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.
product origin:
Chinashipping port:
Fuzhou Chinalead time:
4 working weekspayment:
T/T Payment, Western Union1、What is the longpass filter?
UNI Optics’s longpass (LP) Filter is an optical interference or coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared).
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.
3、Can you provide samples?
Yes, 1-2pcs for testing. Please inform us of your detailed requirements, like Cut-On wavelength, transmission range, etc.
4、Can you offer coating curve?
Yes. Our optical engineers can design it and send it to you for checking.
5、Do you have standard LP filters?
Yes. We have LP470, LP500, LP515, LP530, LP550, LP580, LP590, LP610, LP630, LP695, LP715, LP780, LP830, LP850, LP910, LP920, LP950, LP1000 etc.
Common Transmittance Curve
Fused Silica IPL Filter for Hair Removal
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.
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
UN-ALS50J01
Product Features:
1. Compatible for 30mm Large Format Sensor
2. Large Aperture with F2.4
3.High Relative Illumination
4. Compatible for 2K-4K line scan camera
5. Ultra-low Distortion, low vertical axis chromatic aberration
6. Vibration-resistant and high stability.
Product information:Custom designs are available upon request.
Download the Datasheet of UN-ALS50J01
UN-TFA2518X-12MP
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Taurus Series 4/3″ Format FA Lens(12MP) |
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Model |
UN-TFA2518X-12MP |
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Focal length |
25mm |
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Aperture |
F2.0-F22 |
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Image Format |
4/3″(23mm) |
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Mount |
C |
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Field Angle D x H x V (°) |
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4/3″ |
1″ |
1/2" |
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D |
49.8° |
35.8° |
18.3° |
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H |
40.6° |
28.9° |
14.6° |
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V |
31.1° |
21.8° |
11.1° |
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Optical Distortion |
-0.64%@ y=11.5mm |
-0.48%@ y=8.0mm |
-0.15%@ y=4.0mm |
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M. O. D. |
0.15m |
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Dimension |
Φ47.3*82.7mm |
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Back Focal Length |
22mm |
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Design Wavelength |
420~1000nm |
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Operation |
Manual Iris |
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Manual Focus |
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Filter Thread |
M46.0×P0.75 |
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Weight |
248g |
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Work Temperature |
-20℃～+60℃ |
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UV Fused Silica Plano-Convex (PCX) Lenses
Silicon Windows
UN-GSWIR0814C
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.
N-BK7 metallic coated mirror
1、What Metallic Coated types can Uni-Optics supply?
Uni-Optics mainly offers four coating types, including:
1) UV Enhanced Aluminum : Ravg > 85% from 250nm to 400nm
2) Protected Aluminum: Ravg > 87% from 400nm to 800nm
3) Protected Silver: Ravg > 95% from 400nm to 20um
4) Protected Gold: Ravg > 98% from 650nm to 16um
2、What are the features of Metallic coated mirror?
Metallic coated mirror have many key features below:
Wide spectral range
Not sensitive to the incidence angle and polarization state
Low cost
Non-durable
Relatively low reflectance
Low laser damage threshold
3、What UNI Optics can do for you?
Common Specifications:
Substrate Materials: N-BK7, Fused silica, Pyrex；Float glass
Dimensional tolerance: +/-0.1mm
Surface quality: 60-40
Parallelism: 3’
Flatness: λ/4 per 25mm@633nm
Bevel: Protective
One surface: Polished and Metallic coating
The other surface: Fine ground
Note: Aluminum is the most widely used metal reflection film, from near UV to near IR, have high reflectivity, and with low cost. Silver has higher reflectivity in the visible and near infrared wavelength than the aluminum film, but the silver in the air will be rapid oxidation, color darkening, makes the film performance and firmness declined rapidly. Gold film has a good consistency with high reflectivity in the near, middle and far infrared range, can control the thermal radiation effectively, but it is relatively soft, easy bruising, and should be paid very close attention to clean, and the cost is very high.
UN-TFA7528L-10MP
Tel : +86-591-86395085
Email : sales@uni-optics.com
