Optical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors

Optical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors · Cooperative Patent Classification (CPC)

Computing, optics, measurement, and control technologies.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeG02B27/642
Official title{Optical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors}
Display labelOptical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors
Total patents109

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20152
20162
20173
201810
20198
202019
202112
202211
202321
20247
202511
20263

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC G02B27/642?
CPC G02B27/642 is the Cooperative Patent Classification code for “Optical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors.”
How many patents are filed under CPC G02B27/642 (Optical derotators, i.e. systems for compensating for image rotation, e.g. using rotating prisms, mirrors)?
Our database includes 109 publications tagged with this CPC code.
Is patent activity under CPC G02B27/642 growing?
Publication counts under this code: 7 in 2024 vs 11 in 2025 (latest complete years).