| 主权项 |
1. A laser profiler comprising:
a laser diode mounted within a substantially cylindrical housing; a conical mirror positioned upstream from the laser diode within the cylindrical housing; and a transparent shroud positioned to surround the conical mirror, wherein, the cylindrical housing comprises a base, a shroud assembly having the transparent shroud positioned therein, and an end cap and the shroud assembly comprises an upper threaded portion threadedly coupled to the end cap, a lower threaded portion threadedly connected to the base, an upper shielding portion extending from the upper threaded portion and having a portion that tapers toward the transparent shroud such that the upper shielding portion extends over an upper portion of the transparent shroud, and a lower shielding portion extending from the lower threaded portion and having a portion that tapers toward the transparent shroud such that the lower shielding portion extends over a lower portion of the transparent shroud, wherein a beam produced by the laser diode is directed to the conical mirror and is reflected therefrom at 360° through the transparent shroud to produce a ring of light, and wherein the upper shielding portion is machined to have an outer diameter that is less than an outer diameter of the upper threaded portion and the lower shielding portion is machined to have an outer diameter that is less than an outer diameter of the lower threaded portion such that a shape of the upper shielding portion and the lower shielding portion shields misaligned light reflected from the conical mirror from passing through the transparent shroud to ensure that the ring of light has a uniform width. |
