optical lens meaning in Hindi

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Littleton incorporated optical lens blanks manufactured by Corning with his own hot-worked glass.
The PC Magni-Viewer is the first acrylic optical lens PC magnifier.
In 1943, he got a job grinding optical lenses in Toronto.
The sale ends Pilkington's 17 years in the optical lens business.
The cost of optical lenses could be a deciding factor.
Similar machines are used to produce optical lenses and mirrors.
Definitely not a vacuum cleaner opening . seems optical lens ( ? ) inside.
The explosive lens is conceptually similar to an optical lens, which focuses light waves.
The company was founded by Haruji Yamamoto, as Yamamoto Optical Lens Factory, in Osaka.
In addition, CPV systems require optical lenses or mirrors and sometimes a cooling system.

noun.