(June 25, 2026) Epson has secured another legal victory in its ongoing effort to curb misleading claims about projector brightness, this time reaching a settlement with the projector brand Vizony that will result in dramatic changes to the advertised specifications of one of its models.
At the center of the dispute is the Vizony RD830 projector, which Epson says had been marketed with White Brightness claims of either 15,000 lumens or 800 lumens, depending on the listing. Under the settlement, those figures will be corrected to 370 lumens when measured using ISO 21118, the internationally recognized standard for measuring projector White Brightness. Going forward, Vizony has also agreed to adopt the ISO 21118 standard across its entire projector lineup.
If those numbers seem wildly different, that's because they are. A projector rated at 15,000 lumens would be suitable for exceptionally bright environments and large commercial installations, while 370 lumens is far more representative of a compact consumer projector intended for dimly lit viewing. Differences of this magnitude can significantly alter a buyer's expectations about screen size, room lighting, and overall performance.
The case continues a campaign Epson has been pursuing for several years, as online marketplaces have become flooded with projectors advertising brightness figures that often bear little resemblance to standardized measurements. According to Epson, consumers should be cautious of specifications labeled as "Lux," "LED Lumens," or "Lamp Brightness," since those terms often rely on proprietary or undefined measurement methods, making meaningful comparisons between products nearly impossible.
Epson argues that industry-wide adoption of internationally recognized standards benefits both consumers and manufacturers by creating an apples-to-apples comparison of projector performance. ISO 21118 defines the methodology for measuring White Brightness in lumens, while the International Committee for Display Metrology (ICDM) publishes procedures for measuring Color Brightness in its Information Display Measurement Standards (IDMS). In the United States, ISO 21118 has also been adopted by ANSI, further reinforcing its role as the accepted benchmark for projector brightness measurements.
While this settlement affects only a single projector model, it represents another step in Epson's broader effort to encourage standardized brightness reporting throughout the projector industry. As we've noted before, shoppers comparing projectors – particularly on large online marketplaces – should pay close attention to how brightness is specified. When competing products are measured using different methods, comparing lumen ratings alone can paint a very misleading picture of real-world performance.
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