Long Pass Filter 490 Dielectric Coated Longpass Absorption Coefficient for Longpass Filter

• Customization: Available
• After-sales Service: Easy Return
• Warranty: 5years
• Model NO.: 490nm Longpass Filter
• Usage: Optical
• Thickness Range: 0.5-5mm
• Color: Black
• Type: Thin Film Filter
• Principle: Cut-off Filter
• Material: Glass
• Angle of incidence: 45°
• Shape: Customized
• Certification: RoHS, ISO
• Customized: Customized
• Transport Package: Plastic Case, Carton
• Specification: 5x55mm
• Trademark: Optolong
• Origin: China
• HS Code: 9001909090
• Production Capacity: 100000piece/Month

Product Description

Product Description

 

Brief Introcuction of Longpass Filters

Longpass Edge and Dichroic Filters are designed to transmit wavelengths greater than the cut-on wavelength of the filter.

 

Longpass Edge filter and Dichroic Filters types producted by OPTOLONG are commonly used to isolate portions of the spectrum in a variety of industrial or life sciences applications including microscopy or fluorescence instrumentation. Longpass Filters are typically designed for a 0° Angle of Incidence, whereas.

 

Longpass Dichroic Filters are designed for use at a 45° Angle of Incidence. Certain Longpass Edge Filters can also be used as cold mirrors to minimize the heat buildup often caused by infrared radiation.

Customize
Substrates	B270, BK7, JGS or Customize as needed
CWL	490nm
Blocking range	300nm-475nm
Blocking depth	OD2-OD6
Size(mm)	5*5-85*85mm
Thickness(mm)	0.3mm~5mm
Surface/Coating Quality	40/20,60/40,80/50
Transmittance	> 95% of the common
Edge Treatment(selectable)	Mounted in Black Anodized Aluminum Ring or Not

Company Profile

 

Optolong Optics Co.,ltd supply fluorescence filters and astronomical filters form 1999, we have distributor around the word and had 20 years of experience in the filter industry, mainly including standard products for fluorescence filters, OEM products, and standard products for astronomical filters. 

Our Advantages

Optolong optics manufactured and offers the high quality optical filters since 1999.

Main Products :
1.Bandpass filters
OEM is available for central wavelength at 250-2000nm , FWHM from 7nm to 100nm , blocking range at 200-2500nm , blocking depth at OD2 - OD>6 .
2.Longpass filters & Shortpass filters
Normally used at AOI 0° , blocking depth at OD2 - OD>6 , transmission  Tmin >85%.
3.Dichroic mirrors
Normally used at AOI 45° , blocking depth OD2 - OD>6 , transmission Tmin >85%.
4.Beamsplitters
T50/R50 , T30/R70 , T70/R30
5.Anti-reflective filters
Wavelength at visible band 420-680nm ,  at 340-800nm

Company introduction:
1.Over 20 years IAD hard coating experience which makes stable quality of filters
2.All filters are compliance of RoHs , REACH , and also ISO9001 certified
3.Safety packaging with PP plastic box + PVC sponge + cartons
4.Delivery express DHL , By Air
5.Competitive prices , trustable quality
6.We have five precious vacuum coating machines ,imported spectrophotometer. And we have complete glass/lens cleaning, processing and inspection equipments

Our optical coating layer is very strong

Our curve blocking density depth can reach OD2-OD6

The steepness of our curve can be very steep

Application

 

Certifications

 

Packaging & Shipping

 

Our Team

1. Customize size,thickness,shape as your needed
2. Many material could be choosed, like K9,BK7,B270,D263T,JGS1,Color glass, Float glass, Fused Silica
3. AR HR Hard coating or as your requirements
4. After-sales guarantee service,Optolong is responsible for every piece of optical filter sold