The 6231 Secondary Focusing Lens Assembly for Light Sources is used to focus the collimated beam from a condenser and create an image of the arc or filament one focal length (4 inches) away. It consists of a 3 inch (76.2 mm) diameter fused silica plano convex lens and a 3 Inch Series flanged lens holder. It has a 2.7 in. (69 mm) clear aperture, and F/1.5. The model 6237 3 inch lens holder is also available separately if you need to mount a different focal length lens.
|Diameter||3.0 in. (76.2 mm)|
|Focal Length||4.02 in. (102 mm)|
|Flange Series Size||3 Inch|
|Lens Diameter inch (mm)||3 in. (76 mm)|