Achromatic Objective Lens, Fydun Biological Microscope Objectives Lens 4X 185 160/0.17 for

[Conjugate distance: 185]: The 185 conjugate distance is the distance between the object plane and the image plane of the objective lens in the microscope system. Working distance (W.D): 7.63mm [4X Achromatic Objective Lens]: DM-WJ002 Biological Microscope Model 4X Achromatic Objective Lenses, used to correct spherical aberration, positive chromatic aberration in red and blue in the yellow-green range. There is still residual chromatic aberration when It uses the achromatic objective lens, and the curvature of the image field still exists. It can be used for general education and hobbies. [Optical Lens]: It can eliminate unwanted reflections and increase contrast, offering high-quality observation without additional chromatic aberrations, making the image clearer. [RMS Standard Thread]: RMS standard thread, 20mm mounting size, please confirm the thread size of your microscope before purchasing. [Aluminum Alloy Housing]: The outer lens cover material of the lens is made of aluminum alloy and is The aluminum alloy is corrosion resistant and will not rust when exposed to water or products chemicals.It can be used in the laboratory laboratory.The is finely polished and the touch is smooth and comfortable.