Optical instruments are devices that use lenses, mirrors, prisms, or optical fibers to manipulate light for viewing, measuring, analyzing, or recording images and visual information. They are widely used in science, medicine, education, industry, astronomy, photography, and everyday life to enhance human vision and observe objects that are too small, distant, or faint to be seen with the naked eye.
These instruments work on principles such as reflection, refraction, diffraction, and magnification, allowing precise control over light paths and image formation.