Hi, I am looking for some advice regarding infrared filtering. First of all, I'm playing around with various optics, mirrors and motors and eventually plan on building a small personal laser projector. I'm using a disassembled 15mw leadlight clamped to a heatsink it for a longer duty cycle.
Now I'm looking to add a red component. From what I understand in order to appear the same intensity as the green, somewhere between 80 - 100mw at 650 - 660 nm should do ? Being a diode laser (not dpss) from what I understand there should be no IR emmissions so filtration is not necessary. I just wanted to confirm that first.
Now onto my main question. In looking around I was looking at the sik series of laser projectors as a possible source of lasers and optics due to the great price they are offered at. Particularly the Red, green, yellow model which I imagine would include some sort of mixing mirror as well as the servo style scanning assemblies and in this particular case a 40mw green and a 100mw red. All in all sounds like some very useful parts and from what I can figure, purchased separately would cost way more than that.
Here's the problem, from what I have been able to determine from asking the sellers, it is not equipped with IR filters (at least that is what I was told when I asked). Now if I'm correct, the red shouldn't need one, however the green dpss is an accident waiting to happen. What would be entailed in adding an IR filter to their green dpss unit ? Where are they available ?
In searching I found this http://www.rosco.com/us/filters/protect.asp#IR-UV Down at the bottom are the "hot mirrors", which sound like it might be suitable however not directly designed for use with a coherent laser source. Any comments on this ?
After filtration I would imagine the power output would be around 15mw anyhow, so perhaps just replacing it with my modified leadlight would be the cheapest way.
They also sell just a red version which would save a bunch of cash, from which I could yank it apart and incorporate those parts along with my leadlight for a red and green projector. Only thing missing there would be a suitable mixing optic to obtain yellow.
Any advice would be greatly appreciated
Thanks
Miles
EDIT: I just thought of a possible source of IR filters. Perhaps removing one from a webcam ? Or would it likely melt given the intensity of the IR source ?
Now I'm looking to add a red component. From what I understand in order to appear the same intensity as the green, somewhere between 80 - 100mw at 650 - 660 nm should do ? Being a diode laser (not dpss) from what I understand there should be no IR emmissions so filtration is not necessary. I just wanted to confirm that first.
Now onto my main question. In looking around I was looking at the sik series of laser projectors as a possible source of lasers and optics due to the great price they are offered at. Particularly the Red, green, yellow model which I imagine would include some sort of mixing mirror as well as the servo style scanning assemblies and in this particular case a 40mw green and a 100mw red. All in all sounds like some very useful parts and from what I can figure, purchased separately would cost way more than that.
Here's the problem, from what I have been able to determine from asking the sellers, it is not equipped with IR filters (at least that is what I was told when I asked). Now if I'm correct, the red shouldn't need one, however the green dpss is an accident waiting to happen. What would be entailed in adding an IR filter to their green dpss unit ? Where are they available ?
In searching I found this http://www.rosco.com/us/filters/protect.asp#IR-UV Down at the bottom are the "hot mirrors", which sound like it might be suitable however not directly designed for use with a coherent laser source. Any comments on this ?
After filtration I would imagine the power output would be around 15mw anyhow, so perhaps just replacing it with my modified leadlight would be the cheapest way.
They also sell just a red version which would save a bunch of cash, from which I could yank it apart and incorporate those parts along with my leadlight for a red and green projector. Only thing missing there would be a suitable mixing optic to obtain yellow.
Any advice would be greatly appreciated
Thanks
Miles
EDIT: I just thought of a possible source of IR filters. Perhaps removing one from a webcam ? Or would it likely melt given the intensity of the IR source ?
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