Lightolier 7790QD specifications Aperture A19 / A21 / MB19 Fresnel Lenslite

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Calculite® Incandescent Lensed Downlight 7790QD

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7 3/8” Aperture A19 / A21 / MB19 Fresnel Lenslite

40

 

 

 

 

 

 

 

 

 

 

100 Watt A-19

 

 

 

 

 

 

FOOTCANDLES

 

 

 

 

 

 

 

 

 

1750 Lumens Per Lamp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

 

 

 

 

 

 

 

 

 

RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

RCR = 5 (Rm. Width - 2Mtg. Ht. above work plane)

 

 

 

 

 

 

 

 

 

 

25

 

 

 

 

 

 

 

 

 

 

RCR = 10 (Rm. Width - Mtg. Ht. above work plane)

 

 

 

 

 

 

 

 

 

 

Room Surface Reflectances:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

80% Ceiling; 50% Walls; 20% Floor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INITIAL 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

 

50

 

75

100

125

150

175

200

 

 

 

 

 

 

 

AREA PER FIXTURE IN SQUARE FEET

 

 

3

4

5

6

7

8

9

10

11

12

 

13

 

14

 

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

Use quick calculator chart to determine spacing of luminaires for desired level of illumination.

Conversion Factors: 150W A21, F.C. X 1.4

 

 

 

￿

 

 

 

 

 

Spacing Ratio = 1.3

 

 

100W A19

 

 

 

 

 

 

Candlepower Summary

 

90

DEG

CP

ZONAL FLUX

 

0

484

 

 

 

 

 

 

5

492

47

100

 

15

551

156

 

25

558

258

 

60

 

35

389

244

 

 

 

 

45

181

140

200

 

55

71.0

64

 

 

65

25.4

25

 

 

75

2.0

2

300

 

85

0

0

 

90

 

 

 

 

 

 

400

30

 

 

 

 

 

 

 

 

 

ZONE

LUMENS

LAMP

 

 

0-30

461

26.5

500

 

0-40

705

40.5

 

 

0-60

909

52.0

 

 

0-90

936

53.5

E.T.L, Inc. report No. 390909

 

 

 

 

Date: 06-24-64

 

 

 

 

Efficiency: 52.0%

 

 

 

 

COEFFICIENTS OF UTILIZATION

% EFFECTIVE CEILING CAVITY REFLECTANCE

 

 

 

80

 

 

 

70

 

 

50

 

 

30

 

 

 

10

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

30

10

 

 

 

% WALL REFLECTANCE

 

 

 

50

30

10

0

 

 

 

50

30

10

50

30

10

50

30

10

 

 

1

.59

.57

.56

.58

.56

.55

.55

.54

.53

.53

.52

.52

 

.51

.51

.50

.49

RATIO

2

.54

.52

.50

.53

.51

.49

.51

.49

.48

.50

.48

.47

 

.48

.47

.46

.45

3

.50

.47

.44

.49

.46

.44

.47

.45

.43

.46

.44

.42

 

.45

.43

.42

.41

4

.45

.42

.40

.45

.42

.39

.44

.41

.39

.43

.40

.38

 

.41

.40

.38

.37

CAVITY

 

5

.42

.38

.35

.41

.38

.35

.40

.37

.35

.39

.37

.35

 

.38

.36

.34

.33

6

.38

.35

.32

.38

.34

.32

.37

.34

.32

.36

.34

.31

 

.036

.33

.31

30

ROOM

7

.35

.32

.29

.35

.31

.29

.34

.31

.29

.33

.31

.29

 

.33

.30

.28

.28

8

.32

.28

.26

.32

.28

.26

.31

.28

.26

.31

.28

.26

 

.30

.27

.25

.25

9

.29

.26

.23

.29

.25

.23

.28

.25

.23

.28

.25

.23

 

.28

.25

.22

.22

 

 

 

10

.27

.23

.21

.27

.23

.21

.26

.23

.21

.26

.23

.21

 

.25

.22

.20

.19

20% FLOOR CAVITY REFLECTANCE

Conversion Factor: For 150W A21 units, multiply C.U.s by 0.9

Job Information

 

Type:

 

 

 

Lightolier a Genlyte Thomas Company

www.lightolier.com

631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710 We reserve the right to change details of design, materials and finish.

© 2002 Genlyte Thomas Group LLC (Lightolier Division) • A0902

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Contents Catalog Number FeaturesOptions & Accessories Lamp8 Aperture A19 / A21 / MB19 Fresnel Lenslite

7790QD specifications

The Lightolier 7790QD is a sophisticated lighting fixture that epitomizes modern design and advanced technology, making it an ideal choice for various residential and commercial applications. Known for its blend of style and functionality, the fixture is a testament to Lightolier's commitment to quality and innovation in the lighting industry.

One of the standout features of the Lightolier 7790QD is its sleek and minimalist design. Available in a variety of finishes, including brushed nickel and matte black, it easily complements diverse interior styles, from contemporary to traditional. The fixture's clean lines and streamlined shape provide a visually appealing aesthetic that enhances any space without overwhelming it.

An essential characteristic of the 7790QD is its versatility. It is designed to accept various types of bulbs, including LED and CFL options. This flexibility allows users to select the appropriate light source based on their specific needs while promoting energy efficiency and sustainability. The fixture's compatibility with dimmable LED bulbs also enables users to control the ambiance of a room, making it suitable for settings ranging from bright task areas to soft, relaxing environments.

The Lightolier 7790QD is equipped with advanced optical technologies that enhance light distribution. Its well-engineered reflector maximizes lumen output while minimizing glare, ensuring that light is evenly distributed throughout the space. This feature is particularly beneficial in environments where precise lighting is essential, such as art galleries, showrooms, and residential living areas.

Additionally, the 7790QD showcases a convenient quick-disconnect feature. This design element allows for easy installation and maintenance, making it accessible for both professional electricians and DIY enthusiasts. The fixture’s durable construction ensures longevity, providing users with a reliable lighting solution that withstands the test of time.

In summary, the Lightolier 7790QD stands out with its modern aesthetics, versatile bulb compatibility, advanced optical distribution, and convenient installation features. It is an excellent choice for anyone looking to enhance their space with a well-designed, effective lighting solution that marries form with function. Whether for home or commercial use, the 7790QD represents a smart investment in quality lighting.
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