Negative Meniscus Lens
Dec. 25, 2024
Meniscus Lenses Negative Meniscus(Convex-Concave) lens astronomical optics, part 1: basic optics Negative Meniscus Lens
Dec. 25, 2024
Meniscus Lenses Negative Meniscus(Convex-Concave) lens astronomical optics, part 1: basic optics Negative Meniscus Lens