Knowledge base
Daytime Running Lights (DRL)
Daytime running lights (DRLs) are lights on the front of a vehicle that automatically turn on and off to improve visibility during daylight hours . DRLs illuminate continuously while driving...
Read moreBad weather lamps
A foul-weather light is a specially designed light that provides optimal visibility in fog, rain, snow, or poorly lit conditions . This type of lighting is used in automotive, marine,...
Read moreDivergence angle
The divergence angle is the angle at which a light beam or laser spreads out after leaving a source . The greater the divergence angle, the faster the light spreads....
Read moreCollimation angle
The collimation angle is the angle at which light rays deviate from a perfectly parallel (collimated) beam . The smaller the collimation angle, the better the beam is collimated and...
Read moreBihemispherical reflection
Bihemispherical reflectance refers to the total amount of light reflected by a surface, regardless of the angle of incidence or the direction in which it is reflected. This is an...
Read moreBilateral side lighting
Bilateral navigation lights refer to two symmetrical navigation lights on a vessel's port (red) and starboard (green) sides . These lights help other vessels determine a vessel's direction and orientation...
Read moreMasthead Light
A masthead light is a white navigation light located at the front and top of a vessel . This light is mandatory for motorboats and vessels longer than 7 meters...
Read moreStarboard Light
A starboard light is a green navigation light located on the right (starboard) side of a vessel . This light is mandatory for vessels sailing at night or in poor...
Read morePort Light
A port light is a red navigation light located on the left (port) side of a vessel . This light is a mandatory navigation light that helps identify the direction...
Read moreStern Light
A stern light is a white navigation light located at the stern of a vessel . It is a mandatory navigation light that helps vessels be seen at night and...
Read more