Lighting Design

SERVICES AND EQUIPMENT LIGHTING DESIGN OF APARTMENT

z

AURITREE SARKAR ROLL- 001710201033

4TH YEAR, SEM-1 DEPT OF ARCHITECTURE

Lighting Design of Apartment

Preliminary remarks

Notes on planning: The energy consumption quantities do not take into account light scenes and their dimming levels.

Lighting Design of Apartment

Content

.............................

Preliminary remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Content 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Luminaire list 4. . . . . . . . . . . . . . . . . . . . . . . . . . .

Product data sheets iGuzzini illuminazione - Laser - fixed round 10W (1x LED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5. . . . . . . . . . . . . . . . . . . . . . . . . . . . iGuzzini illuminazione - Underscore 15 14.4W (1x LED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Site 1

Building 1 Luminaire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8. . . . . . . . . . . . . . . . . . . . . . . . . . .

Site 1 - Building 1

Storey 1

Room List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9. . . . . . . . . . . . . . . . . . . . . . . . .............................

Luminaire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 .............................

Calculation objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Site 1 - Building 1 - Storey 1

Room 1

.........................

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 .............................

Luminaire layout plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 .............................

Luminaire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 .............................

Calculation objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 ..............................

Workplane (Room 1) / Perpendicular illuminance (adaptive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Site 1 - Building 1 - Storey 1

Room 2

.........................

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 .............................

Luminaire layout plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 .............................

Luminaire list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 .............................

Calculation objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 ..............................

Workplane (Room 2) / Perpendicular illuminance (adaptive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Lighting Design of Apartment

Content ........................

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Lighting Design of Apartment

Luminaire list Φtotal

Ptotal

Luminous efficacy

14396 lm

187.6 W

76.7 lm/W

pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

33.2 lm/W

13

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

96.0 lm/W

4

Lighting Design of Apartment

Product data sheet IGUZZINI Laser - fixed round 10W

Article No.

Q810

P

10.0 W

ΦLamp

1200 lm

ΦLuminaire

960 lm

η

79.98 %

Luminous efficacy

96.0 lm/W

CCT

3000 K

CRI

90

Polar LDC

Q810 : Round recessed luminaire with contact frame. Fixed Super Comfort version: the LEDs are set a long way back to minimize glare and guarantee a high level of visual comfort. The main body is made of die-cast aluminium with a radiant surface that guarantees optimum heat dissipation. Metallised, thermoplastic, high definition reflector wide flood optic (58°). Structure with die-cast aluminium external contact frame with a single white finish. The internal ring is made of thermoplastic available in a range of painted and metallised finishes.

Safety glass included Quick and easy tool free assembly. High color rendering index 3,000K LED. Power unit available with a separate code no.

Q810.047 - Fixed round recessed luminaire - LED - wide flood Super Comfort - 10W 1200lm - 3000K - CRI 90 - Bianco/nero A09Z - Lamp LED Warm White CRI>90 UGR diagram (SHR: 0.25)

5

Lighting Design of Apartment

Product data sheet IGUZZINI Underscore 15 14.4W

Article No.

MI59_MXL2_MXM2_LE NGTH1

P

14.4 W

ΦLamp

1140 lm

ΦLuminaire

479 lm

η

41.99 %

Luminous efficacy

33.2 lm/W

CCT

3000 K

CRI

80

Polar LDC

MI59 : Linear lighting product - with white monochromatic LEDs - made on silicone-covered white flexible circuit. External protection in clear PVC sheath with end caps. The silicone protection ensures IP65 protection degree for strips with integral length (not cut). The circuit ends are provided with IP20 connectors, therefore the installer is responsible for completing the insulation operations. The product is supplied in 5 metre coils wrapped around special supports; supplied with connection kit for connections in line or power supply. The back of the circuit is provided with adhesive for quick application; mounting accessories are available for more difficult installations The strips can be cut at predefined distances of 100mm (minimum 6 LEDs); in case of intermediate cuts use the end caps supplied and the cut ends must be sealed carefully to restore the protection conditions. LED characteristics: white 3000K (the value is indicative and subject to changes) - 60 LED/m - opening angle 120° - 72W total - power supply 24V. Control gears ordered separately MXL2 :

6

Lighting Design of Apartment

Product data sheet IGUZZINI Underscore 15 14.4W Rigid frameless aluminium profile for surface installation (high version); the shape of the profile allows application of all monochrome Ledstrips with front emission LEDs, available in standard version (with adhesive) or tube version (with outer sheath).

