Longpass filters allow light with a wavelength greater than the set wavelength to pass through, and cut off light with a wavelength less than the set wavelength.
We have different types of longpass filters in stock, and the products can be customized according to customer specifications, such as ultra-narrow transition band, cutoff depth greater than OD4, special angle application, unconventional thickness customization, etc.
Longpass filters allow light with a wavelength greater than the set wavelength to pass through, and cut off light with a wavelength less than the set wavelength.
We have different types of longpass filters in stock, and the products can be customized according to customer specifications, such as ultra-narrow transition band, cutoff depth greater than OD4, special angle application, unconventional thickness customization, etc.
|
Material |
Optical Glass, Fused Silica, Color Glass,etc. |
|
Dimensional tolerances |
+/-0.1mm |
|
Surface Flatness |
λ/10~1λ |
|
Parallelism |
< 30 arc seconds, <2 arc min |
|
Surface Quality |
10/5,20/10,40/20 |
|
Optical Density Error |
±5% |
|
Edge Chip |
<0.1mm |
|
Bevel |
Protective bevel, or based on clients’ requests |
|
Clear Aperture |
>90% |
|
Coating |
According to customer's request |
The longpass filters provided by AOS Optics have the advantages of wide cutoff bandwidth, deep cutoff depth, high conversion steepness, high transmittance, and good film firmness. Longpass Filter can be widely used in fluorescence excitation spectrum measurement, Raman spectroscopy application, spectral grouping application, and astronomical observation application, etc. In the fields of medical testing instruments, iris recognition, digital imaging, multi-band detection, stage lighting, beauty equipment, etc., it can also be widely used in imaging optical systems and machine vision system applications to eliminate interference light outside the available band, improve imaging clarity, and system sensitivity.
|
Material |
Optical Glass, Fused Silica, Color Glass,etc. |
|
Dimensional tolerances |
+/-0.1mm |
|
Surface Flatness |
λ/10~1λ |
|
Parallelism |
< 30 arc seconds, <2 arc min |
|
Surface Quality |
10/5,20/10,40/20 |
|
Optical Density Error |
±5% |
|
Edge Chip |
<0.1mm |
|
Bevel |
Protective bevel, or based on clients’ requests |
|
Clear Aperture |
>90% |
|
Coating |
According to customer's request |
The longpass filters provided by AOS Optics have the advantages of wide cutoff bandwidth, deep cutoff depth, high conversion steepness, high transmittance, and good film firmness. Longpass Filter can be widely used in fluorescence excitation spectrum measurement, Raman spectroscopy application, spectral grouping application, and astronomical observation application, etc. In the fields of medical testing instruments, iris recognition, digital imaging, multi-band detection, stage lighting, beauty equipment, etc., it can also be widely used in imaging optical systems and machine vision system applications to eliminate interference light outside the available band, improve imaging clarity, and system sensitivity.
Trusted Optical Components Manufacturer
AOS Optics provides custom optical component processing from medium precision to ultra-high precision. From cutting, fine grinding, polishing, coating, to quality inspection before shipment, we complete them all in our own factory, truly providing you with one-stop service...
AOS Optics Co., Ltd
Tel: +86 189 4674 7897
E-mail: inquiry@aosoptic.com
Address: Yiju Road High-Tech Zone,Changchun City,
Jilin Province, China