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Clear polished optical perform quartz glass plate
ZCQ provides different materials and different degree of precision quartz and optical glass window. The precision is varies from the ordinary Thermal-Resistant Observation Window to High Precision Optical Plane Mirror.
Parameter | Standard Grade | Precision Grade | Ultra-precision Grade |
Dimensional Tolerance | +/-0.1 | +/-0.1 | +/-0.1 |
Clear Aperture | >80% to >90% | >80% to >90% | >80% to >90% |
Surface Quality | 80-50 | 60-40 | 40-20 |
Parallelism | 3 arc min | 1 arc min | 30 arc seconds |
Wavefront Distortion | 5λper 25mm | 1λper 25mm | λ/4 |
Protective Bevel | <0.25x45 deg | <0.25x45 deg | <0.25x45 deg |
Coating | Optional | Optional | Optional |
Dimension | Depends on material | ||
Thickness | Depends on material |
Characteristics and superiority
Optical Property:
Based on differences of Optical Performances and Purity, ZCQ usually Supply three basic Quartz Materials: Fused Quartz, Synthetic Fused Silica (UV) and Infrared Optical Quartz.
Chemical Property:
NAME | UNIT ×10-4% | |||||||||||||||
Al | Fe | Ca | Mg | Yi | Cu | Mn | Ni | pb | Sn | Cr | B | K | Na | Li | OH | |
Fused Quartz | 16 | 0.92 | 1.5 | 0.4 | 1.0 | 0.01 | 0.05 | <0.3 | <0.3 | <0.3 | <0.3 | 0.2 | 1.49 | 1.67 | <0.3 | 400 |
Synthetic Fused Silica | 0.37 | 0.31 | 0.27 | 0.04 | 0.03 | 0.03 | 0.01 | <0.03 | <0.03 | <0.03 | <0.03 | 0.02 | 0.5 | 0.5 | <0.3 | 1200 |
Infrared Optical Quartz | 35 | 1.45 | 2.68 | 1.32 | 1.06 | 0.22 | 0.07 | <0.03 | <0.03 | <0.03 | <0.03 | 0.3 | 2.2 | 3 | <0.3 | 5 |
Mechanical Property:
Mechanical Property | Reference Value | Mechanical Property | Reference Value |
Density | 2.203g/cm3 | Refractive Index | 1.45845 |
Compressive Strength | >1100Mpa | Coefficient of thermal expansion | 5.5×10-7cm/cm.°C |
Bending Strength | 67Mpa | Hot work temperature | 1750~2050°C |
Tensile Strength | 48.3Mpa | The temperature for a short time | 1300°C |
Poisson's Ratio | 0.14~0.17 | The temperature for a long time | 1100°C |
Elastic Modulus | 71700Mpa | Resistivity | 7×107Ω.cm |
Shearing Modulus | 31000Mpa | Dielectric Strength | 250~400Kv/cm |
Moths Hardness | 5.3~6.5 (Moths Scale) | Dielectric Constant | 3.7~3.9 |
Deformation Point | 1280°C | Dielectric absorption coefficient | 4×104 |
Specific Heat(20~350°C) | 670J/kg °C | Dielectric loss coefficient | 1×104 |
Thermal Conductivity(20°C) | 1.4W/m °C | Typical Mechanical Property of Fused Quartz |
Q: Why choose us?
A: BEIJING ZHONG CHENG QUARTZ GLASS CO., LTD (short for ZCQ) was founded
in 1998, and our emphasis on optical fused quartz products and optical glass have
resulted in our excellent reputation in the field. Our headquarters is located in BJ. As an international supplier of quartz, fused silica and optical glass products, we have been
authenticated by GB/T19001-2008 QMS & RoHS. Our products are widely used in the
Semiconductor, Telecommunications, Solar Energy, Electron, Optics, Optical Fiber,
Chemical Industry, Coating, Medical Treatment, Aerospace, Military Affairs and other
high-tech industries.
Q: Where are our business partners located ?
A: Our products are exported to America, Germany, France, Britain, Australia, Korea,
Japan, and other counties, totally more than 50 countries. Please do not hesitate to
contact us.