Finishes available: anodised grey - white. The profile may be completed with a diffuser screen available with two finishes: opal and translucid. The raised section of the profile, coupled with the opal diffuser screen, eliminates the pinpoint effect typical of strips.

MXM2 : Specific translucid polycarbonate diffuser screen for Underscore profiles for monochrome Ledstrip.

MI59.000 - flexible strip - 5m - LED blanco - 14.4W 1140lm (1.0 m) 3000K - Indefinito MXL2.001 - High surface linear profile for Ledstrip Top - L=1000 Bianco MXM2.021 - Translucent diffuser screen - L=1000 - Incolore satinato LENGTH1 - Length 1m - 1m LX43 - Lamp LED 3000 K

7

Lighting Design of Apartment

Building 1

Luminaire list Φtotal

Ptotal

Luminous efficacy

14396 lm

187.6 W

76.7 lm/W

pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

33.2 lm/W

13

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

96.0 lm/W

8

Lighting Design of Apartment

Building 1 · Storey 1

Room List

9

Lighting Design of Apartment

Building 1 · Storey 1

Room List Room 1 Ptotal

ARoom

Lighting power density

Ēhorizontal (Workplane)

157.6 W

28.22 m²

5.58 W/m² = 2.04 W/m²/100 lx (Room)

274 lx

pcs.

Manufacturer

Article No. Article name

P

ΦLuminaire

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

10

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

Room 2 Ptotal

ARoom

Lighting power density

Ēhorizontal (Workplane)

30.0 W

3.86 m²

7.78 W/m² = 1.60 W/m²/100 lx (Room)

485 lx

pcs.

Manufacturer

Article No. Article name

P

ΦLuminaire

3

IGUZZINI

Q810

10.0 W

960 lm

Laser - fixed round 10W

10

Lighting Design of Apartment

Building 1 · Storey 1

Luminaire list Φtotal

Ptotal

Luminous efficacy

14396 lm

187.6 W

76.7 lm/W

pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

33.2 lm/W

13

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

96.0 lm/W

11

Lighting Design of Apartment

Building 1 · Storey 1

Calculation objects

12

Lighting Design of Apartment

Building 1 · Storey 1

Calculation objects Work planes Properties

Ē

Emin

Emax

g1

g2

Index

(Target) Workplane (Room 1) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

274 lx (≥ 100 lx)

0.57 lx

546 lx

0.002

0.001

S2

Workplane (Room 2) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

485 lx (≥ 200 lx)

109 lx

768 lx

0.22

0.14

S4

13

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Summary

Ground area: 28.22 m² | Reflection factors: Ceiling: 70.0 %, Walls: 53.3 %, Floor: 34.2 % | Light loss factor: 0.80 (fixed) | Clearance height: 2.700 m - 2.800 m | Mounting height: 2.700 m - 2.712 m

14

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Summary Results Symbol

Calculated

Target

Ē

274 lx

≥ 100 lx

g1

0.002

-

Consumption values

Consumption

[190 - 300] kWh/a

max. 1000 kWh/a

Lighting power density

Room

5.58 W/m²

-

-

2.04 W/m²/100 lx

-

-

Workplane

Check

-

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Rest rooms

Luminaire list pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

33.2 lm/W

10

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

96.0 lm/W

15

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Luminaire layout plan

16

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Luminaire layout plan

Manufacturer

IGUZZINI

Article No.

MI59_MXL2_MXM2_LE NGTH1

Article name

Underscore 15 14.4W

4 x iGuzzini illuminazione Underscore 15 14.4W Type

Line arrangement

X

Y

Mounting height

Luminaire

1st luminaire (X/Y/Z)

1.484 m, 6.676 m, 2.712 m

1.484 m

6.676 m

2.712 m

1

X-direction

4 pcs., Center - center, Distances not equal

2.484 m

6.676 m

2.712 m

2

3.484 m

6.676 m

2.712 m

3

4.484 m

6.676 m

2.712 m

4

Arrangement

A1

17

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Luminaire layout plan

Manufacturer

IGUZZINI

Article No.

