With Adjustable Interocular Distance Patents (Class 359/411)
  • Binocular with shading device
    Patent number: 5150255
    Abstract: A binocular including two collapsible telescopes mounted to a hat for pivotal movement between a downward extended viewing position and an upward retracted storage position.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: September 22, 1992
    Inventor: Shen-Yuan Lin