LED TV Backlight Lens

How it works

• LED TV
LED (light-emitting diode) TVs use LEDs to illuminate the display, by placing LEDs across the back of the display. They are more power efficient than plasma TVs.




• The light source placed at the back of the screen is called backlight. A light diffuser is placed between the backlight and the screen to uniform the source of light equally across the screen.


• Using LEDs enable a thinner television screen.

Traditional Design

Patented Design (1)

• LPI patented design (2 Fresnel teeth)
• LED array:7x7
• LED spacing distance:82x82mm
• Inner dimension of back plate:578x578mm

Illuminance pattern at 15mm distance from the screen

Illuminance pattern at 20mm distance from the screen

Patented Design (2)

• LPI patented design (3 Fresnel teeth)
• LED array:7x7
• LED spacing distance:82x82mm
• Inner dimension of back plate:578x578mm

Patented Design (3)

• LPI patented design (step structure)
• LED array:7x7
• LED spacing distance:82x82mm
• Inner dimension of back plate:578x578mm

Illuminance pattern at 15mm distance from the screen