Reflected light is light bounced off a subject, not falling on it. Reflected light reading is a measurement by a light meter of the amount of reflected light being bounced of the subject. The light meter is pointed towards the subject. Reflecting telescope is a telescope using a concave parabolic mirror to increase focal length and focus light at a point. Reflections are rays of light which strike a surface and bounce back again.
Reflector is any substance from which light can be reflected.
It also describes a white or gray card used to reflect from a main light source into shadow areas. Reflex camera is a camera system which uses a mirror to reflect incoming image rays on to a ground glass screen, providing a system of viewing and focusing. See also SLR . Reflex lens is an alternative term for mirror lens . Refraction is the change in direction of light rays as they pass obliquely from one transparent medium to another of different density, e.g. air to glass.