The Light flux measures the quantity of light emitted by a light source. The unit of measure is the Lumen or lm.	The Illumination level measures the intensity of the incident light on a surface of 1 m². The unit of measure is the Lux or lx.
Figure 2 - Visual conception of 'Lumen'	Figure 3 - Visual conception of 'Lux'

General remark: consumers buy lumen but they need lux!

Quantity	Symb	SI unit	Abbr.	Notes
Luminous flux = Luminous power	F	lumen (= cd/sr)	lm	Measure of the quantity of light emitted by a light source.
Luminous intensity	Iv	candela (= lm/sr)	cd	Measure of intensity of light emitted by a light source in a particular direction.
Luminance	Lv	candela/m² (= nit)	cd/m²	Amount of light that passes through or is emitted from a particular area, and falls within a given solid angle
Illuminance	Ev	lux (= lm/m²)	lx	Measure of the intensity of the incident light on a surface of 1 m²

There is a difference between monocolor and RGB LED's:

- The color tint of a monocolor LED is inherent to:

• its raw materials
• the manufacturing process of the LED supplier.

- RGB's combine 3 different monochrome LED's (Red, Green, Blue) in one single device. This enables you to change the tint and the color anyway you like it.

Yes, the intensity/brightness of the LED's depends on the current used. By decreasing (or increasing) the current with a dimmer, the LED's will have a lower (or higher) light intensity.

There is a 180° viewing angle at (almost) full light intensity at the light emitting side of the LED's, and the same viewing angle at a lower light intensity at the back side of the LED's.

No, you cannot address each Glassiled LED separately on one and the same Glassiled glass pane. However you can address each glass pane separately to create various effects in terms of colour, graphic design and intensity. By switching the glass on/off, you can also make a message appear/disappear.

A minimal distance between two adjacent LED's must be respected. Depending on the distance from which you're looking at the Glassiled application, the image your eyes will perceive will (not) show a uniform illumination spread all over the glass or will (not) show a number of illuminated dots.

The key advantage of Glassiled is to provide glass transparency while enabling a creative positioning of the Led's and a subtle light effect on the glass.Der Hauptvorteil von Glassiled liegt in der gegebenen Glastransparenz bei gleichzeitiger kreativer Einsatz- und Positionierungsmöglichkeit der LEDs sowie Schaffung raffinierter Lichteffekte auf dem Glas.

In theory, you could mix high power and low power LED's on the same Glassiled glass pane . However, as both of them will receive the same current, there will be no difference in light intensity between them. Mixing high and low power LED's on one and the same Glassiled pane will therefore not achieve any results.

You can mix different monocolour LED's. See previous question - Mixing high and low power LED's on the same Glassiled pane will not achieve any results. In the same way, mixing RGB and monocolour RGB will not achieve any results either

Please check the LED intensity on the data sheets for each application (see measures in mCd).

The uniformity or non-uniformity of the image you see, typically depends on:

• The distance between the Glassiled product and yourself
• The angle from which you're looking at the product
• The quantity of LED's
• The LED colour and the LED pattern