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Legal status
Patent not validated
| (51) | INT.CL. | G02B 13/04 | (2006.01) |
| G02B 13/06 | (2013.01) | ||
| G02B 13/06 | (2006.01) | ||
| G02B 13/14 | (2013.01) | ||
| G02B 13/14 | (2006.01) | ||
| G02B 13/04 | (2013.01) |
| (11) | Number of the document | 3655807 |
| (13) | Kind of document | T |
| (96) | European patent application number | 18812411.9 |
| Date of filing the European patent application | 2018-05-01 | |
| (97) | Date of publication of the European application | 2020-05-27 |
| (45) | Date of publication and mention of the grant of the patent | 2024-02-28 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/US2018/030416 |
| Date | 2018-05-01 |
| (87) | Number | WO 2019/032158 |
| Date | 2019-02-14 |
| (30) | Number | Date | Country code |
| 201715654835 | 2017-07-20 | US |
| (72) |
COOK, Lacy, G. , US
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| (73) |
Raytheon Company ,
870 Winter Street, Waltham, MA 02451-1449,
US
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| (54) | TWO-COLOR INVERSE TELEPHOTO REFRACTIVE OPTICAL FORM WITH EXTERNAL PUPIL FOR COLD SHIELDING |
| TWO-COLOR INVERSE TELEPHOTO REFRACTIVE OPTICAL FORM WITH EXTERNAL PUPIL FOR COLD SHIELDING |