Online Inquiry
Contact: *
Company:
Subject:
Tel:
E-mail: *
msn
Fax:
 
Content: *
Code: *(marked *should be filled)
 

Longpass Filter

Long pass filters are designed to transmit wavelengths greater than the cut-on wavelength of the filter.

Long pass filters are used to isolate portions of the spectrum in a variety of industrial or life sciences applications including microscopy or fluorescence instrumentation.


Certain Long pass Filters can also be used as cold mirrors to minimize the heat buildup often caused by infrared radiation.


DELN offers a variety of long pass filters with high blocking and maximized transmission.

Specifications

Material

Float glass, B270, BK7, Fused Silica or other

Dimension Tolerance

+0.0/-0.1mm

Thickness Tolerance

±0.2mm

Surface Quality

60/40 or better

Clear Aperture

>90%

Coating

Hard Dielectric Sputtered

Angle of Incidence

0°

Pass Band Transmission

>85% (According to customer's specifications)

Rejection Band Blocking

OD4 (According to customer's specifications)



Cut-On Wavelength (+/-1%)

Transmission Band (nm)

Rejection Band (nm)

400 nm

410-1100

200-390

450 nm

460-1100

200-440

500 nm

510-1100

200-490

550 nm

560-1100

200-540

600 nm

610-1100

200-590

650 nm

660-1100

200-640

700 nm

710-1100

200-685

750 nm

770-1100

400-730

800 nm

820-1100

400-780

850 nm

870-1100

400-830

900 nm

920-1100

400-880

Other Cut-On Wavelength and specifications are available upon request.



CopyRight © DELN I. D. C., LTD.. All Rights Reserved.   Email:[email protected]