Claims
- 1. Apparatus for focusing a beam of radiation which is collimated about an input axis comprising:
- an upper housing through which the beam is able to pass freely;
- a lower housing through which the beam is able to pass freely, the lower housing being connected to, and rotatable with respect to, the upper housing;
- a first means for rotating the lower housing with respect to the upper housing about the input axis, the first rotating means being fixedly connected to the upper housing;
- a side housing through which the beam is able to pass freely, the side housing being connected to, and rotatable with respect to, the lower housing;
- a second means for rotating the side housing with respect to the lower housing about a second axis which is orthogonal with the input axis, the second rotating means being fixedly connected to the lower housing;
- an off axis parabolic reflector mounted in the lower housing in a position which intersects with the input axis to focus and redirect the input beam along the second axis;
- means in the lower housing for rotating the parabolic reflector in the plane of the parabolic reflector; and
- a flat reflector mounted in the side housing in a position which intersects with the second axis to redirect the focused beam along an output axis.
- 2. The invention according to claim 1 wherein the lower housing includes:
- means for adjusting the orientation of the parabolic reflector with respect to the input axis for any set position of rotation.
- 3. The invention according to claim 2 wherein the parabolic reflector is a 90.degree. off axis parabola.
- 4. The invention according to claim 3 wherein the side housing includes a conical extension which projects along the output axis.
- 5. The invention according to claim 4 including further means for internally cooling the parabolic and flat reflectors.
- 6. The invention according to claim 5 including further means for flowing a dry gas across the reflectors and out the conical extension.
Parent Case Info
This is a continuation of application Ser. No. 460,657, filed Apr. 12, 1974, now abandoned.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
Country |
Parent |
460657 |
Apr 1974 |
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