Feature of Nikon LCD(CR) Lens -There is correction ring for glass of LCE or OLED, when wish to observe under glass, there have two mediums(air, glass)between lens and observation area. Therefore, image blur phenomenon through refraction rate of light by density differences of those two mediums is occurred. Nikon CR lens is convenient to correspond to various glass samples of LCD regardless of thickness because correction ring can be fit in appropriate calibration according to the glass thickness. -It has excellent properties that the resolving power is higher and the working distance is longer.