High intensity light shut-down circuit for night vision goggle

Details High intensity light shut-down circuit for night vision goggle High intensity light shut-down circuit for night vision goggle

1987-02-27

1988-07-05

Moore, David K.

Electric lamp and discharge devices: systems

Time-controlled

315159, 315149, 250213VT, 250207, 250213A, 307311, 307597, 307157, H01J 3150

Patent

active

047557257

ABSTRACT:
A circuit for automatically removing battery power from a night vision goggle (10) upon its detachment from a headgear (12) or when subjected to excessive light. A magnet (34) on the headgear (12) is magnetically coupled to a magnetic reed switch (36) fixed to the goggle (10). On detachment of the goggle (10) from the headgear (12), the reed switch (36) switches battery current to a goggle location monitor (75) for drilling on/off control logic (79) to remove power from an image intensifier tube (40). A high intensity light monitor (80) senses when the ambient light exceeds a predefined intensity, for a predetermined period of time, and also drives the control logic (79) to open a switch (86) in series with the battery (38) and the image intensifier tube (40). A low voltage monitor (82) provides a visual indication (84) of reduced battery voltages.

REFERENCES:
patent: 3781560 (1973-12-01), DeBurgh et al.
patent: 3787688 (1974-01-01), Stone
patent: 3890538 (1975-06-01), Iwata et al.
patent: 3944817 (1976-03-01), Hilsum et al.
patent: 4037921 (1977-07-01), Cox
patent: 4091398 (1978-05-01), Iida et al.
patent: 4117376 (1978-09-01), Andrews
patent: 4158155 (1979-06-01), Hauenstein
patent: 4382180 (1983-05-01), Woolgar
patent: 4463252 (1984-07-01), Brennan et al.
patent: 4510419 (1985-04-01), Takematsu
patent: 4593234 (1986-06-01), Yang
patent: 4629881 (1986-12-01), Fairbend et al.
patent: 4672194 (1987-06-01), Kastendieck et al.

Affiliated with

Also associated with

Rating

High intensity light shut-down circuit for night vision goggle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High intensity light shut-down circuit for night vision goggle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High intensity light shut-down circuit for night vision goggle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2334229