Frequency stabilization circuit, frequency stabilization method, and optical comb generator
US-2025260210-A1 · Aug 14, 2025 · US
based on the use of controlled internal reflection
based on the use of controlled internal reflection · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F1/315 |
| Official title | based on the use of controlled internal reflection |
| Display label | based on the use of controlled internal reflection |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 13 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical switch and switching method
US-2025147380-A1 · May 8, 2025 · US
Articles and methods for generating tunable coloration and interference upon reflection of incident electromagnetic radiation
US-2025102716-A1 · Mar 27, 2025 · US
Optical switch and switching method
US-2025093737-A1 · Mar 20, 2025 · US
Programmable waveguide devices and methods
US-2024255788-A1 · Aug 1, 2024 · US
Optical aperture multipliers having a rectangular waveguide
US-11796729-B2 · Oct 24, 2023 · US
Diffractive waveguide providing structured illumination for object detection
US-11747719-B2 · Sep 5, 2023 · US
Devices and methods for polarization splitting
US-11733460-B2 · Aug 22, 2023 · US
Optical aperture multipliers having a rectangular waveguide
US-2023228932-A1 · Jul 20, 2023 · US
Household appliance component
US-11468804-B2 · Oct 11, 2022 · US
Diffractive Waveguide Providing Structured Illumination for Object Detection
US-2022187692-A1 · Jun 16, 2022 · US
Compact Edge Illuminated Diffractive Display
US-2022075242-A1 · Mar 10, 2022 · US
Display panel and driving method thereof, and display system
US-11244639-B2 · Feb 8, 2022 · US
Devices and Methods for Polarization Splitting
US-2022003934-A1 · Jan 6, 2022 · US
Diffractive waveguide providing a retinal image
US-11204540-B2 · Dec 21, 2021 · US
Passive switching in integrated optical components
US-11121520-B1 · Sep 14, 2021 · US
Household appliance component
US-2021142701-A1 · May 13, 2021 · US
Continuous liquid crystal alignment patterns for geometric phase optics
US-10942398-B1 · Mar 9, 2021 · US
Optical device
US-10935854-B2 · Mar 2, 2021 · US
Optical communication switch, optical controlling method, array substrate, and display device
US-10921681-B2 · Feb 16, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F1/315?
- CPC G02F1/315 is the Cooperative Patent Classification code for “based on the use of controlled internal reflection.”
- How many patents are filed under CPC G02F1/315 (based on the use of controlled internal reflection)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC G02F1/315 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).