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Email : sales@uni-optics.com
A band pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range, and it’s used to selectively transmit a portion of the spectrum while rejecting all other wavelengths.
product origin:
Chinashipping port:
Fuzhou Chinalead time:
4 working weekspayment:
T/T Payment, Western Union1、What is IPL filters?
IPL Filter is the key optical element for IPL (intense Pulsed Light) machine , which blocks the UV wave and transmits the useful waves from 400nm to 1200nm for laser equipment.
2、What are the applications of IPL Filters?
IPL Filters are an ideal for a variety of applications, such as IPL machine, IPL equipment, photo rejuvenation, hair removal, vascular and acne treatment, and skin rejuvenation.
3、Which wavelength UNI Optics can offer?
UNI Optics can offer the IPL Filter with different wavelength, including 495, 515, 550, 560, 570, 590, 615, 645, 695, 755, 780 nm and 1200nm. Others are available upon request.
Common Capability:
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Substrate |
N-BK7, B270, Fused Silica or other |
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Dimension Tolerance |
±0.1(General Precision), ±0.01(High Precision) |
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Thickness Tolerance |
±0.2(General Precision), 0.005(High Precision) |
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Surface Quality |
60/40(General Precision), 20/10(High Precision) |
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Clear Aperture |
＞80%(General Precision), 95%(High Precision) |
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Parallelism |
＜3 arc min (General Precision), ＜5 arc sec (High Precision) |
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Flatness |
＜λ/2@633nm(General Precision), ＜λ/10@633nm (High Precision) |
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Work Wavelength Range |
300~1200nm |
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T% avg. In Pass Band |
＞90% |
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T% avg. In Rejection Band |
≤0.5% |
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Incidence Angle |
0° |
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Bevel |
0.2~0.4mm×45° |
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Available Wavelength |
515~1200,530~1200,550~1200,560~1200, 570~1200,590~1200615~1200, 645~1200695~1200,755~1200,780~1200nm |
Typical WavelengthTransmittance Data
Machine Vision Bandpass Filters
A band pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range, and it’s used to selectively transmit a portion of the spectrum while rejecting all other wavelengths.
Longpass Filters for Vision inspection Apllication
Longpass filters are ideal for a variety of applications, such as gas monitoring, temperature, sensing, thermal imaging and motion sensing, etc. Longpass filters block shorter wavelengths and transmit longer wavelengths. Blocking can be from reflectance, absorption or a combination. Transmission in the pass band can be enhanced with an antireflection coating on the second surface.
Optical glass neutral density filters
A Neutral Density filter allows a photographer to control the exposure in an image very easily. The filter stops light reaching the camera sensor, therefore allowing us to leave the camera with a higher aperture for a longer amount of time.
High Precision Colored Glass Filters
High Precision Colored Glass Filters
High Power Laser Line Windows
1、What are laser windows?
Laser Protect Windows(Laser protective glass, protective filters or welding protective windows) are used to save for the high cost of laser optics.
2、What are laser windows used for?
These windows are normally used in applications like laser cutting, laser welding machine, they are used for avoiding the high-precision laser optics damage by material splashes.
3、The key features of UNI Optics' Laser Windows
High Transmission
High Damage Threshold
Low Scatter
Low Absorption
Excellent Film Density
Excellent Environmental Stability
Typical Specifications:
Dimension: 4mm-80mm, round or square
Material: BK7, Fused Silica, ZnSe...etc
Surface quality: 10/5
Surface flatness: Lambda/10@632.8nm
Parallelism: 30’’
Roughness: 3A
UN-TFA1620L-12MP
Laser Grade Line Mirrors
UN-TFA1628C-10MP
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Taurus Series Compact FA Lens(10MP) |
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Model |
UN-TFA1628C-10MP |
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Focal length |
16mm |
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Aperture |
F2.8-16 |
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Image Format |
2/3″ |
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Mount |
C |
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Field Angle D x H x V (°) |
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2/3″ |
1/2″ |
1/3" |
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D |
37.9 |
28.1° |
21.2° |
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H |
30.7° |
22.6° |
17.0° |
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V |
23.3° |
17.1° |
12.8° |
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Optical Distortion |
0.29%@y=5.5mm |
0.15%@y=4.0mm |
0.08%@y=3.0mm |
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M. O. D. |
0.15m~∞ |
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Dimension |
Φ29*41.50mm |
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Flange BFL |
17.526mm |
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Back Focal Length |
8.63mm |
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Operation |
Manual Iris |
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Manual Focus |
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Design Wavelength |
420-1000nm |
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Filter Thread |
M27xP0.5 |
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Optical Crystals
Crystal are main applied for laser application. UNI OPTICS offers the following crystal products.
1. Laser Crystals and Rods: YAG crystal, Nd: YVO4 Crystal
2. Nonlinear Crystals: BBO, KTP, LiNbO3, LBO. KDP&DKDP
3. Birefringent Crystals: YVO4, a-BBO, Calcite.
Infrared Optics Material
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.
| Crystallographic properties | |
| Syngony | Cubic |
| Crystal Form | Poly or Single Crystal |
| Lattice Constant | 5.66 |
| Cleavability | <111>, non-perfect |
| Molecular Weight | 72.6 |
| Physical properties | |
| Density, at 20 °C | 5.33 |
| Hardness, Mohs | 6.3 |
| Dielectric Constant for 9.37 × 109 Hz at 300 K | 16.6 |
| Melting | 937 |
| Thermal Conductivity, W/m·K at at 293 K | 59 |
| Thermal Expansion, 1/K at 298 K | 6.1 × 10-6 |
| Specific Heat Capacity, J/(kgK) at 273-373 K | 0.074 |
| Bandgap, eV | 0.67 |
| Knoop Hardness, kg/mm2 | 800 |
| Youngs Modulus, Gpa | 102.66 |
| Shear Modulus, GPa | 67.04 |
| Bulk Modulus, GPa | 77.86 |
| Debye Temperature, K | 370 |
| Poissons Ratio | 0.278 |
| Elastic Coefficient | C11=129, C12=48.3, C44=67.1 |
| Apparent Elastic Limit | 89.6 MPa (13000psi) |
| Chemical properties | |
| Solubility in water | None |
| Solubility in acids | Soluble |
| Molecular Weight | 72.59 |
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.
Crystallographic properties
Syngony
Cubic
Lattice Constant, A
5.43
Physical properties
Density
2.33g/cm3
Hardness, Mohs
7
Dielectric Constant for 9.37 x 109 Hz
13
Melting point, оС
1414
Thermal Conductivity, W/m·K at 313 K
163
Thermal Expansion, 1/K at 293 K
2.6x10-6
Specific Heat Capacity, J/(kg°C)
712.8
Bandgap, eV
1.1
Knoop Hardness, kg/mm2
1100
Youngs Modulus, Gpa
130.91
Shear Modulus, GPan
79.92
Bulk Modulus, GPa
101.97
Debye Temperature, K
640
Poissons Ratio
0.28
Chemical properties
Solubility in water
None
Molecular Weight
28.09
3、ZnS material:
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.
