Method of making an integral window hermetic fiber optic component

Patent · Tue Nov 12 00:00:00 EST 1996

OSTI ID:870682

Dalton, Rick D ^[1]; Kramer, Daniel P ^[2]; Massey, Richard T ^[3]; Waker, Damon A ^[4]

---

1. Miamisburg, OH
2. Centerville, OH
3. Hamilton, OH
4. Bellbrook, OH

In the fabrication of igniters, actuators, detonators, and other pyrotechnic devices to be activated by a laser beam, an integral optical glass window is formed by placing a preform in the structural member of the device and then melting the glass and sealing it in place by heating at a temperature between the ceramming temperature of the glass and the melting point of the metal, followed by rapid furnace cooling to avoid devitrification. No other sealing material is needed to achieve hermeticity. A preferred embodiment of this type of device is fabricated by allowing the molten glass to flow further and form a plano-convex lens integral with and at the bottom of the window. The lens functions to decrease the beam divergence caused by refraction of the laser light passing through the window when the device is fired by means of a laser beam.

• Research Organization: EG & G MOUND APPLIED TECH
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-88DP43495
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 5573565
• Application Number: 08/262,125
• OSTI ID: 870682
• Country of Publication: United States
• Language: English

Related Subjects

method
integral
window
hermetic
fiber
optic
component
fabrication
igniters
actuators
detonators
pyrotechnic
devices
activated
laser
beam
optical
glass
formed
placing
preform
structural
device
melting
sealing
heating
temperature
ceramming
metal
followed
rapid
furnace
cooling
avoid
devitrification
material
achieve
hermeticity
preferred
embodiment
type
fabricated
allowing
molten
flow
form
plano-convex
lens
bottom
functions
decrease
divergence
caused
refraction
light
passing
fired
means
hermetic fiber
glass window
convex lens
sealing material
fiber optic
laser beam
preferred embodiment
laser light
molten glass
light passing
beam divergence
optic component
integral window
/65/102/156/