[―?]about point source~~~
稱叫毙???秈,и璶??磞酶??翴?方
и琌稱礶??翴?方??lens?focal point?,s.t程????キ︽optical axis
[―?]about point source~~~
could someone tell me how to draw a point light source in a optical sys??
(I want draw a sys that light from a point source and pass a convex lens and cause a collimator light)
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