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1. Colored filters for navigation lights

   The main task of the runway lighting equipment is to ensure the safe landing and take-off of aircraft at night and in conditions of limited visibility.

   Photooptiс Ltd. produces light filters for navigation ground lights of red, yellow, green and blue colors.

   Our filters are highly resistant to enviromental and heat resistance.

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Color coordinates of filter

F.C50

Color coordinates of filter

F.C56

Color coordinates of filter

F.O50

Color coordinates of filter

F. R61

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CIE 1931 chromaticity diagram

Permissible chromaticity fields for navigation ground lights

(Annex 14 to the Convention on international civil aviation, volume 1)

Fig. 1 Color coordinates of light filters for navigation lights

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Coating code

Filter

Characteristics

Spectral specification

F.R61

F.O56

F.C56

F.C50

Color

Red

Yellow

Green

Blue

Chromaticity coordinates.

Light source - 100W halogen lamp

x = 0.701

y = 0.296

x = 0.600

y = 0.399

x = 0.193

y = 0.434

x = 0.131

y = 0.082

Photopic Тph, %

13.0                            56.0                       42.0                            3.5

Technical specification

The substrate material

SCHOTT BOROFLOAT @ 33

Thickness, mm

1.0 - 4.0

Thermal transition

not less than 350°С

Table 1. Characteristics of optical filters for navigation lights