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US-2026057525-A1 · Feb 26, 2026 · US
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Phase contrast optics (in microscopes G02B21/14)
Phase contrast optics (in microscopes G02B21/14) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B27/52 |
| Official title | Phase contrast optics (in microscopes G02B21/14) |
| Display label | Phase contrast optics (in microscopes G02B21/14) |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Observation apparatus and method of visualizing phase object
US-12487438-B2 · Dec 2, 2025 · US
Head-mounted display device
US-12416809-B2 · Sep 16, 2025 · US
Display system, display method, display body, and method for manufacturing display body
US-2025189809-A1 · Jun 12, 2025 · US
Diffractive all-optical computing for quantitative phase imaging
US-2025138296-A1 · May 1, 2025 · US
Head-mounted display device
US-2024393592-A1 · Nov 28, 2024 · US
Observation apparatus and method of visualizing phase object
US-2023280576-A1 · Sep 7, 2023 · US
Methods, systems and apparatus of interferometry for imaging and sensing
US-11598627-B2 · Mar 7, 2023 · US
Method and system for enhanced single particle reflectance imaging
US-11047790-B2 · Jun 29, 2021 · US
Device and method for phase stepping in phase contrast image acquisition
US-11043313-B2 · Jun 22, 2021 · US
Phase object visualization apparatus and phase object visualization method
US-10884230-B2 · Jan 5, 2021 · US
Device and method for phase stepping in phase contrast image acquisition
US-2020383651-A1 · Dec 10, 2020 · US
Method and system for enhanced single particle reflectance imaging
US-2019162647-A1 · May 30, 2019 · US
Partially coherent phase recovery
US-10228554-B2 · Mar 12, 2019 · US
Methods, systems and apparatus of interferometry for imaging and sensing
US-2019056212-A1 · Feb 21, 2019 · US
Microscope apparatus and image forming method
US-2018224646-A1 · Aug 9, 2018 · US
Achromatic phase-contrast imaging
US-9881710-B2 · Jan 30, 2018 · US
Phase object visualization apparatus and phase object visualization method
US-2017351083-A1 · Dec 7, 2017 · US
Partially coherent phase recovery
US-2017059845-A1 · Mar 2, 2017 · US
Polarization-independent differential interference contrast optical arrangement
US-2016259158-A1 · Sep 8, 2016 · US