kenny1999 Posted February 23, 2023 Posted February 23, 2023 We know that convex lens converge light at a point, Is there any other shapes that could also converge light? What if a convex len has only one side circular while the other end is flattened, when the incident light enters the circular side, what will be the transmitted light?
StringJunky Posted February 23, 2023 Posted February 23, 2023 Same as glasses for long-sight. They are called plano-convex lenses: https://www.firebirdoptics.com/blog/intro-to-the-plano-convex-lens#:~:text=A plano-convex lens is,the lens being bowed outward. 1
John Cuthber Posted February 23, 2023 Posted February 23, 2023 A circle (or sphere) is not, in general, the right shape to focus parallel light to a point. https://en.wikipedia.org/wiki/Spherical_aberration
swansont Posted February 23, 2023 Posted February 23, 2023 A flat lens will bend light, if the index of refraction varies with position. GRadient INdex, or GRIN lenses On 2/23/2023 at 11:56 AM, Genady said: No. See Fresnel lens. Expand That still relies on curved surfaces On 2/23/2023 at 8:35 AM, kenny1999 said: What if a convex len has only one side circular while the other end is flattened, when the incident light enters the circular side, what will be the transmitted light? Expand These are called plano-convex (as opposed to bi-convex, curved on both sides) and are quite common.
Genady Posted February 23, 2023 Posted February 23, 2023 On 2/23/2023 at 1:01 PM, swansont said: That still relies on curved surfaces Expand I know.
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