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AssigneeVarroc Lighting Systems, S.R.O.
InventorsTomas Gloss, Tomas Mateju, Jakub Hruska
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The light guide, especially for motor vehicle signal lamps, comprises a collimator with a collimating wall for binding and routing light rays, and a light guiding body that continues the collimating wall, is of a material with refractive index (n), and is integral, spatially shaped, planar, and fitted at its end with an output emitting surface providing a signal light function. The first height (d) of the body at its beginning where it adjoins the collimating wall, is bigger than its second height where it passes into the emitting surface. The body is adapted to emit light rays generally within angle (ω) of diffusion from the optical axis (x), and comprises a transitional surface that is, in its profile towards the emitting surface, inclined towards the longitudinal axis of the profile. The ratio of inclination height (a) and inclination length (b) of the transitional surface is defined as: a b = tg ( 1 2 arc sin ( sin ω n ) )
A light guide, especially for signal lamps of motor vehicles, comprising at least one collimator with a collimating wall for binding and routing light rays emitted by a lighting means in the light guide, and a light guiding body that continues the collimating wall, is integral, spatially shaped, with a profile elongated in the direction of an optical axis (x), and is fitted at its end with an output emitting surface designed to provide at least one signal light function, with the light guiding body being made of a material with a refractive index (n), wherein a first height (d) of the light guiding body, which is its height at its beginning where the light guiding body adjoins the end of the collimating wall, is bigger than a second height (c) of the light guiding body, which is its height at its end where it passes into the emitting surface, and wherein the light guiding body is adapted to emit light rays essentially within an angle (ω) of diffusion from the direction of the optical axis (x), and wherein the light guiding body comprises at least one transitional surface that is, in the profile of the light guiding body towards the emitting surface, inclined towards the longitudinal axis of the profile, the ratio of the inclination height (a) and inclination length (b) on the transitional surface being defined by the relationship:
Dependencies are inferred from the claim text.