Lamp and assembling method thereof

The invention relates to a lamp and an assembly method thereof. The lamp is provided with an internal lamp and an external lamp, and is capable of improving the light control precision by controlling the positioning precision of the internal lens relative to a light source. The lamp (10) comprises a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAORU YAMAMOTO, KOSUGI KAZUKI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention relates to a lamp and an assembly method thereof. The lamp is provided with an internal lamp and an external lamp, and is capable of improving the light control precision by controlling the positioning precision of the internal lens relative to a light source. The lamp (10) comprises a substrate (40), a semiconductor light source (60), which is arranged on the substrate so as to upwardly install the light axis; an internal lens (20), which comprises an incident plane, an internal reflective plane that can reflect the incident lights from the incident plant roughly in a horizontal direction, and an exit plane that can reflect the reflected lights from the internal reflective plane; and a external lens which is roughly in a cylindrical shape and can diffuse the lights from the exit plane to the vertical directions up and down. The internal lens (20) comprises a positioning part (28) which can fix the internal lens on the substrate so that the incident plant is on the light axis of the semiconductor light source.