Patent ID: 9593036
Date: 2017-03-14
CPC Classifications: C03B

Claim:
1. An apparatus for forming an optical preform, the apparatus comprising: a mold body comprising a mold cavity and an elastically deformable bladder, wherein the elastically deformable bladder is disposed within and lines the mold cavity adjacent to an inner wall of the mold body; a fluid source coupled to the mold cavity between the inner wall of the mold body and the elastically deformable bladder, the fluid source supplying a compressing fluid to the mold cavity to compress the elastically deformable bladder in a radially inward direction; and a rotary device attached to at least one of a first end of the mold body and a second end of the mold body, the rotary device rotating the mold body about a rotational axis of the mold body.