Q810

Article name

Laser - fixed round 10W

4 x iGuzzini illuminazione Laser - fixed round 10W Type

Field Arrangement

X

Y

Mounting height

Luminaire

1st luminaire (X/Y/Z)

2.887 m, 0.854 m, 2.700 m

2.887 m

0.854 m

2.700 m

5

X-direction

2 pcs., Center - center, Distances not equal

4.372 m

0.854 m

2.700 m

6

2.887 m

2.151 m

2.700 m

7

4.372 m

2.151 m

2.700 m

8

Y-direction

2 pcs., Center - center, Distances not equal

Arrangement

A2

2 x iGuzzini illuminazione Laser - fixed round 10W Type

Line arrangement

X

Y

Mounting height

Luminaire

1st luminaire (X/Y/Z)

1.110 m, 4.843 m, 2.700 m

1.110 m

4.843 m

2.700 m

9

X-direction

2 pcs., Center - center, 0.955 m

1.110 m

3.888 m

2.700 m

10

Arrangement

A3

18

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Luminaire layout plan

4 x iGuzzini illuminazione Laser - fixed round 10W Type

Field Arrangement

X

Y

Mounting height

Luminaire

1st luminaire (X/Y/Z)

2.703 m, 3.890 m, 2.700 m

2.703 m

3.890 m

2.700 m

11

X-direction

2 pcs., Center - center, Distances not equal

3.950 m

3.890 m

2.700 m

12

2.703 m

5.456 m

2.700 m

13

3.950 m

5.456 m

2.700 m

14

Y-direction

2 pcs., Center - center, Distances not equal

Arrangement

A4

19

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Luminaire list Φtotal

Ptotal

Luminous efficacy

11516 lm

157.6 W

73.1 lm/W

pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

4

IGUZZINI

MI59_MXL 2_MXM2_L ENGTH1

Underscore 15 14.4W

14.4 W

479 lm

33.2 lm/W

10

IGUZZINI

Q810

Laser - fixed round 10W

10.0 W

960 lm

96.0 lm/W

20

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Calculation objects

21

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Calculation objects Work planes Properties

Ē

Emin

Emax

g1

g2

Index

0.57 lx

546 lx

0.002

0.001

S2

(Target) Workplane (Room 1) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

274 lx (≥ 100 lx)

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Rest rooms

22

Lighting Design of Apartment

Building 1 · Storey 1 · Room 1

Workplane (Room 1)

Properties

Ē

Emin

Emax

g1

g2

Index

0.57 lx

546 lx

0.002

0.001

S2

(Target) Workplane (Room 1) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

274 lx (≥ 100 lx)

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Rest rooms

23

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Summary

Ground area: 3.86 m² | Reflection factors: Ceiling: 70.0 %, Walls: 62.6 %, Floor: 34.2 % | Light loss factor: 0.80 (fixed) | Clearance height: 2.700 m | Mounting height: 2.700 m

24

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Summary Results Symbol

Calculated

Target

Ē

485 lx

≥ 200 lx

g1

0.22

-

Consumption values

Consumption

[16 - 25] kWh/a

max. 150 kWh/a

Lighting power density

Room

7.78 W/m²

-

-

1.60 W/m²/100 lx

-

-

Workplane

Check

-

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Cloakrooms, washrooms, bathrooms, toilets

Luminaire list pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

3

IGUZZINI

Q810

10.0 W

960 lm

96.0 lm/W

Laser - fixed round 10W

25

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Luminaire layout plan

26

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Luminaire layout plan

Manufacturer

IGUZZINI

Article No.

Q810

Article name

Laser - fixed round 10W

3 x iGuzzini illuminazione Laser - fixed round 10W Type

Field Arrangement

X

Y

Mounting height

Luminaire

1st luminaire (X/Y/Z)

1.485 m, 1.325 m, 2.700 m

1.485 m

1.325 m

2.700 m

1

X-direction

2 pcs., Center - center, Distances not equal

0.495 m

2.209 m

2.700 m

2

1.485 m

2.209 m

2.700 m

3

Y-direction

3 pcs., Center - center, Distances not equal

Arrangement

A1

27

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Luminaire list Φtotal

Ptotal

Luminous efficacy

2880 lm

30.0 W

96.0 lm/W

pcs.

