Patent ID: 7988318
Filing Date: 2011-08-02
Classification: F21L,F21Y,G01N,G02C

Abstract:
1. An apparatus comprising: a light-emitting device configured to illuminate a trail of blood from a wounded game animal, the light-emitting device comprising: a red light source configured to emit red light; a green light source configured to emit green light; a first refractive lens configured to direct red light emitted by the red light source to form a red light beam and to direct green light emitted by the green light source to form a green light beam, wherein the red light beam and the green light beam provide a zone of overlapping red and green light outside of the device, the zone of overlapping red and green light when projected onto the blood causing the blood to stand out when following the trail of blood from the wounded game animal; and an optical adjuster configured to adjust a separation distance between the first refractive lens and at least one of the red light source and the green light source.