Epson Resolves Legal Dispute Over Projector Brightness Claims with Dangbei


In a recent development in the technology industry, Epson has settled a lawsuit with Dangbei regarding alleged inaccurate projector brightness figures. The dispute originated from the specifications advertised for the Dangbei Mars Pro projector, which was released in 2022. Epson had accused Dangbei of providing customers with misleading measurements of the projector’s white brightness.

Dangbei had originally claimed that the Mars Pro’s laser light source had a peak brightness of 3,200 lumens. However, in the wake of the settlement, Dangbei has consented to lower this figure to 1,800 lumens. Both parties have come to an agreement that this number represents a more accurate brightness level for the projector.

Moving forward, Dangbei has committed to adhering to international standards for brightness measurements, specifically the ISO 21118 standard. This guideline has been formulated by the International Organization for Standardization (ISO) and sets the parameters for assessing the white brightness output in projectors.

Epson has expressed satisfaction with the outcome, emphasizing that uniform application of these global standards will benefit consumers. This sentiment was echoed by Epson’s representative who commented on the significance of manufacturers employing a consistent set of internationally recognized benchmarks, ultimately favoring the end-users in terms of transparency and ease of understanding.

While Epson has highlighted that this particular case is part of a larger initiative to promote industry-wide adherence to standardized measures, they also caution customers regarding the use of potentially ambiguous metrics like lux, LED lumens, and CVIA lumens.

As for Dangbei’s range of projectors, it remains to be seen if the company will revise the advertised brightness levels for its previous models in line with the newly agreed standards. This settlement could serve as a precedent encouraging transparency and consumer awareness in the projector market.