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Molded Blanks

A molded blank is a blank whose basic surface curves are attained by heating and forming a given weight of raw glass; a rough glass blank resembling the finished lens in size and shape. After molding, a precision lens blank must be fine-annealed to eliminate strain and to restore the refractive index to its stable maximum value.

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Ohara Corporation - Rancho Santa Margarita, CA

Glossary

molded lens A molded lens is an optical lens manufactured using a molding process, typically involving the shaping of a material, such as glass or plastic, into the desired lens shape. This process involves creating a mold with the inverse shape of the desired...
molded blank A blank whose basic surface curves are attained by heating and forming a given weight of raw glass; a rough glass blank resembling the finished lens in size and shape. After molding, a precision lens blank must be fine-annealed to eliminate strain...
optical blank A casting consisting of an optical material molded into the desired geometry for grinding, polishing or, in the case of optical waveguides, drawing to the final optical-mechanical specifications.

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