APPARATUS FOR DETERMINING SPEED OF MOVEMENT OF SPORTSMAN Russian patent published in 1998 - IPC

FIELD: sports equipment, in particular, equipment for determining speed of movement of mountain climber, runner, cyclist etc. SUBSTANCE: apparatus has pipe mounted in upper part of protective glasses body. Air flow sensitive member made in the form of impeller with photodiode is disposed within pipe and connected with electronic converter and digital indicator, such as liquid-crystal indicator operating in transmitted light. Viewing glasses are attached to lower part of rim body. Light window is made in upper part of rim body at the right and left sides. Fiber focon, light wedge with incandescent lamp and objective forming digital indicator information in parallel light beams are arranged in succession within window cavity. Planar mirror with outer reflective covering is secured between viewing glasses in their lower part and adapted for deviating optical axis of objective. Mirror directs parallel light beams carrying information picture image from digital indicator onto sportsman eye pupil. EFFECT: enhanced reliability in operation, increased information perception rate and convenient operation. 2 cl, 3 dwg