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to patent search site 4934804
: Focusing optical explosive initiator and
initiator window
| INVENTORS: |
Folsom;
Mark, Hollister, CA
|
| ASSIGNEES: |
Whittaker Ordnance,
Inc., Hollister, CA |
| ISSUED: |
June 19, 1990 |
FILED: |
Jan. 13, 1989 |
| SERIAL
NUMBER: |
296650 |
FEE STATUS: |
|
| INTL.
CLASS (Ed. 5): |
G02B 26/02; |
| U.S.
CLASS: |
350-618; 350-321; |
| FIELD
OF SEARCH: |
350-618,619,625,319,443,620,287,424,96.10
; 362-299,300,307,308,297 ; 102-201
; |
| AGENTS: |
Nist; Donald E.; |
ABSTRACT:
The novel optical explosive initiator employs a
window of a new type. The window hermetically
seals the initiator explosive and is a
transparent preferably monolithic block or
cylinder of glass or the like solid material
having a mirrored convex entrance end in the
configuration of a segment of a spheroid,
paraboloid, ellipsoid or hyperboloid and having
an unmirrored opening therethrough along the
longitudinal axis of the cylinder. The opposite
exit end of the cylinder is mirrored and is
perpendicular to the cylinder longitudinal axis
and is at least nearly flat, preferably entirely
flat. It includes an unmirrored opening along the
longitudinal axis of the cylinder. An optical
fiber transmitting light, such a laser light, can
be positioned adjacent to the entrance opening.
Light passing therethrough and into the cylinder
is reflected from the flat mirrored end back to
the mirrored convex end and is focused to a
concentrated beam of high intensity which focused
beam then passes out the exit opening to an
explosive initiator. Therefore, much less power
is needed to initiate the desired explosive
reaction.
U.S.
REFERENCES:
| Patent No. |
Patentee |
Issue Date |
| 3893754 |
McInally |
July 1 , 1975 |
| 2023332 * |
Malivert |
Dec. 1 , 1935 |
| 2995973 * |
Barnes et al. |
Aug. 1 , 1961 |
|
| No patents reference this one
|
|
* some details unavailable
12
CLAIMS: First Claim Shown (Show all claims)
What is claimed is:
- 1. An improved focusing optical explosive
initiator window, said window comprising
a block of transparent material, said
block having an entrance end comprising a
convex mirror in the shape of a segment
of a generally spherical object, said
mirror having a light receiving central
opening therein along the longitudinal
axis of said block, said block also
having an exit end opposite said entrance
end and comprising an at least generally
flat mirror perpendicular to said
longitudinal axis and having a
light-exiting central opening therein
along said longitudinal axis, whereby
light passing through said entrance
opening into said block is reflected by
said flat mirror back to said convex
mirror, then focused by said convex
mirror and passes out of said block as a
focused beam of increased intensity of
illumination.
RELATED
U.S. APPLICATIONS: none
FOREIGN
REFERENCES: none
OTHER
REFERENCES: none
PRIMARY/ASSISTANT
EXAMINERS: LaRoche; Eugene R.; Tran;
T. V.
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