- #1
Ray_Xu
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Hi, I'm new to this place, and I'm not sure if my problem fits with this forum, but I'll give it a try.
Right now, I'm building a laser range finder, but my biggest concern will be focusing the reflected laser beam onto a small silicon photodiode. And to add to that, I have barely any knowledge in optics except for the types of lenses, and some terms used in optics. It would be best if there is some manufacturer/distributor that sells lens assemblies (custom or standard). Here are my requirements, so
far:
1. diameter: between/equal 5 inches and 2 inches 2. type: convex, or a lens assembly to focus light 3. no filtering (for now).
4. can be focused by using a rotating motion (such as those on a nikon D70 camera)
Also, I'm having trouble on calculating the amount of reflected light if I were to fire a laser beam at a white surface. Can anyone help me on this?
Ray Xu
Right now, I'm building a laser range finder, but my biggest concern will be focusing the reflected laser beam onto a small silicon photodiode. And to add to that, I have barely any knowledge in optics except for the types of lenses, and some terms used in optics. It would be best if there is some manufacturer/distributor that sells lens assemblies (custom or standard). Here are my requirements, so
far:
1. diameter: between/equal 5 inches and 2 inches 2. type: convex, or a lens assembly to focus light 3. no filtering (for now).
4. can be focused by using a rotating motion (such as those on a nikon D70 camera)
Also, I'm having trouble on calculating the amount of reflected light if I were to fire a laser beam at a white surface. Can anyone help me on this?
Ray Xu
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