Optical Equipment (2)

Ray diagram showing the formation of the final image in a telescope

Examples of optical instruments using lenses (1)

Digital single-lens reflex (DSLR) camera with two different lenses

Examples of optical instruments using lenses (2)

High-resolution closed-circuit television (CCTV)

Examples of optical instruments using lenses (3)

Spy camera in safety device

Importance of technological advancements in the field of optics

Enabled lenses used in optical instruments such as smartphones and closed-circuit television (CCTV) to be only several millimetres thick