Eyepiece lens, observation optical system, and optical apparatus
US-12124023-B2 · Oct 22, 2024 · US
affording a wide-angle view, e.g. through a spy-hole
affording a wide-angle view, e.g. through a spy-hole · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B25/04 |
| Official title | affording a wide-angle view, e.g. through a spy-hole |
| Display label | affording a wide-angle view, e.g. through a spy-hole |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 9 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Observation optical system and optical apparatus
US-2024103262-A1 · Mar 28, 2024 · US
Observation optical system and optical apparatus
US-2023115405-A1 · Apr 13, 2023 · US
Eyepiece for a personal display and personal display comprising such eyepiece
US-11237380-B2 · Feb 1, 2022 · US
Ocular optical system
US-2021373318-A1 · Dec 2, 2021 · US
Wide field of view (WFOV) optical system and method
US-11181731-B1 · Nov 23, 2021 · US
Head-mounted display device
US-11073701-B2 · Jul 27, 2021 · US
Eyepiece lens, observation optical system, and optical apparatus
US-2021199947-A1 · Jul 1, 2021 · US
Oculars and display devices including the same
US-11002951-B2 · May 11, 2021 · US
Compound lens and display device having the same
US-10890695-B2 · Jan 12, 2021 · US
Eyepiece for a personal display and personal display comprising such eyepiece
US-2020116991-A1 · Apr 16, 2020 · US
Eyepiece
US-10606065-B2 · Mar 31, 2020 · US
Large format biocular lens
US-10520720-B2 · Dec 31, 2019 · US
Ocular optical system
US-2019258047-A1 · Aug 22, 2019 · US
Ultra-wide angle camera lens
US-10353193-B2 · Jul 16, 2019 · US
Ocular optical system
US-10317668-B2 · Jun 11, 2019 · US
Head-mounted display device
US-2019155037-A1 · May 23, 2019 · US
Cloaking device and apparatus
US-10267960-B1 · Apr 23, 2019 · US
Compound lens and display device having the same
US-2019025475-A1 · Jan 24, 2019 · US
Large Format Biocular Lens
US-2018348503-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02B25/04?
- CPC G02B25/04 is the Cooperative Patent Classification code for “affording a wide-angle view, e.g. through a spy-hole.”
- How many patents are filed under CPC G02B25/04 (affording a wide-angle view, e.g. through a spy-hole)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC G02B25/04 growing?
- Publication counts under this code: 1 in 2023 vs 2 in 2024 (latest complete years).