Hi!I have a question to NATURALPOINT company :do they have some medical certificate on TRACKIR products & how its harmed to my health (if it is),when infra red leds shining to my eyes & head in general?Beforehand,thank you for your answer
p.s I think there are many people interested in that question .
I want to know
Re: I want to know
The LEDs emit at 880nm and are standard off the shelf IR LEDs, we run them all the time when the unit is turned on. There are 4 of them and they each have a total radiant output of about 23mw/sr, which is 23miliwats per ster radian. Total output power is NOT 4 X 23 mw/sr as the LEDS do not overlap exactly; they create a coverage pattern with slight overlap at the edges. Also, the LEDs to not emit a uniform brightness, they have an angle to half intensity, so the center of the overlapping LEDs is the SAME brightness as the center of each LEDs output, hope that makes sense.
Your eyes ARE sensitive to IR light, you can�t see it, but your eyes will register the �power� of the light, your pupils will shrink down as if you were looking at light in the visible spectrum. Remember, we are just slightly above red in the visible spectrum. You won�t feel your pupils getting smaller when our device turns on because we are a relatively low level of light for an average room condition. If you turn out all the lights in the room, put the unit about 1 foot away from your face and watch your eyes in a mirror, you will see your pupils contract, they are �seeing� the IR light.
As for the amount of power the LEDs output, it is many of times lower than simply going outside, not to mention on a bright sunny day. As I had seen posted before, we are a small fraction of the IR output from a normal incandescent light bulb. ANSI references spec ANSI Z 136.1 � 2000 for laser power emission, but we are not a laser, so in the back of the spec they reference ANSI/IESNA RP-27.1-96, which is the spec for lamp output, basically what we are and what ANSI says to use. Maximum exposure for our wavelength range, which is from 700nm to 1100nm is 10mw/cm2. To convert our power output, which is about 30mw/sr, we apply sr x 1cm2/distance2. Typical user distance is 18� or about 45cm (on the conservative side, most users are further away), so 30mw/2025 = .015mw/cm2. Needless to say, we are on the safe side!
If you have any further questions or concerns please let us know.
Your eyes ARE sensitive to IR light, you can�t see it, but your eyes will register the �power� of the light, your pupils will shrink down as if you were looking at light in the visible spectrum. Remember, we are just slightly above red in the visible spectrum. You won�t feel your pupils getting smaller when our device turns on because we are a relatively low level of light for an average room condition. If you turn out all the lights in the room, put the unit about 1 foot away from your face and watch your eyes in a mirror, you will see your pupils contract, they are �seeing� the IR light.
As for the amount of power the LEDs output, it is many of times lower than simply going outside, not to mention on a bright sunny day. As I had seen posted before, we are a small fraction of the IR output from a normal incandescent light bulb. ANSI references spec ANSI Z 136.1 � 2000 for laser power emission, but we are not a laser, so in the back of the spec they reference ANSI/IESNA RP-27.1-96, which is the spec for lamp output, basically what we are and what ANSI says to use. Maximum exposure for our wavelength range, which is from 700nm to 1100nm is 10mw/cm2. To convert our power output, which is about 30mw/sr, we apply sr x 1cm2/distance2. Typical user distance is 18� or about 45cm (on the conservative side, most users are further away), so 30mw/2025 = .015mw/cm2. Needless to say, we are on the safe side!
If you have any further questions or concerns please let us know.
Re: I want to know
thank you for operative answerThe LEDs emit at 880nm and are standard off the shelf IR LEDs, we run them all the time when the unit is turned on. There are 4 of them and they each have a total radiant output of about 23mw/sr, which is 23miliwats per ster radian. Total output power is NOT 4 X 23 mw/sr as the LEDS do not overlap exactly; they create a coverage pattern with slight overlap at the edges. Also, the LEDs to not emit a uniform brightness, they have an angle to half intensity, so the center of the overlapping LEDs is the SAME brightness as the center of each LEDs output, hope that makes sense.
Your eyes ARE sensitive to IR light, you can�t see it, but your eyes will register the �power� of the light, your pupils will shrink down as if you were looking at light in the visible spectrum. Remember, we are just slightly above red in the visible spectrum. You won�t feel your pupils getting smaller when our device turns on because we are a relatively low level of light for an average room condition. If you turn out all the lights in the room, put the unit about 1 foot away from your face and watch your eyes in a mirror, you will see your pupils contract, they are �seeing� the IR light.
As for the amount of power the LEDs output, it is many of times lower than simply going outside, not to mention on a bright sunny day. As I had seen posted before, we are a small fraction of the IR output from a normal incandescent light bulb. ANSI references spec ANSI Z 136.1 � 2000 for laser power emission, but we are not a laser, so in the back of the spec they reference ANSI/IESNA RP-27.1-96, which is the spec for lamp output, basically what we are and what ANSI says to use. Maximum exposure for our wavelength range, which is from 700nm to 1100nm is 10mw/cm2. To convert our power output, which is about 30mw/sr, we apply sr x 1cm2/distance2. Typical user distance is 18� or about 45cm (on the conservative side, most users are further away), so 30mw/2025 = .015mw/cm2. Needless to say, we are on the safe side!
If you have any further questions or concerns please let us know.
By the way,can you answer another one:is it nessesary for tracking process that green & blue leds shining all the time(i mean,if i close their light by black paper for axample -
will not bring this to deterioration of tracking?)
Re: I want to know
Nope, the green light indicates that it is working, and tracking an object, and the blue light generally indicates when it is in "enhanced" mode.
Re: I want to know
And last series:when i start my PC blue led is blinking,are infrared leds working too?or they start work only when i load profile?And do they stop radiate infrared waves when i exit from trackir software or continue their work until i turn off computer?
Re: I want to know
The IR LEDs are not active until the TrackIR software is running.
The blinking indicates that it is plugged into the USB port, but the software isn't running. Sort of a standby indicator.
The blinking indicates that it is plugged into the USB port, but the software isn't running. Sort of a standby indicator.
Re: I want to know
Thanks!That was all i want to know
Re: I want to know
Let us know if you have anymore questions, we will be glad to help out.