광학

황화아연 (ZnS)

황화아연 (ZnS)

Choose ZnS for domes, windows, lenses and other transmissive optics whenever mechanical strength, hardness, or operation in harsh environments is required.

ZnS is most highly transmissive in the 8 µm to 12 µm spectral range. Its high resistance to rain erosion, high-speed dust, and particulate abrasion, makes it especially suitable for exterior IR windows on aircraft frames.

Zinc Sulfide (ZnS) Characteristics

Coherent routinely supplies ZnS substrates up to 300 mm, and can provide sheet material, core-drilled blanks, edged blanks, generated curved lens blanks, and more.

데이터시트
ZnS Material Properties (at 20°C)

Physical Properties

Structure

Cubic zincblende

Density

4.08 g/cm³

Grain Size

2 µm to 8 μm

Inclusions

None > 0.5 mm

Electrical Density

> 1012 ohm-cm

Optical Properties

Bulk Absorption Coefficient @ 10.6 μm

< 0.24 cm-1

Thermo-Optic Coefficient (dn/dT) @ 10.6 μm

4.1 × 10⁻⁵/°C

Refractive Index Inhomogeneity @ 0.6328 μm

< 100 x 10-6

Thermal Properties

Thermal Conductivity @ 20° C

0.167 W/cm/°C

Specific Heat

0.469 J/g/°C

Linear Expansion Coefficient @ 20° C

6.8 × 10⁻⁶/°C

Mechanical Properties

Young’s Modulus

74.5 GPa (10.8 x 106 psi)

Rupture Modulus

103.4 MPa (15,000 psi)

Knoop Hardness

210-240 kg/mm²

Density

4.08 g/cm³

Poisson’s Ratio

0.27

Fracture Toughness

0.8 x 106 N/m1.5

관련 제품

광학 제조 역량

Coherent 소재 성장, 가공, 코팅, 조립에 이르는 수직 통합 역량과 철저한 품질 보증(QA) 프로세스에 대해 알아보십시오. 이러한 역량이 어떻게 당사 광학 부품의 성능과 신뢰성을 보장하고, 공급망의 위험과 불확실성을 최소화하는지 확인해 보십시오.

자세히 알아보기