Document ID: chunk:federal_register_of_legislation:F2025L00263:clause:2_5:p8
Version: federal_register_of_legislation:F2025L00263
Segment Type: clause
Provision Reference: sch 2 cl 5 (pt 8/11)
Character Range: 27134–29933

purity.
Pnet: see networked standby power.
Pon: see on-mode power.
Psb: see standby power.
Pst LM: see paragraph (b) of the definition of flicker.
photosynthetic photon efficacy means the rate of flow of photons within the photosynthetically active radiation waveband of 400 – 700 nm from a radiation source.
Note: Photosynthetic photon efficacy is measured in µmol/Joule.
projected light-emitting surface area of an LED lamp means the surface area in mm2 (square millimetres) of the view in an orthographic projection of the light-emitting surface from the direction with the highest light intensity, where the light-emitting surface area is:
 (a) for lamps with a non-clear envelope or with anti-glare shield—the entire area through which light leaves the lamp; or
 (b) for lamps containing more than one light emitter—the projection of the smallest gross volume enveloping all emitters; or
 (c) otherwise—the surface area of the lamp that emits light with the rated optical characteristics.
Example 1: For the purposes of paragraph (c), the light-emitting surface area of an LED chip encapsulated by a flat or semi-spherical phosphor containing envelope would be the surface area of that envelope, not the surface area of the chip. When the LED chip produces light, it is the phosphor-containing envelope which emits light with the rated optical characteristics, when energised by the light produced by the chip. This is illustrated by the following diagram (showing both side and top views):

 projected light-emitting surface area = ¼ πD2
 where D is the diameter of the phosphor containing envelope (and not the dimensions of the rectilinear LED chip beneath the phosphor-coated envelop).
Example 2: For the purposes of paragraph (c), the light emitting surface of an LED filament lamp encapsulated in a clear bulb would be the combined surface areas of LED filaments, not the surface area of the bulb. This is illustrated by the following side view diagram:

 projected light-emitting surface area =   L.D.n
 where L and D respectively are the length and the width of a single LED filament, and n is the number of filaments visible (some may be obstructed) from viewing direction.
rated, in relation to a value for a parameter relating to an LED lamp, means a value:
 (a) that is provided for specification purposes by a person mentioned in subsection 43(3) of the Act; and
 (b) that is based on the declared value; and
 (c) that is specified on, or can be ascertained by following instructions (such as a quick reference code or web link) on, the packaging supplied with the lamp.
Note: This definition is relevant where, for instance, this instrument refers to 'rated optical characteristics' or 'rated voltage' of an LED lamp. Rated values are those typically used for consumer information