Recent content by deepak.midri

Hi, I need to measure the expansion/contraction of lens only. Since sometimes lens develop crack as it is holded in a Aluminium assembly. So when both expand/contract lens develop a crack in it. I need to measure at what expansion/contraction of lens/housing this happen. 1. I am facing...

Application: to measure the thermal strain of optical lens. Due to temperature variation the lens surface is expanding / contracting in radial direction with two extreme operating temperature. (-40C to +70C ) Optical lens is SF56A (CTE - 7.9*e-6 per Kelvin) What to do: I need to measure...