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Accessory Filters

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Detailed below are a variety of accessory filters, including beamsplitters, IR blocking filters, IR-DIC filters, polarising filters and multiphoton filters.

If you require neutral density filters, click here.

 

Beamsplitters

 
Beamsplitters are produced by coating fused silica with refractory oxides and rare earth fluorides. As with all dielectrics at non-normal incidence, the performance in the two planes of polarisation is very different. If polarisation is important, please request an individual trace in both orthogonal planes. Beamsplitters are available in standard dichroic sizes and are designed to work at a 45 degree angle of incidence from 400 - 700nm. Numbers indicate transmission/reflectance values. Mirrors consist of metallic coating with protective overcoats designed to reduce the spectral distortion inherent in the metal thin film. Although some polarisation is unavoidable, these mirrors are at the limits of practice in minimising the impact on a randomly polarised signal.

Part Number

Description

Application

Size

XF121

50/50 Beamsplitter

50%T, 50%R

Standard dichroic

XF122

70/30 Beamsplitter

70%T, 30%R

Standard dichroic

XF123

30/70 Beamsplitter

30%T, 70%R

Standard dichroic

XF125

Reflecting Mirror

Black backing prevents transmission, >/= 90% Reflection

Standard dichroic

 

IR Blocking Filters

 

These accessory blocking filters are used to reduce infrared energy, either in the excitation path (XF83) or in the emission path in front of a CCD Camera (XF85, XF86).

Part Number

Description

 Application

Typical T%

Size

XF83

KG5

Blocks infrared energy at the light source

80% avg.

12R, 18R, 20R, 22R, 25R, 32R, 45R, 50R, 50S

XF85

550CFSP

99+% Near IR Attenuation, 600 - 1200nm

> 75%T

12R, 18R, 20R, 22R, 25R, 32R, 45R, 50R, 50S

XF86

700CFSP

99+% Near IR Attentuation, 750 - 1100nm

>90%T

12R, 18R, 20R, 22R, 25R, 32R, 45R, 50R, 50S

 

IR-DIC Filters

 
These filters permit simultaneous capture of fluorescence and infrared DIC images.

Part Number

Description

Application

Size

XF117/32R

780DF35

IR-DIC

32mm

XF117/45R

780DF35

IR-DIC

45mm

 

Polarising Filter

 
This filter is designed to polarise light through the visible region. They are suitable for use in the excitation or emission path of the microscope and are available in a standard size of 50 x 50mm square.

Part Number

Description

Size

XF120

Polarising Filter

50 x 50mm

 

Multiphoton Filters

 
Multiphoton filters are used in conjunction with two- and three-photon IR laser excitation on fluorophores in confocal imaging. With this technique, researchers can section deeper into labelled specimens with minimal photobleaching and photodamage to cells. The dichroic has extended reflection which covers the tunable range of most IR laser lines used for this technique, including Ti:Sapphire. The laser blocking filter will eliminate background scatter from the exciting laser line. Alternate designs are available to suit specific applications.

Part Number

Type

Description

XF2033

Dichroic

675DCSPXR

XF3100

Laser Blocking Filter

710ASP

 

Fluorophore Reference Table

Filter Sets

Exciters

Dichroics

Emitters

Filter Holders

Neutral Density Filters

Accessory Filters

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