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.
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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
UV Fused Silica
Custom Truncated Doublet and Singlet Lenses
We offer an extensive custom truncated doublet lens service. With our 30 year heritage of experience in the industry means we can always find the right product and specification for you, whether you require exotic materials, or exceptionally tight tolerances, we are confident in our ability to supply to your complete satisfaction. The table below is a brief overview of our doublet lens and is not an exhaustive list. If your individual requirements are not met, then please contact our technical sales team who will be happy to advise.es and is n’t an exhaustive list. If your individual requirements are not met, then please contact our technical sales team who will be happy to advise.
Typical Specifications:
Typical materials: Flint (N/F2) and Crown (BK7)
Flint (SF6) and Crown (N-LAK22)
UV & IR materials on request
Diameter: 3mm to 200mm+
Focal length: 3mm to 1000mm+
Centration: < 3 arcseconds
Surface figure: < 0.1 fringe
Surface quality: < 10/5 Scratch/dig
Coating options: Single layer and BBAR coatings for UV/VIS/NIR with R.avg.<0.25%
More information on the achievable specifications for your individual application can be found by contacting our technical sales team.
UN-TFA1228C-6MP
Product Features:
· Developed for 2/3" image format
· Low distortion
· High relative illumination
· Focus and iris fixed with screw
Product information: Custom designs are available upon request.
UN-TFA1228S-6MP
Product Features:
· Developed for 1/1.8" image format
· Low distortion
· High relative illumination
· Focus and iris fixed with screw
Product information: Custom designs are available upon request.
N-BK7 Corner Cube Retroreflectors Prisms
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Tel : +86-591-86395085
Email : sales@uni-optics.com
