×

Reflector and anti-fog film in an optical sensor system

  • US 6,629,625 B1
  • Filed: 11/15/2001
  • Issued: 10/07/2003
  • Est. Priority Date: 11/21/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. A vending machine for dispensing products on demand, having at least one product delivery path and an optical product delivery sensing system including at least one optical beam emitter configured to emit a beam of light within a wavelength range and at an intensity along an optical pathway for detection by at least one associated optical detector, said at least one optical beam emitter and associated optical beam detector positioned to detect the passage of a product along the product delivery path by interruption of the emitted beam of light, an improvement comprising:

  • at least one layer of anti-fog film disposed between the optical beam emitter and the optical beam detector such that said emitted beam of light passes through said at least one layer of anti-fog film.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×