Recent content by rotor_hed80

Hi thanks for your help I do believe there were a few details missing from the diagram like you sugested a reflector for the light source and also I now understand the confusion of part four I appologise it was a stripped lcd. I have another triplet lens but it is only 60mm in diameter...

The basics are take a bright light (6500k colour temp) and a stripped down lcd, two Fresnel lens and one triplet. Arrange in order as shown in attached picture. 1. Light Source 2. Heat protection 3a,b. Fresnel Lens 4. Stripped Lens 5. Triplet lens Please refer to lumenlabDOTcom and go...

Hi Here are some pics of the lens that I have and the machine that it came out of. The model number of the lens is a TKG139964, The projector is a panasonic PT-102n. The reason I think I knew the focal length was because i put a single light source behind the lens and it projected an light...

Hi all Not sure if I posted in the right spot but my question is in regards to optics and projection. To make a little less confusing I will try to explain my dilemma. I have a triplet lens out of an old crt projector where the rear focal point is about 10mm form the rear lens surface. So...