Name: Сапфировая линза
Rating: 4.5 (100 reviews)

Основные характеристики

Extreme Mechanical Strength

It is one of the hardest materials after diamond, possessing extremely high compressive strength, scratch resistance, and the ability to withstand harsh environments such as high pressure and high-speed impacts.
Excellent Physicochemical Stability

Chemically extremely stable, resistant to strong acids, and does not absorb hydroxyl groups (OH groups) near 1.4μm, 2.2μm, and 2.7μm, making it suitable for chemical analysis instruments. Its melting point is as high as 2053°C, allowing it to withstand extremely high temperatures.
Excellent Thermal Management

With a higher thermal conductivity than fused silica, it dissipates heat more quickly in high-power laser applications, effectively reducing focus drift caused by thermal effects.
$Wide Transmission Range and High Refractive Index$
Wide Transmission Range and High Refractive Index

Its transmission band covers ultraviolet, visible, and mid-infrared light (approximately 0.15μm - 5.5μm). Its high refractive index (approximately 1.77) allows for thinner and lighter lenses with the same focal length.

Спецификация Сапфировая линза

Кристаллографический	Сингония	Четырехугольник
	Класс симметрии	3м
	Постоянные решетки	a = 4,758 Å c = 12,991 Å
	Расщепляемость	(1011), (1120) несовершенный
Оптический	Показатель преломления при нэ	1.7771
	Показатель преломления при nF' - nC'	0,0107
	Коэффициент теплопередачи показателя преломления при 3,39 микронах в диапазоне ±60 °C	βо = (0,88...1,28) х 10-5 βэ = (0,99...1,39) х 10-5
	Спектральный диапазон, микроны	0,17 - 5,0
Тепловой	Коэффициент линейного теплового расширения, °C⁻¹ при ±60 °C
	⊥ к оси c	(3,24 ... 5,66) x 10⁻⁶
	Теплопроводность, Вт/(м * °C) при 46 °C
	⊥ к оси c	25.2
	\|\| к оси С	23.1
	Удельная теплоемкость, Дж/(кг * °C)	0,7610 x 10³
	Термостойкость, °C	162 ±8
	Температура плавления, °C	2030
Химический	Молекулярная масса	101.96
Химический	Растворимость в воде, грамм/100 см³	98 x 1010

Типичные области применения

High-power laser processing

Cutting and welding systems using 1μm fiber lasers, leveraging their low thermal drift and high damage threshold to improve processing quality and stability.
Extreme environment detection

Windows or lenses in aerospace, deep-sea exploration, and oil drilling equipment need to withstand high pressure, high temperature, vibration, and corrosion.
Spectroscopic and chemical analysis

Near-infrared analytical instruments, due to their non-absorption of hydroxyl groups, can accurately measure spectra in relevant wavelength bands.
Medical and semiconductor

Medical endoscopes and semiconductor ultraviolet lithography equipment require materials that are non-toxic and can withstand harsh processes.