激光等级透镜

1.什么是激光窗片

激光防护窗，也称为激光防护玻璃、防护滤光片或焊接防护窗，主要应用于保护高成本的激光光学元件，以节省资金。

2.激光窗的主要用途是什么？

这些窗口片通常用于激光切割、激光焊接等设备上，用以避免高精度的激光光学器件因加工时材料飞溅而造成的损坏。

3.优恩立激光窗口片的主要优势

高传输率

高损伤阈值

低散射

低吸收

优良的膜层密度

良好的环境稳定性

常规规格：

尺寸：4-80毫米，圆形或方形

材质：BK7、熔融石英、ZnSe等

表面质量：10/5

面型：lambda/10@632.8nm

平行度：30''

粗糙度：3A

色散棱镜用于需要将入射光分离成其组成波长的应用中。例如，当白光进入色散棱镜时，它被分成三个部分:红、绿和蓝。色散棱镜是理想的光谱学或激光调谐。

1.  Germanium (Ge)

Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 μm wavelength band. Its high refractive index makes Ge ideal for low power imaging systems because of minimum surface curvature. Chromatic aberration is small, often eliminating the need for correction.

2. Silicon (Si) 

Silicon (Si) is grown by Czochralski pulling techniques (CZ) and contains some oxygen that causes an absorption band at 9 microns.To avoid this, material can be prepared by a Float-Zone (FZ) process. Optical silicon is generally lightly doped (5 to 40 ohm cm) for best transmission above 10 microns, and doping is usually boron (P-type) and phosphorus (N-type). After doping silicon has a further pass band: 30 to 100 microns which is effective only in very high resistivity uncompensated material.
 
CZ Silicon is commonly used as substrate material for infrared reflectors and windows in the 1.5-8 micron region. The strong absorption band at 9 microns makes it unsuitable for CO2 laser transmission applications, but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Application as window, lens in the 1.5 - 8 um region; Mirror for CO2 laser and spectrometer applications.
 

ZnS MultiSpectral Under intense heat and pressure, defects within the crystalline lattice are virtually eliminated, leaving a water-clear material with minimal scatter and high transmission characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance common aperture systems that must perform across a broad wavelength spectrum.

Specifications:

Material: ZnS MultiSpectral
Diameter Tolerance: --------------------- +0.0, -0.1mm
Thickness Tolerance: -------------------- ±0.1mm
Clear Aperture: ---------------------------->85%
Parallelism: -----------------------------------3 arc minute
Surface Quality: ----------------------------80-50 scratch and dig
Wavefront Distortion: -------------------- λ /2 per 25mm @633mm
Bevel: -----------------------------------------Protective  (<0.2mm x 45° )
Coating: -------------------------------------- Optional （Uncoated, AR Coating, etc.）

4. ZnSe material

ZnSe is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared wavelengths and its visible transmission. For high-power applications, it’s critical that the material bulk absorption and internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry. Our quality assurance department provides testing and specific optics certification on request.

ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It’s safe to use in most industrial field, and laboratory environments.

锥形透镜是圆柱形棒透镜，其一端加工成锥形表面。 通常研磨杆的圆周，而抛光锥形表面。

消色差透镜用来减小或消除色差。消色差透镜设计亦有助于减少球面像差。消色差透镜是一系列应用的理想选择，包括荧光显微镜、图像中继、检测或光谱学。消色差透镜通常是将两个元件胶合在一起或将两个元件安装在一个机械件中，它所产生的光斑尺寸比类似的单透镜要小。

UNI Optics供应材料包括中性密度，短程，长通，带通，紫外线，红外线，吸热和色温转换滤光片。