Patent ID: 7525424

Claim:
A trail marker device adapted for prepositioning in a substantially fixed predetermined orientation at a specific trail waypoint or destination and operative to self-illuminate in response to an actuation signal, said trail marker device comprising: a housing; a closure member cooperating with said housing to define a substantially sealed cavity; a light source; a first optical lens juxtapositioned with said light source to focus and project light emitted by said light source within a predetermined viewing sector disposed about a focus axis and extending outwardly from said device; a light reflector disposed adjacent said first lens concentric with said focus axis and configured to re-direct light received from said light source into said viewing sector, and to reflect light received from a remote source located in said viewing sector back along said viewing sector towards said remote source; a field-reconfigurable opaque hood disposed concentrically about said focus axis and extending outwardly from said housing, said hood operative to selectively reduce or limit said viewing sector; a power supply; and a control circuit at least partially disposed within said cavity and operative to selectively electrically interconnect said light source and power supply to effect externally viewable illumination.