Dichroic filter

       A dichroic filter, is usually a very thin filter.  This dichroic filter is a color filter that can be used to pass light of a very small range of colors while reflecting other colors.  Dichroic mirrors and dichroic reflectors most of the time are represented by the colors of light that they reflect, rather than by the colors that they pass.

     Sometimes used behind a light source, dichroic reflectors are most of the time reflecting light forward.  While this is happening the invisible infrared light or radiated heat,   is allowed to pass out of the rear of the object firmly fixed in place.  This will result in a beam of light that is cooler.  An example, would be a halogen bulb.  This halogen bulb has an integrated dichroic reflector.  These bulbs were originally constructed according to plan for use in slide projectors to avoid melting the slides.  A TV Projector 's lamp may be used with these dichroic filters.

        However, today these halogen bulbs are used for a large degree for the inside of the home and they are also used for commercial lighting, too.  If you are a  homeowner, then you are better off going with an MR16 bulb fixture, which has dichroic reflectors that eliminate harmful UV and infrared radiation.     Highly complicated or developed  fixtures such as the MR16 light source use dichroic reflectors that send the heat out of the back of the lamp.

    Dichroic filters use the fundamental truth or proposition that serves as the foundation for a system of belief or behavior that  a thin film can and will  produce colors in the same way as  oil  films on water.  If the light strikes an oil film at an certain angle, some of the light is then reflected from the top surface of the oil, and some is reflected from the bottom surface where it is in contact with the water.  When the light is reflecting from the bottom, it travels a slightly longer path, and some of the light wavelengths are reinforced by this delay, while others tend to be canceled out,  producing the colors seen.  Try out one today, and experience the lightning effects of colors on your own Wall Projector.