Manufacturer

Article No. Article name

P

Φ

Luminous efficacy

3

IGUZZINI

Q810

10.0 W

960 lm

96.0 lm/W

Laser - fixed round 10W

28

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Calculation objects

29

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Calculation objects Work planes Properties

Ē

Emin

Emax

g1

g2

Index

109 lx

768 lx

0.22

0.14

S4

(Target) Workplane (Room 2) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

485 lx (≥ 200 lx)

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Cloakrooms, washrooms, bathrooms, toilets

30

Lighting Design of Apartment

Building 1 · Storey 1 · Room 2

Workplane (Room 2)

Properties

Ē

Emin

Emax

g1

g2

Index

109 lx

768 lx

0.22

0.14

S4

(Target) Workplane (Room 2) Perpendicular illuminance (adaptive) Height: 0.800 m, Wall zone: 0.000 m

485 lx (≥ 200 lx)

Utilisation profile: General areas inside buildings - Rest, sanitation and first aid rooms, Cloakrooms, washrooms, bathrooms, toilets

31

Lighting Design of Apartment

Glossary A A

Formula symbol for a surface in the geometry

B Background area

The background area borders the direct ambient area according to DIN EN 12464-1 and reaches up to the borders of the room. In larger rooms, the background area is at least 3 m wide. It is located horizontally at floor level.

C CCT

(Engl. correlated color temperature) Body temperature of a thermal radiator that serves to describe its light color. Unit: Kelvin [K]. The lesser the numerical value the redder; the greater the numerical value the bluer the light color. The color temperature of gas-discharge lamps and semi-conductors are termed "correlated color temperature" in contrast to the color temperature of thermal radiators.

Allocation of the light colors to the color temperature ranges acc. to EN 12464-1: Light color - color temperature [K] warm white (ww) < 3,300 K neutral white (nw) ≥ 3,300 – 5,300 K daylight white (dw) > 5.300 K

Clearance height

The designation for the distance between upper edge of the floor and bottom edge of the ceiling (in the completely furnished status of room).

CRI

(Engl. color rendering index) Designation for the color rendering index of a luminaire or a lamp acc. to DIN 6169: 1976 or CIE 13.3: 1995.

The general color rendering index Ra (or CRI) is a dimensionless figure that describes the quality of a white light source in regards to its similarity with the remission spectra of defined 8 test colors (see DIN 6169 or CIE 1974) to a reference light source.

D Daylight factor

Ratio of the illuminance achieved solely by daylight incidence at a point in the inside to the horizontal illuminance in the outer area under an unobstructed sky.

Formula symbol: D (Engl. daylight factor) Unit: %

32

Lighting Design of Apartment

Glossary Daylight quotient effective area

A calculation surface within which the daylight quotient is calculated.

E Eta (η)

(light output ratio) The light output ratio describes what percentage of the luminous flux of a free radiating lamp (or LED module) is emitted by the luminaire when installed.

Unit: %

G g1

Often also Uo (Engl. overall uniformity) Designates the overall uniformity of the illuminance on a surface. It is the quotient from Emin to Ē and is required, for instance, in standards for illumination of workstations.

g2

Actually it designates the "non-uniformity" of the illuminance on a surface. It is the quotient of Emin to Emax and is generally only relevant for certifying the emergency lighting acc. to EN 1838.

I Illuminance

Describes the ratio of the luminous flux that strikes a certain surface to the size of this surface (lm/m² = lx). The illuminance is not tied to an object surface. It can be determined anywhere in space (inside or outside). The illuminance is not a product feature because it is a recipient value. Luxometers are used for measuring.

Unit: Lux Abbreviation: lx Formula symbol: E

Illuminance, adaptive

For the determining of the middle adaptive illuminance on a surface, this is rastered "adaptively". In the area of large illuminance differences within the surface, the raster is subdivided finer; within lesser differences, a rougher classification is made.

Illuminance, horizontal

Illuminance that is calculated or measured on a horizontal (level) surface (this can be for example a table top or the floor). The horizontal illuminance is usually identified by the formula letter Eh.

Illuminance, perpendicular

Illuminance that is calculated or measured plumb-vertical to a surface. This needs to be taken into account for tilted surfaces. If the surface is horizontal or vertical, then there is no difference between the perpendicular and the horizontal or vertical illuminance.

33

Lighting Design of Apartment

Glossary Illuminance, vertical

Illuminance that is calculated or measured on a vertical surface (this can be for example the front of some shelves). The vertical illuminance is usually identified by the formula letter Ev.

