object glass

noun

Optics.

objective ( def 3 ).

object glass

noun

optics another name for objective

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Word History and Origins

Origin of object glass¹

First recorded in 1655–65

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Example Sentences

Examples have not been reviewed.

See Prism, Ð Achromatic telescope, or microscope, one in which the chromatic aberration is corrected, usually by means of a compound or achromatic object glass, and which gives images free from extraneous color.

From

�� the diameter of the object glass was we do not know, perhaps two inches or possibly a little more.

From

The object glass only of the telescope was used.

From

They make a cross line on my object glass.

From

"Except that I have replaced the object glass with the lens I picked up the other day at Thaneford's crow's-nest on Sugar Loaf."

From

object distance objectification

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