Product Description
This item is a Klinger type PL light trap. Incident light is directed by a black cone to the interior wall of the trap which is also blackened. The return reflection via the cone is attenuated by a factor of about 1:10000. This is approximately 50 times better than a typical light trap.
Thread size – 68mm diameter, 0.75 pitch
Clear aperture – 60mm
Thread length – 11mm
Trap length – 64.5mm
Overall diameter – 85mm
Maximum energy – 30W / square cm.
These traps are useful in photometry applications, acting as a black body standard. Cone may be disassembled for cleaning with lint-free lens tissue, but wiping should be done in a radial manner to avoid concentric marks on the cone. This item appears to be in perfect condition. Model number is PL60, Klinger catalog number is 181 084.
Location MB 145
Photo set 1068