L LENI

(Engl. lighting energy numeric indicator) Lighting energy numeric indicator acc. to EN 15193 Unit: kWh/m² year

Light loss factor

See MF

LLMF

(Engl. lamp lumen maintenance factor)/acc. to CIE 97: 2005 Lamp flux maintenance factor that takes the luminous flux reduction into account of a luminaire or an LED module in the course of the operating time. The lamp flux maintenance factor is specified as a decimal digit and can have a maximum value of 1 (no luminous flux reduction existing).

LMF

(Engl. luminaire maintenance factor)/acc. to CIE 97: 2005 Luminaire maintenance factor that takes the soiling into account of the luminaire in the course of the operating time. The luminaire maintenance factor is specified as a decimal digit and can have a maximum value of 1 (no soiling existing).

LSF

(Engl. lamp survival factor)/acc. to CIE 97: 2005 Lamp survival factor that takes the total failure into account of a luminaire in the course of the operating time. The lamp survival factor is specified as a decimal digit and can have a maximum value of 1 (no failures existing within the time concerned or prompt replacement after the failure).

Luminance

Dimension for the "brightness impression" that the human eye has of a surface. The surface itself can emit light thereby or light striking it can be reflected (emitter value). It is the only photometric value that the human eye can perceive.

Unit: Candela per square meter Abbreviation: cd/m² Formula symbol: L

Luminous efficacy

Ratio of the emitted luminous flux Φ [lm] to the absorbed electrical power P [W] Unit: lm/W. This ratio can be formed for the lamp or LED module (lamp or module light output), the lamp or module with control gear (system light output) and the complete luminaire (luminaire light output).

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Lighting Design of Apartment

Glossary Luminous flux

Dimension for the total light output that is emitted from one light source in all directions.

It is thus an "emitter value" that specifies the entire emitting output. The luminous flux of a light source can only be determined in a laboratory. A difference is made between the lamp or LED module luminous flux and the luminaire luminous flux.

Unit: Lumen Abbreviation: lm Formula symbol: Φ

Luminous intensity

Describes the intensity of the light in a certain direction (emitter value). The luminous intensity is a matter of the luminous flux Φ that is emitted in a certain spherical angle Ω.

The radiation characteristics of a light source are presented graphically in a light distribution curve (LDC). The luminous intensity is an SI base unit.

Unit: Candela Abbreviation: cd Formula symbol: I

M MF

(Engl. maintenance factor)/acc. to CIE 97: 2005 Maintenance factor as decimal number between 0 and 1 that describes the ratio of the new value of a photometric planning parameter (e.g. of the illuminance) to a maintenance value after a certain time. The maintenance factor takes into account the soiling of luminaires and rooms as well as the luminous flux reduction and the failure of light sources.

The maintenance factor is taken into account either overall or determined in detail acc. to CIE 97: 2005 by the formula RMF x LMF x LLMF x LSF.

P P

(Engl. power) Electric power consumption Unit: watt Abbreviation: W

R Reflection factor

The reflection degree of a surface describes how much of the striking light is reflected back. The reflection degree is defined by the color of the surface.

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Lighting Design of Apartment

Glossary RMF

(Engl. room surface maintenance factor)/acc. to CIE 97: 2005 Room surface maintenance factor that takes the soiling into account of the space encompassing surfaces in the course of the operating time. The room surface maintenance factor is specified as a decimal digit and can have a maximum value of 1 (no soiling existing).

S Surrounding area

The ambient area directly borders the area of the visual task and should be planned with a width of at least 0.5 m according to DIN EN 12464-1. It is at the same height as the area of the visual task.

U UGR (max)

(unified glare rating) Measure for the psychological glare effect in interiors.

In addition to luminaire luminance, the UGR value also depends on the position of the observer, the viewing direction and the ambient luminance. Among other things, EN 12464-1 specifies maximum permissible UGR values for various indoor workplaces.

UGR observer

Calculation point in the room, for the DIALux the UGR value is determined. The location and height of the calculation point should correspond to the typical observer position (position and eye level of the user).

V Visual task area

The area that is needed for carrying out the visual task in accordance with DIN EN 12464-1. The height corresponds with the height at which the visual task is executed.

W Wall zone

Circumferential area between working plane and walls that is not taken into account for the calculation.

Workplane

Virtual measuring or calculation surface at the height of the visual task that generally follows the room geometry. The working plane may also feature a wall zone.

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