Directional backlight
US-2016370594-A1 · Dec 22, 2016 · US
involving directional light or back-light sources
involving directional light or back-light sources · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B30/33 |
| Official title | involving directional light or back-light sources |
| Display label | involving directional light or back-light sources |
| Total patents | 632 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 45 |
| 2017 | 48 |
| 2018 | 43 |
| 2019 | 58 |
| 2020 | 79 |
| 2021 | 73 |
| 2022 | 90 |
| 2023 | 47 |
| 2024 | 65 |
| 2025 | 54 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Directional flat illuminators
US-9519153-B2 · Dec 13, 2016 · US
Complex spatial light modulator and 3D image display including the same
US-9488843-B2 · Nov 8, 2016 · US
Energy efficient directional flat illuminators
US-9482874-B2 · Nov 1, 2016 · US
Autostereoscopic projection device
US-9479765-B2 · Oct 25, 2016 · US
Display apparatus
US-9470899-B2 · Oct 18, 2016 · US
Backlight apparatus and three-dimensional (3d) display apparatus including the same
US-2016291339-A1 · Oct 6, 2016 · US
Autostereoscopic display device and projecting method using the same
US-9454013-B2 · Sep 27, 2016 · US
Display device
US-2016275881-A1 · Sep 22, 2016 · US
Lampshade, backlight module and display apparatus
US-2016266440-A1 · Sep 15, 2016 · US
Superlens component for directional display
US-9436015-B2 · Sep 6, 2016 · US
Three-dimensional image display apparatus and three-dimensional image display
US-2016255337-A1 · Sep 1, 2016 · US
Control of directional display
US-2016252759-A1 · Sep 1, 2016 · US
Control system for a directional light source
US-9429764-B2 · Aug 30, 2016 · US
Stepped waveguide autostereoscopic display apparatus with a reflective directional element
US-9420266-B2 · Aug 16, 2016 · US
Fine-Coarse Autostereoscopic Display
US-2016212413-A1 · Jul 21, 2016 · US
Method for autostereoscopic projection displays
US-2016212416-A1 · Jul 21, 2016 · US
Multibeam diffraction grating-based backlighting
US-2016195664-A1 · Jul 7, 2016 · US
Stereoscopic Display Device and Stereoscopic Display Method
US-2016195730-A1 · Jul 7, 2016 · US
Light-restricted projection units and three-dimensional display systems using the same
US-2016165223-A1 · Jun 9, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02B30/33?
- CPC G02B30/33 is the Cooperative Patent Classification code for “involving directional light or back-light sources.”
- How many patents are filed under CPC G02B30/33 (involving directional light or back-light sources)?
- Our database includes 632 publications tagged with this CPC code.
- Is patent activity under CPC G02B30/33 growing?
- Publication counts under this code: 65 in 2024 vs 54 in 2025 (latest complete years).