公开(公告)号：WO1984004821A1

公开(公告)日：1984-12-06

申请号：PCT/US1984000734

申请日：1984-05-11

Applicant: INCOM, INC.

Inventor： INCOM, INC. ,  JESKEY, Richard, V.

IPC: G02B05/00

CPC classification number: C03B37/01214 ,  C03B23/207 ,  C03B2203/22 ,  C03B2203/40 ,  G02B5/00 ,  G02B5/005 ,  G02B6/0001 ,  G02B6/06 ,  Y10S359/90

Abstract: A radiation conducting conduit functions as an off-axis filter and contrast enhancer for an imaging device. A core of transparent glass has an axis aligned with the line of sight of the device. Cladding is provided which has the same index of refraction and co-efficient of thermal expansion as the core glass, except that a small percentage of the cladding glass is made of thin fibers or leaves of absorbing glass aligned substantially radially to the axis of the conduit and distributed randomly in the volume of the cladding. The interface between the core glass and the cladding glass of the same composition does not involve reflection or refraction, and non-axial light passes through the interface and is trapped among the absorbing black fibers. There, it is reflected and diminuated until it is totally absorbed. The conduit may be formed by the steps of: forming a flat sheet of glass containing random parallel fibers or leaves of absorbing glass, cutting the sheet into beveled strips, assembling the strips into a cylindrical configuration with the absorbing elements extending radially of the axis, inserting a core of transparent glass, and fusing the assembly and core together.

公开(公告)号：WO1988010241A1

公开(公告)日：1988-12-29

申请号：PCT/US1987001557

申请日：1987-06-26

Applicant: INCOM, INC. ,  JESKEY, Richard, V. ,  PLOCHARCZYK, John, R.

Inventor： INCOM, INC.

IPC: C03B37/027

CPC classification number: C03B37/02718 ,  C03B37/028 ,  C03B37/029 ,  C03B2205/56 ,  C03B2205/63 ,  C03B2205/74 ,  C03B2205/80 ,  C03B2205/81 ,  C03B2205/91 ,  C03B2205/98 ,  Y02P40/57

Abstract: Control of speed and uniformity of the heating of the working zone of the preform in a glass drawing operation in which the softening heat is applied by forced convection (13), using a separate fluid heating zone to introduce temperature and velocity controlled fluid. The size of the working zone is further controlled by changing (18) the configuration of a movable exit sleeve. Uniformity and accuracy of temperature is enhanced by normalization (10) of the temperature of the preform close to a preselected value before the preform enters the furnace. A glass drawing apparatus embodies the preferred means to carry out the process, providing a two-chamber furnace having an air heating chamber (44) connected by air delivery channels (51) to a drawing chamber (43). The drawing chamber has preform inlet (41) and a drawn product outlet (56). Each of the latter preferably has an adjustable opening diameter. The inlet is provided with a pre-cooling collar (35). The outlet has an insulated, movable sleeve (62) controlling the effective distance from the inlet to the outlet by modifying the temperature gradient. The latter provides means for controlling the length and shape of the working zone (55).

Abstract translation: 在通过强制对流（13）施加软化热的玻璃拉拔操作中，使用单独的流体加热区引入温度和速度受控流体来控制预成型件的工作区域的加热速度和均匀性。 通过改变（18）可移动出口套筒的构造来进一步控制工作区域的尺寸。 温度的均匀性和准确性通过在预成型坯进入炉之前接近预定值的预成型件的温度归一化（10）来提高。 玻璃拉伸装置体现了实施该方法的优选方式，提供了一个具有通过空气输送通道（51）连接到拉伸室（43）连接的空气加热室（44）的双室炉。 拉伸室具有预成型件入口（41）和拉制产品出口（56）。 后者优选具有可调开口直径。 入口设有预冷套环（35）。 出口具有绝缘的可移动套管（62），通过改变温度梯度来控制从入口到出口的有效距离。 后者提供用于控制工作区（55）的长度和形状的装置。