Hello, I'm new to this forum. This place is great. Some people seem to be a little grumpy but that's probably due to having to repeat themselves hundreds of times. I've searched the forums for the question I'm about to ask, nothing came up in my search.
Anyways, I've made several projects using 38kHz IR receivers for outdoor purposes. I've made security systems, remote controls, etc. The one problem of course is decreased range and false hits when in bright sunlight. I've ripped that little light filter out from some of my old VCR's I scavange parts off of, but, I'm running out of old VCR's, and I've got more projects to build. I've searched the web and found some suppliers of materials, ordered some samples and none work as well as the VCR material. I've used some homemade materials such as black trash bag material to better effect than the materials that I ordered. However, nothing works as well as a recessed cavity and a filter ripped out of an old VCR.
Where can I find a material as effective as the VCR filter? I'm looking for ordering material, or using household material that is readily available.
BTW, it's a 940nm 38kHZ IR receiver, so any material must be transparent to 940nm radiation.