object lens

American  

noun

Optics.

1. objective.

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Etymology

Origin of object lens

First recorded in 1825–35

Example Sentences

Diameter of object lens 2-3/4 in., diameter of ocular lens 1 in.

From Early American Scientific Instruments and Their Makers by Bedini, Silvio A.

This is true of the Lick telescope, which has a magnifying power of 2,500 and an object lens a yard across.

From Lost on the Moon Or, in Quest of the Field of Diamonds by Rockwood, Roy

These have been overcome, one after another, until it is now felt that the best modern telescope, with an object lens of twenty-six inches, has fully reached the limit of optical power.

From Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work by Warren, Henry White

She hardly observed that a tear descended slowly upon his cheek, a tear so large that it magnified the pores of the skin over which it rolled, like the object lens of a microscope.

From Tess of the d'Urbervilles by Hardy, Thomas

Diameter of object lens 1-3/4 in., of ocular lens 1-1/8 in.

From Early American Scientific Instruments and Their Makers by Bedini, Silvio A.