How To Choose An LED Lens Or Reflector

WHAT ARE LED OPTICS?
  LED lighting fixtures utilise at least one type of secondary optic to alter the beam of light coming from the LED source. At RS Components we have three families for secondary LED optical films: Lens, Reflectors and Optical & Holder Kits. Here is what you can expect to find in each family:

LENSES
   LED lenses come in various shapes and sizes, for example round, square and hexagonal. Common lens materials include plastic and silicone. Therefore some are rigid and some are flexible.
Lenses are designed for use with single or multiple LEDs. This includes LED modules or strips.
They sit over the LEDs to create the desired lighting effect. Various properties of LED lenses enable precise control over the beams of light. LED lenses can also offer a nice aesthetic appearance by masking the LED components within.

Number of LEDs per Lens 
  This refers to the number of LEDs that the lens is designed for. They can be for single LEDs or arrays of LEDs. Multiple LED lenses are ideal for wide area lighting, for example street lighting.
Lenses are often designed for use with specific LEDs. Check the manufacturer data for compatible LED options.
Some manufacturers pre-mount LEDs onto a board ready for the lens/reflector to sit over, saving you having to solder and line the LEDs up accurately.

REFLECTORS
  LED reflectors sit over the LED to alter the beam of light. They are an affordable and easy-to-use solution for your lighting fitment. However, they do not offer as much control as LED lenses.
Reflectors are made using plastic and can be metal coated.LED reflectors are smooth or multifaceted inside and come in various different shapes. This enables them to create a range of lighting effects.
Some reflectors contain a sub-lens, for additional diffusion or control of the light.