The double convex lens/mirror is symmetrical across both its horizontal and vertical axis. Each of the lens's two faces can be thought of as originally being part of a sphere. The fact that a double ...
Diameter Available 3mm--50mm Size tolerance:+/-0.05mm Focal Length Tolerance ±1% Surface Accuracy 入/4 irregularity @632.8nm Surface Quality 40-20 Material BK7, Quartz,SF11 Coating AR coating Diameter ...
I HAVE found the addition of a double concave lens to my telescope and microscope of so much service that I am anxious to call the attention of your readers to this simple application for increasing ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback