Lighting system control for ophthalmic examinations

Claim 2

In an eye examination room illuminated by a room light, and having a plurality of portable electrical instruments for conducting eye examinations, a hanger panel in said room having a hanger associated with each instrument for holding the same when not in use, circuit means associated with each hanger for causing the associated instrument to be powered only when it is removed from its hanger, first circuit means for supplying power to said room light but operable to disconnect power from said room light, circuit means associated with a first of said hangers including first contact means operated in response to removal of the first instrument from said first hanger, said first circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger powers the first instrument and turns off the room light.

Claim 3

Apparatus according to claim 1 including a first fixation light at one end of the room, and second circuit means operable to supply power to said first fixation light, said second circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger also turns on said first fixation light.

Claim 4

Apparatus according to claim 2 including a dimmer circuit associated with said first circuit means and operable to control the amount of power supplied to said room light, and a manually operable first switch for simultaneously operating said dimmer circuit and de-operating said first circuit means when said first circuit means is operated whereby operation of said first switch while the first instrument is removed from said first hanger turns on the room light at a controlled intensity.

Claim 5

Apparatus according to claim 3 wherein the circuit means associated with a second of said hangers includes second contact means operable in response to removal of the second instrument from said second hanger, said dimmer circuit being operated in response to operation of said second contact means whereby removal of the second instrument from said second hanger when said first instrument is held by said first hanger, powers said second instrument and turns on the room light at a controlled intensity.

Claim 6

Apparatus according to claim 4 including a second fixation light, and third circuit means operable to supply power to said second fixation light, said third circuit means being operable in response to operation of said second contact means whereby removal of the second instrument from said second hanger also turns on said second fixation light.

Claim 7

Apparatus according to claim 5 including a manually operable second switch cooperable with said first switch for selectively operating said first circuit means and turning off the room light when all of the instruments are held in their respective hangers, operation of said first switch subsequent to operation of said second switch causing de-operation of said first circuit means whereby the room light is turned on at a controlled intensity by operation of said first switch subsequent to operation of said second switch.

Claim 8

Apparatus according to claim 6 including a bench-type instrument for examining eyes having a control switch manually operable to turn-on the instrument, and means responsive to operation of said control switch for operating said first circuit means whereby turning on said bench-type instrument turns off the room light.

Claim 9

Apparatus according to claim 5 including a third manually operable switch for operating said second circuit means independently of the operation of said first contact means.

Claim 10

Apparatus according to claim 7 including a fourth manually operable switch for operating said third circuit means independently of the operation of said second contact means.

Claim 11

In an eye examination rool illuminated by a room light, and having a plurality of portable electrical instruments for conducting eye examinations, a hanger panel in said room having a hanger associated with each instrument for holding the same when not in use, circuit means associated with each hanger for causing the associated instrument to be powered only when it is removed from its hanger, first circuit means for supplying power to said room light but operable to disconnect power from said room light, the circuit means associated with a first of said hangers including first contact means operated in response to removal of the first instrument from said first hanger, said first circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger powers the first instrument and turns off the room light, a first fixation light at one end of the room, and second circuit means operable to supply power to said first fixation light, said second circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger also turns on said first fixation light, a dimmer circuit associated with said first circuit means and operable to control the amount of power supplied to said room light, a manually operable first switch for simultaneously operating said dimmer circuit and de-operating said first circuit means when said first circuit means is operated whereby operation of said first switch while the first instrument is removed from said first hanger turns on the room light at a controlled intensity, said circuit means associated with a second of said hangers including second contact means operable in response to removal of the second instrument from said second hanger, said dimmer circuit being operated in response to operation of said second contact means whereby removal of the second instrument from said second hanger when said first instrument is held by said first hanger, powers said second instrument and turns on the room light at a controlled intensity, a second fixation light, and third circuit means operable to supply power to said second fixation light, said third circuit means bieng operable in response to operation of said second contact means whereby removal of the second instrument from said second hanger also turns on said second fixation light, a manually operable second switch cooperable with said first switch for selectively operating said first circuit means and turning off the room light when all of the instruments are held in their respective hangers, operation of said first switch subsequent to operation of said second switch causing de-operation of said first circuit means whereby the room light is turned on at a controlled intensity by operation of said first switch subsequent to operation of said second switch, a bench-type instrument for examining eyes having a control switch manually operable to turn-on the instrument, means responsive to operation of said control switch for operating said first circuit means whereby turning on said bench-type instrument turns off the room light, a third manually operable switch for operating said second circuit means independently of the operation of said first contact means, and a fourth manually operable switch for operating said third circuit means independently of the operation of said second contact means.

Claim 12

In an eye examination rool illuminated by a room light, and having a plurality of portable electrical instruments for conducting eye examinations, a hanger panel in said room having a hanger associated with each instrument for holding the same when not in use, circuit means associated with each hanger for causing the associated instrument to be powered only when it is removed from its hanger, first circuit means for supplying power to said room light but operable to disconnect power from said room light, the circuit means associated with a first of said hangers including first contact means operated in response to removal of the first instrument from said first hanger, said first circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger powers the first instrument and turns off the room light, a first fixation light at one end of the room, and second circuit means operable to supply power to said first fixation light, said second circuit means being operable in response to operation of said first contact means whereby removal of the first instrument from said first hanger also turns on said first fixation light, a dimmer circuit associated with said first circuit means and operable to control the amount of power supplied to said room light, a manually operable first switch for simultaneously operating said dimmer circuit and de-operating said first circuit means when said first circuit means is operated whereby operation of said first switch while the first instrument is removed from said first hanger turns on the room light at a controlled intensity, said circuit means associated with a second of said hangers including second contact means operable in response to removal of the second instrument from said second hanger, said dimmer circuit being operated in response to operation of said second contact means whereby removal of the second instrument from said second hanger when said first instrument is held by said first hanger, powers said second instrument and turns on the room light at a controlled intensity, a second fixation light, and third circuit means operable to supply power to said second fixation light, said third circuit means bieng operable in response to operation of said second contact means whereby removal of the second instrument from said second hanger also turns on said second fixation light, a manually operable second switch cooperable with said first switch for selectively operating said first circuit means and turning off the room light when all of the instruments are held in their respective hangers, operation of said first switch subsequent to operation of said second switch causing de-operation of said first circuit means whereby the room light is turned on at a controlled intensity by operation of said first switch subsequent to operation of said second switch, a bench-type instrument for examining eyes having a control switch manually operable to turn-on the instrument, means responsive to operation of said control switch for operating said first circuit means whereby turning on said bench-type instrument turns off the room light, a third manually operable switch for operating said second circuit means independently of the operation of said first contact means, and a fourth manually operable switch for operating said third circuit means independently of the operation of said second contact means.