Photonics Dictionary

A lens having each of its outer faces curved outward.

A lens with one concave surface and one convex surface; synonymous with meniscus.

A converging lens with both surfaces convex.

A lens that has one plane surface and one convex surface.

Also known as convergent lens or convex lens. A lens that converges an incident bundle of rays to a focus.

A convex lens that brings an incident bundle of rays to a focus to produce intense heat at the focus.

Convex is an adjective used to describe a surface or shape that curves outward, bulges, or has a rounded and outwardly extending appearance. In the context of geometry or optics, a convex shape is...

The focal length of a lens is the distance between the lens's optical center (or principal point) and the image sensor or film when the lens is focused at infinity. In simple terms, it is the...

An ocular having two planoconvex lenses that are formed from similar glass and that are separated by a space equal to half the sum of their focal lengths. This eyepiece is free of lateral chromatic...

Laser optics refers to a broad category of optical components and systems designed for manipulating and controlling laser light. Laser optics play a crucial role in shaping the characteristics of...

A lens is a transparent optical device that focuses or diverges light, allowing it to pass through and form an image. Lenses are commonly used in optical systems, such as cameras, telescopes,...

A permanent, transparent, and highly transmissive adhesive capable of withstanding extreme temperatures that is applied to optical surfaces for the purpose of cementing, or the sticking together of...

An eyepiece consisting of two planoconvex lenses of the same focal length, with facing convex surfaces.

A compound lens consisting of two negative lenses of flint glass. A double-convex lens of crown glass is cemented between the two negative lenses. With this system, it is possible to decrease...