• Back To:
• home >
• microscopy systems >
• peripherals >
• emission conroller >
• field splitter

Field Splitter

Opto Split II

Features & Benefits of Optosplit II

• Variable internal path separation allows optimum matching with preceding optics
• Dichroic mirror and emission filters mounted in readily interchangeable cube
• Variable rectangular aperture for defining field size
• Unity magnification fitted as standard, but others supplied to order
• Easy image alignment in both x and y planes
• Variable image separation by rotating mirror cradle
• Focus trim available to correct for any chromatic aberration in preceding optics
• Interchangeable mount for neutral density or other correction filter
• Single wavelength imaging using either pathway
• Couples to standard microscope C-mount
• Competitive pricing

Design Features of Optosplit II

Optosplit II schematic

The separation of the images can be varied symmetrically by a single easy adjustment, enhanced by a further adjustment that allows the separation of the optical pathways within the unit to be varied symmetrically as well. A very useful feature, as the required separation depends on the diameters of the individual beams. These in turn depend on the properties of the preceding optics, which can vary over a wide range, especially (as in microscopy applications) where a number of different magnifications may be involved. The dichroic mirror (or other beam separator) and optical filters are now mounted in a single block, and both the block and the standard-sized optical components within it can readily be interchanged.High-magnification systems such as microscopes can introduce significant chromatic aberration, which means that images separated on the basis of wavelength may not simultaneously be in focus, so CAIRN have also made provision for focus trim adjustments in the individual optical pathways to correct for this if necessary. Furthermore, different probes give different outputs, so the individual images may be of significantly different intensity. To correct for this possible imbalance they have provided the facility to add independent apertures or neutral density filtering in either optical pathway, enabling perfect images to be captured every time. To allow for those occasions when it is desirable to use the full camera chip for one of the wavelength images, there is a simple shutter provided to occlude either wavelength pathway and allow the OPTOSPLIT II to be used in a non-split mode.