| 摘要 |
A manufacturing apparatus of a porous glass base material is provided. The manufacturing apparatus includes a burner repeatedly reciprocating in a direction along a longitudinal direction of an axis-rotating base member glass rod, where the burner ejects and deposits glass particles onto the base member glass rod, and an exhaust hood positioned above a porous glass soot formed by the deposition of the glass particles, where the exhaust hood repeatedly reciprocates in a same direction as the burner in synchronization with the burner. Here, the exhaust hood surrounds a portion of the porous glass soot corresponding to an angle ¸ of 100° or more with respect to a central axis of the porous glass soot. To be more specific, the angle ¸ may be preferably 180° or more. |
