Claims
- 1. A riflescope arrangement comprising:
- a housing having an optical axis extending therealong;
- an eye piece section mounted near one end of the housing and aligned with the optical axis;
- an objective section mounted in the housing near an opposite end thereof spaced away from the eye piece section and aligned with the optical axis;
- a relay section mounted in the housing, aligned with the optical axis and positioned between the eye piece and objective sections; and
- each of said eye piece, relay and objective sections including at least one optical element for refracting light propagating through the housing along the optical axis, at least one of said optical elements of said eye piece, relay and objective sections comprising an axial gradient index element.
- 2. An arrangement according to claim 1, wherein said objective section has at least one front optical element, said axial gradient index element forming said front optical element.
- 3. An arrangement according to claim 2, wherein at least one additional optical element of said objective, relay and eye piece sections comprises an axial gradient index element.
- 4. An arrangement according to claim 1, wherein said axial gradient index element comprises an axisl gradient index element having an index of refraction which changes long the optical axis.
- 5. An arrangement according to claim 3, wherein said axial gradient index element comprises an axisl gradient index element having an index of refraction which changes long the optical axis.
- 6. An arrangement according to claim 5, wherein said relay section inlcude a reticle and said houisng comprises a tube having open opopsite ends and containing said eye piece section, relay section and objective section.
Parent Case Info
This application is a continuation of application Ser. No. 07/915,570, filed Jul. 20, 1992, now abandoned.
Government Interests
The invention described herein may be made, used or licensed by or for the Government for Government purposes without the payment any royalty to us, pursuant to Contract No. DAAA21-87-C-0123 awarded by the Department of the Army.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3612646 |
Walker et al. |
Oct 1971 |
|
4859040 |
Kitagishi et al. |
Aug 1989 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
915570 |
Jul 1992 |
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