erect image

Various means are used to achieve an erect image.

An erect image, in optics, is one that appears right-side up.

While the erect image is setting, the inverted image appears to be rising from the surface.

A common example of an erect image is the image of a person in a standard plane mirror.

It is still used for some spotting scopes because this design creates an erect image without the need for prisms.

The simple negative lens placed before the focus of the objective has the advantage of presenting an erect image but with limited magnification.

A spotting scope is a small portable telescope with added optics to present an erect image, optimized for the observation of terrestrial objects.

It appears with alternations of compressed and stretched zones, erect images and inverted images.

Compound eyes fall into two groups: apposition eyes, which form multiple inverted images, and superposition eyes, which form a single erect image.

The Galilean design has the advantage of presenting an erect image but has a narrow field of view and is not capable of very high magnification.

Hindus defaced Buddhist images; Buddhists carted off statues of Vishnu and erected images of the Buddha, or a Bodhisattva.

In calm weather, a layer of significantly warmer air can rest over colder dense air, forming an atmospheric duct which acts like a refracting lens, producing a series of both inverted and erect images.

A collapsible SLR required a complex light path for the viewfinder, with three mirrors (including one Fresnel reflector) of unusual, aspheric shapes set at odd angles to create an erect image on the film and an erect aerial image for the viewfinder.