Abstract: The invention provides an improved reflection device comprising a tubular means enclosing a reflective element and arranged for mounting at desired level over a road surface at some distance from the road border. In the preferred embodiment, the tubular means has two open ends, and the reflective element has reflective material at both sides thereof and is arranged for being detachably inserted through a slot in the envelope wall of the tubular means. For eliminating or decreasing the risk of soiling the reflective element, said element is protected by the tubular means which has portions of substantial length in front of both sides of the reflective element. Preferably, each of said portions have a length of at least equal to half the internal maximum cross section dimension of the tubular means at the location of the reflective element. The reflective element is provided with a grip and is easily insertable and removable into and out from said slot.

Abstract: A roadway marker having a housing with a base for engagement with the surface of a roadway, and a reflective wall for reflecting light from vehicles on the roadway. The reflective wall has a central plane extending at an acute angle from the base and is integrally formed with a plurality of spherical reflector elements arranged in side by side relationship. Each of the spherical reflector elements has its center located on the central plane with the portions of the spherical reflector elements that project from one side of the central plane defining an outer, light receiving surface and the portions of the spherical reflector elements that project from the other side of the central plane defining an inner, light reflecting surface of the reflective wall. The reflective wall may be formed by a separate reflector that is mounted in the housing as an insert.

Abstract: Described herein is a system for producing scattered monochromatic radiat. The system comprises a planar material having surface irregularities which are brightly illuminated by the use of a laser radiation source directed parallel to the planar surface so as to graze the surface irregularities with incident radiation. The size of the surface irregularities are designed so as to be large enough to partially scatter the incident radiation while being small enough to permit a substantial portion of the radiation to pass through. A variety of embodiments are described including an arrangement to illuminate a recognizable shape or pattern, and arrangement to illuminate fluid or other droplets disbursed upon a base surface, and arrangement to illuminate the effect of external stimuli (such as acoustic vibrations applied to the surface of the base material) and finally, a coordinate system using two non-parallel laser beams.

Abstract: A two-tone movable safety bicycle reflector having two contrasting reflective surfaces and bracket for selectively supporting the reflector in selected positions on a bicycle.

Abstract: A reflecting apparatus for use with vehicle instrument panels to permit the operator of the vehicle to view instrument indicia when direct viewing thereof is obstructed by the vehicle steering column and/or wheel. A reflecting member is aligned substantially parallel to the instrument panel. The reflecting member has a semicircular profile, the radius of the reflecting member being substantially uniform along the longitudinal length thereof. The reflecting member is pivotal about a point along the longitudinal axis thereof, the pivoting point of the reflecting member being other than the center of curvature of the reflecting member. The reflecting member is typically mounted below the instrument indicia and intermediate the operator of the vehicle and the instrument panel. The relative position of the reflecting member with respect to the instrument indicia provides a noninverted image when viewed by the vehicle operator.

Abstract: A safety reflector comprising two support members which have snap-acting interlocking means on them for releasably locking or securing them together in spaced apart relationship. At least one side of each of the two support members is provided with a reflective material which will reflect light impinged on it.