thin lens


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thin lens

[′thin ′lenz]
(optics)
A lens whose thickness is small enough to be neglected in calculations of such quantities as object distance, image distance, and magnification.
References in periodicals archive ?
A contact lens is a thin lens placed directly on the surface of the eye.
The secretions were collected with 0.5 cm x 2 cm strips of thin lens paper (VWR Scientific Products) fused to Parafilm M (Pechiney Plastic Packaging).
4 is based on the equation for thin lens since the thickness is relatively small compared with the radius.
In the following discussion, be aware that the simple expression (1) below, for magnification M of a thin lens as studied in an engineering physics text like Knight (1), where h' = image height, h = object height, s' = image distance, s = object distance, is not useful in the current context.
(10) Anterior PRVS has been described with the following features: retrolental vascular membrane, elongated ciliary processes, shallow anterior chamber, and thin lens. (2,3,5-7) Posterior PRVS, on the other hand, is often associated with microphthalmia, retinal detachment, tubular- or triangular-shaped structure representing Cloquet's canal, and subretinal hemorrhages.
The abstract states 'The thin lens dimensional image display device generally includes a lens array on a first surface of a film, such as a lenticular lens array or a fly's eye lens array, with a printed imaged either printed directly on a second planar surface of the film, or on a separate substrate that is laminated thereto.
The computer, which will form part of its Qosmio range, has a thin lens in front of the display that can aim a slightly different version of the computer's image towards the user's right and left eyes.
The ultra thin lens of the sporty uvex superfit minimises refraction by bending the rays of light through the glass when the light changes direction, so enhancing the wearers wellbeing.
The treatment involves implanting a thin lens between the eye's natural lens and the iris to permanently correct sight problems such as severe long and short-sightedness.
The treatment involves implanting a thin lens between the eye's natural lens and the iris permanently to correct sight problems such as severe long and short-sightedness.
The next step was to put a posting on the Internet describing the 13-inch's brass cell, the unusually thin lens, and its suspected pre-1900 origin.