Head-mounted display apparatus and optical system
US-10466479-B2 · Nov 5, 2019 · US
operating by refraction only
operating by refraction only · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B27/12 |
| Official title | operating by refraction only |
| Display label | operating by refraction only |
| Total patents | 122 |
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 | 10 |
| 2016 | 15 |
| 2017 | 5 |
| 2018 | 20 |
| 2019 | 10 |
| 2020 | 11 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 11 |
| 2024 | 11 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polarizer assembly for spatially separation polarization states of a light beam
US-10394041-B2 · Aug 27, 2019 · US
Light guide device, manufacturing method, and laser diode module
US-10379291-B2 · Aug 13, 2019 · US
Systems, devices, and methods for eyebox expansion in wearable heads-up displays
US-10274736-B2 · Apr 30, 2019 · US
Massively Multi-Frequency Ultrasound-Encoded Tomography
US-2019083049-A1 · Mar 21, 2019 · US
Massively Multi-Frequency Ultrasound-Encoded Tomography
US-2019083059-A1 · Mar 21, 2019 · US
Massively Multi-Frequency Ultrasound-Encoded Tomography
US-2019083048-A1 · Mar 21, 2019 · US
Massively Multi-Frequency Ultrasound-Encoded Tomography
US-2019082964-A1 · Mar 21, 2019 · US
Holographic reproducing apparatus and method, holographic implementing device and method
US-10203660-B2 · Feb 12, 2019 · US
Systems, devices, and methods for eyebox expansion displays in wearable heads-up displays
US-10191283-B2 · Jan 29, 2019 · US
Beam splitter for achieving grazing incidence of light
US-2018364492-A1 · Dec 20, 2018 · US
Display device and manufacturing method thereof
US-10133117-B2 · Nov 20, 2018 · US
Laser device having semiconductor laser array stacks
US-10133079-B2 · Nov 20, 2018 · US
Light irradiation apparatus and drawing apparatus
US-10133187-B2 · Nov 20, 2018 · US
Systems, devices, and methods for eyebox expansion in wearable heads-up displays
US-2018299680-A1 · Oct 18, 2018 · US
Systems, devices, and methods for eyebox expansion in wearable heads-up displays
US-2018299679-A1 · Oct 18, 2018 · US
Wideband ambient light rejection
US-10097771-B2 · Oct 9, 2018 · US
Holographic reproducing apparatus and method, holographic implementing device and method
US-2018275605-A1 · Sep 27, 2018 · US
Systems, devices, and methods for eyebox expansion in wearable heads-up displays
US-2018252926-A1 · Sep 6, 2018 · US
Nano-optic refractive optics
US-2018210214-A1 · Jul 26, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02B27/12?
- CPC G02B27/12 is the Cooperative Patent Classification code for “operating by refraction only.”
- How many patents are filed under CPC G02B27/12 (operating by refraction only)?
- Our database includes 122 publications tagged with this CPC code.
- Is patent activity under CPC G02B27/12 growing?
- Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).