compound lens

The objective is usually in a cylinder housing containing a glass single or multi-element compound lens.

Compound lens with an unusual property concerning its geometry of image-forming rays.

And a compound lens, very sophisticated.

Net-casting spiders have enormous, compound lenses that give a wide field of view and gather available light very efficiently.

Compound lenses are built to correct this "spherical aberration" or "curvature of field".

An achromatic lens is a compound lenses made with two types of glass with different dispersion.

These microscopes were compound lens instruments, which, unfortunately, suffered greatly from spherical aberration.

The cornea and lens act together as a compound lens to project an inverted image onto the retina.

Each of our ships requires a compound lens of one hundred stones for its translight drive.

Profile These fixtures feature a compound lens which allows the designer to place obstructions within the image path which are then projected.

The lens, which is really only part of a compound lens system, is responsible for the variable part of the focusing.

An entocentric lens is a compound lens which has its entrance or exit pupil inside the lens.

The double Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane.

In most microscopes, the eyepiece is a compound lens, with one component lens near the front and one near the back of the eyepiece tube.

It can be further minimized by using an achromatic lens or achromat, in which materials with differing dispersion are assembled together to form a compound lens.

A dialyte lens (sometimes called a dialyt) is a compound lens design that corrects optical aberrations where the lens elements are widely air-spaced.

A telecentric lens is a compound lens which has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject.

Her skin had a silvery-gray cast; her huge eyes, divided into a honeycomb of cells, were like the compound lenses of certain insects, and the color of blood rubies.

A compound lens is a collection of simple lenses of different shapes and made of materials of different refractive indices, arranged one after the other with a common axis.

A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element.

US&S bought the Hall Company in 1925 thus naming this signal the Style "H," with the later compound lens version (introduced in 1932) referred to as the Style "H-2."

While in principle a simple convex lens will suffice, in practice a compound lens made up of a number of optical lens elements is required to correct (as much as possible) the many optical aberrations that arise.

But the important thing about this Protarlinse is that two of these lens units can be mounted in the same lens barrel to form a compound lens of even greater performance and larger aperture, between f/6.3 and f/7.7.

Rudolph designed one with three cemented elements in 1893, with the option of fitting two of them together in a lens barrel as a compound lens, but it was found to be the same as the Dagor by C.P. Goerz, designed by Emil von Hoegh.