composition of K9: SiO2=69.13% B2O3=10.75% BaO=3.07% Na2O=10.40% K2O=6.29% As2O3=0.36% Its optical constants are: refractive index=1.51630 dispersion=0.00806 Abbe number=64.06 The national standard for optical glass classifies glass by Abbe number: glass with Abbe number ≥50 is defined as crown glass, represented by "K", and glass with Abbe number <50 is defined as flint glass, represented by "F". Under these two major categories, further subdivisions use "Q" for light; "Z" for dense; "T" for special, with chemical element symbols as prefixes and numbers as suffixes, totaling 18 categories and 141 grades. For example: QF8 (light flint), BaK11 (barium crown), K9 (crown). Generally speaking, crown glass belongs to the alkali silicate system, and most flint glass belongs to the lead silicate system.
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Shanghai Lianken Optoelectronics Technology Co., Ltd. is committed to tracking world-class advanced technology and focusing on continuously providing internationally leading products and solutions. It provides value-added products and services to customers in fields such as high-end special optical materials, optoelectronic components and subsystems, optoelectronic solutions, optical manufacturing equipment, and optoelectronic sensing engineering solutions. Products are widely used in high-end optical manufacturing, astronomical optics, space optics, high-energy lasers, optoelectronic guidance, semiconductor optics, and other fields.
Full-spectrum reflective optical materials: including glass-ceramics, zero-expansion quartz ULE, SiC, Sitall CO-115M, beryllium, high-purity aluminum, carbon fiber, etc.; as well as lightweight finished products of related materials and subsequent related optical processing;
Full-spectrum transmissive optical materials: including single-crystal CaF2 (calcium fluoride) covering ultraviolet, far-ultraviolet fused quartz, ultraviolet quartz, infrared quartz, sapphire, infrared chalcogenide glass, germanium Ge, Si, ZnSe, ZnS and other high-end materials, and specializes in supplying products with large sizes and high performance;
Core materials and devices for high-precision laser gyroscopes and fiber optic gyroscopes, including various specifications of polarization-maintaining fibers;
Polarization materials: ultra-high extinction ratio polarizers, absorptive polarizers, optical rotation crystals, various polarization-maintaining fibers and devices. Special optical fibers: various specifications of polarization-maintaining fibers, ultraviolet fibers, energy-transmitting fibers, crystal fibers, and custom special optical fibers. High-end optical processing and testing equipment and solutions;
High-end consumables in the optical field: providing all targets and evaporation materials and ion sources required by Veeco and Lelybold coating machines, such as HfO2 targets, LaB6 cathodes. Can provide nearly 2000 kinds of various evaporation and sputtering coating materials; component bonding films for coating machines, high-quality diamond powder and diamond polishing liquid and paste for high-end optical processing, low-temperature wax, Rhodia CeroX polishing powder, etc.;
Optoelectronic sensing: fiber Bragg grating sensing systems and engineering solutions;
We can also provide product solutions composed of the above materials, including high-energy laser applications, space applications, defense applications, and other fields;
High-end optical processing and testing equipment solutions.