plus lens


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con·vex lens

a converging lens.
Synonym(s): plus lens

plus lens

A convex lens used to improve visual acuity in hyperopic patients.
Synonym: convergent lens
See also: lens
References in periodicals archive ?
The Figure 3(b) approach uses wideband circuits plus lens feeds that allow simultaneity during transmit or receive but not transmit with receive.
* Adding an end cap: vergence may be corrected before it enters the telescope by adding a simple plus lens 'end cap' to the objective; this method is used typically for spectacle mounted telescopes such as those seen in Figure 8 where a distance unit is mounted onto the patient's spectacles and an additional end cap may be added converting the telescope for use at near.