👉 In the context of optics and optical instruments, "subtranslucent" refers to a phenomenon that occurs when light is refracted or bent slightly below its normal angle of incidence. This can happen in certain types of lenses, such as convex mirrors or curved mirrors, where the refractive index of the material between the lens's surface and the object it is focused on changes slightly. For example, a concave mirror (like a concave lens) will tend to bend light slightly below its normal angle
