The Development of LED-Based Dental Light Using a Multiplanar Reflector Design

Abstract

A multiplanar reflector was designed to enhance the application efficiency of light-emitting diode (LED) light sources that can be employed as LED-based dental lights. This study used a high-power LED developed by Nichia, that is, a single LED capable of providing a total luminous flux of 120 lm, as the primarily light source to design and develop an LED-based dental light. This LED complies with the international standards and regulations stipulated in ISO 9680:2007. The light spots produced by the prototype were rectangular, with a length of 200 mm and a width of 100 mm. These light spots achieved maximum illumination of 12,000 lux. The use of LEDs can reduce energy consumption from 50 W to 3 W, providing an energy saving of more than 90%.

Optical design of dental light with high performance and low power based on white LEDs

“…The selection of the dental light must meet the regulation in the request on CCT and CRI [18]. Here we choose a white LED numbered LUXEON Rebel LXM, which was made by Lumileds.…”

“…The reported high packaging efficiency [7,8] makes LEDs useful as a light source for many new applications [9][10][11]. One of the applications is medical light [12][13][14][15][16][17][18].…”

“…In contrast, a white LED is a compact light source with much higher efficiency and lower operation temperature without emitting intense infrared light. To meet the requirement of the regulation of a dental light, a special optical design is required [13][14][15][16][17][18]. According to ISO 9680 [19], the light pattern covers an ellipse area at a distance of 70 cm from the dental light, as shown in Fig.…”

“…Accordingly, Hsieh and Li proposed a dental light in the reflective type [18]. They claimed the prototype could meet the regulation ISO 9680.…”