LaCroix Optical part #17295. Positive Meniscus, 124.95mm (4.92") diameter by 186.65mm focal length. Center thickness is 20.00mm. Glass is S-TIH6 (dense high index optical glass with index of 1.805. Has Broadband coating with greater than 99.5.5% transmission at 1064nm and 1570nm. Complete spec sheet will be included with your order. Unused. Only have a few
