The lens of an optical instrument that is the closest to the object being observed.
1 The field of the great object lens was already suffused with the radiance of her approach.
2 It had only one nosepiece, so that he had to remove the object lens when he wanted any variation in magnification.
3 He ran round by the steps to the lower lawn, Lady Constantine following, as he continued, 'It is a magnificent eight-inch first quality object lens !
4 This is true of the Lick telescope, which has a magnifying power of 2,500 and an object lens a yard across.
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Translations for object lens