LLNF-4T11-H, LLFL-6T11-H, LLWF-6T11-H

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LLNF-4T11-H, LLFL-6T11-H, LLWF-6T11-H (Rev 1.2

– 10/18/2021) p 3/8

Optical Specification

Table 1:

Lens Description Part number

Beam angle

[1]

FWHM

Field angle

[2]

Optical efficiency

[3]

On-axis intensity

[4]

(cd/lm)

Narrow Flood

LLNF-4T11-H

21°

49°

80%

2,8

Flood

LLFL-6T11-H

35°

69°

80%

1,5

Wide Flood

LLWF-6T11-H

47°

96°

75%

1,0

Notes for Table 1:

1.

Lenses can also be ordered without the holder. Replace

–H with –O for this option.

2.

Beam angle is defined as the full width at 50% of the max intensity (FWHM).

3.

Field angle is defined as the full width at 10% of the max intensity.

4.

Optical efficiency is defined as the ratio between the incoming flux and the outgoing flux.

5.

On-axis intensity is defined as the ratio between the total input lumen and the intensity in the optical center of the lens.

Typical Relative Intensity over Angle

– TIR Optics

Figure 1: Typical relative intensity over angle

LLNF-4T08-H

LLFL-6T08-H

LLWF-6T08-H

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10

20

30

40

50

60

70

80

90

Angular Displacement (Degrees)

LLNF-4T11-H

LLFL-6T11-H

LLWF-6T11-H