A new standard for lighting evaluation has already been established in Europe and the United States, considering the state of human pupils!
We would like to introduce "PLM: Pupil Lumen." Recent research has revealed that the traditional brightness standard "Lux" is not directly related to human visual capability. Instead, a new concept called "Pupil Lumen (Plm)," which takes into account the state of the human pupil, has begun to emerge as a new standard for lighting evaluation in Europe and the United States. [Summary (Excerpt)] - The diameter of the human pupil varies between 2 to 8 mm, resulting in an area change of up to 16 times. - In bright environments, the pupil constricts, reducing the amount of light entering the eye. - Conversely, in areas without strong light, the pupil dilates, allowing more light to enter the eye. As a result, one may perceive the environment as brighter than indicated by the Lux value. - The calculation method for pupil lumen involves applying a correction factor (S/P Ratio Correction Factor) to each lighting source. *For more details, please refer to the PDF document or feel free to contact us.
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【Other Overview】 ■ Because the surface area of the light-emitting element in an electrodeless lamp is larger compared to mercury lamps and LEDs, the pupil lumen coefficient is higher. ■ Conversely, mercury lamps and LEDs, being point light sources at the same illuminance (Lux), have a smaller coefficient, causing the pupil to constrict and feel darker. *For more details, please refer to the PDF materials or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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The 'electrode-less lamp' is the ultimate eco-lighting that surpasses LED. ● Power consumption is one-third that of mercury lamps ● Long lifespan of 100,000 hours ● 5-year product warranty This time, we are offering a free booklet filled with explanations of the features of the 'electrode-less lamp' and case studies. For more details, please download the catalog. For specific inquiries, feel free to contact us via the 'Contact Form.' 《We are also looking for sales agents in the Japanese market.》