Verification Examples
Yamada Shadowless Lamps has run various verification tests with outside organizations to find just what an optimal medical light environment is.
Verification of Light that is Gentle to the Eyes:CASE 02
“Light Safety Evaluation: Comparative Verification”
Outside organizer: Mr. Koutaro Kohmoto (CIE [International Commission on Illumination])
Date: 2015, Japan LED Association Hall
Doctors had said that when switching shadowless lamps from halogen to LED light, the glare was causing eye strain, as well as pain at the back of the eye leading to headaches, and that they were worried about the safety of the light for their eyes.
In response, along with Mr. Koutaro Kohmoto of the CIE (International Commission on Illumination), we prepared 3 types of shadowless lamps, Halogen/normal LEDs/our recommended Medical LEDs that are gentle on the eyes, measured the intensity of their reflected light, and performed comparative verification of physical safety risks from blue-light hazard based on human safety International Standard IEC62471-1.
The results showed that at a brightness of 100,000 lx, normal LEDs had about 6.5 times and halogens had about 1.8 times the intensity value of Medical LEDs.Since Shadowless lamps with Medical LEDs have the lowest intensity value, they truly are gentle on the eyes.
Verification of Light that is Gentle to the Eyes:CASE 01
Comparative Verification of Blue Light in Direct Illumination from Shadowless Lamps with Medical LEDs and with Normal LEDs
External Verifier: Takeshi Ide (Vice-Director, Minami Aoyama Eye Clinic, Member of the Blue Light Society)
Date: 2014, Medical Lighting Lab.
In order to verify our hypothesis that shadowless lamps with Medical LEDs have higher color rendering than shadowless lamps with normal LEDs, and thus have a lower blue-light risk and are gentler on the eyes, we got cooperation from Dr. Ide and compared the light exposure under direct illumination.
The comparative verification results show that blue-light exposure from shadowless lamps with Medical LEDs without magnification is about 1/2 of that of shadowless lamps with normal LEDs, and using a low-power magnifier (2.5x) is 1/3 that of shadowless lamps with normal LEDs, a dramatic decrease.
After his study, Dr. Ide, of Minami Aoyama Eye Clinic offered this conclusion: “Shadowless lamps with Medical LEDs are gentler on the eyes than shadowless lamps with normal LEDs.”
