3M announces new approach to LED retrofit bulbs

3M announced in August that it is developing a lighting technology called "virtual LED". This technology uses a 3M reflective coating that is precisely designed. It only needs a low-power LED bulb to provide a wide range of applications. Light. Now, 3M, a materials specialist, has released a new LED retrofit bulb. This bulb has once again proved that there is no limitation on the application of SSL technology. This new retrofit application can provide a full range of optical light distribution. This LED retrofit lamp is equivalent to 60W, 800lm, 3000K color temperature soft white light and 5000K color temperature cool white light, the light bulb uses the light guide plate to transmit and evenly distributes the light, the socket is the screw base lamp base. 3M said that if the lamp is used for three hours a day, it can be used for 25 years. The annual electricity consumption is 1.63 US dollars, which is very energy-efficient. It is expected to be sold at US$25 in US retailer Wal-Mart in September.

3M LED modified light bulb profile




The lamp's design is truly different from many other LED retrofit bulbs on the market. The design greatly simplifies the driver. As you can see from the sectional view, the driver is located in a relatively spacious bulb, and most of the SSL variants The drivers located inside the base or neck of the lamp are relatively crowded.

This design allows air to flow into the bottom of the lamp and then out through the slots in the upper half of the bulb to cool LEDs and drivers. This cooling method is also different from most lamps on the market.

As can be seen from the sectional view, the LED chip is installed around the periphery of the bulb neck, the cold white light version uses 9 LED chips, and the warm white light uses 10 LED chips. 3M also uses special materials such as optically transparent adhesives on light bulbs. The design also uses 3M's enhanced light engine specular reflectors and 3M electrical connectors. The 3M light bulb with light guide plate technology and total internal reflection (TIR) ​​technology makes the lamp light distribution very uniform. The light bulb looks similar to a frosted incandescent lamp and appears white in the off state.