How To Use Object lens In A Sentence

• Galileo's telescope had a convex object lens but a concave eye-piece.
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• This translucent ceramic can be advantageously used as, for example, a material for object lens (2) fitted to light pickup (9).
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• We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio (EMR) and to achieve smaller size of focus point and reasonable focus depth.
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• Galileo's telescope had a convex object lens but a concave eye-piece.
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• The purpose of this study is to design a diffraction optical element using magnetorheological fluid for a switchable object lens used in optical pickup head.
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