Patents
US 9632005 B1: Multi order diffractive devices
- Granted
- 2017-04-25
- Filed
- 2015-04-20 application 14691067
- Type
- Utility · 24 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Fizeau interferometers, in-flight metrology systems and methods of testing optical systems are described. Collimated or near collimated light is directed to interact with at least one diffractive focusing element of an optical system. The collimated or near collimated light is modified by the diffractive focusing element to form first diffracted light. The first diffracted light is directed to an image surface of the diffractive focusing element. A portion of light directed from the image surface is reflected by the diffractive focusing element back to the image surface as second diffracted light. The second diffracted light has a different diffraction order than the first diffracted light. The second diffracted light is detected to characterize the optical system.
Source: PVGPATDIS, file of 2026-04-10 (ipg170425.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Exelis Inc. 229 patents | US company or organization | Herndon, VA | EXELIS INC. State business registration EXACT high confidence: identical full name and state EXELIS INC. SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Eugene Olczak | Pittsford, NY | 19 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01M | Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for | G01M11/00 | PVGPATDIS, file of 2026-04-10 |
| G01B | Measuring length, thickness or similar linear dimensions; measuring angles; measuring areas; measuring irregularities of surfaces or contours | G01B9/02015 | PVGPATDIS, file of 2026-04-10 |
| G02B | Optical elements, systems or apparatus | G02B5/1814 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2017-12-04 | Merger Merger | EXELIS INC. signed 2015-12-23 | HARRIS CORPORATION MELBOURNE, FL | 44284/675 | ECORSEXC, file of 2026-09-25 |
| 2015-04-21 | Assignment Assignment of assignor's interest | OLCZAK, EUGENE signed 2015-04-20 | EXELIS, INC. MCLEAN, VA | 35455/446 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.