PHOTOMETRIC DEVICE Russian patent published in 2016 - IPC G01J1/02 A61F9/08 

FIELD: physics.

SUBSTANCE: photocells 2 are placed on the first disc 1. The disc 1 is attached by a dowel 3 to the second disc 4. Pins 5 having plates 6 at the end are inserted in the openings of the disc 4. The bushing 8 which is attached to boards 9 is placed on the dowel 3. An accumulator battery 10, tubes 11 and amplifiers are attached to the boards 9. Electromagnets 15 are attached to the tubes 11. A person with poor eyesight rotates the boards 9. Spring-loaded contacts 13 tap the voltage of the photocells 2 and transmit the said voltage through wires 14 to amplifiers 12. An armature 16 presses the pins 5 by pushing. The plates 6 move away from the outer wall of the disc 4. The armature 16 presses the next pins 5, whose plates move away from the outer wall of the disc 4. Thus, the contacts 13 and the armature 16, by rotating at different distances from the centre of the discs, traverse an entire circle. The distances of the plates 6 from the outer wall of the disc 4 correspond to the illumination brightness of the photocells 2. The person with poor eyesight, by feeling the plates 6 with fingers, determines an object.

EFFECT: enabling people with poor eyesight to determine far away objects using a photometric device.

2 dwg