where abouts is the triplet lens mounted? is it the focal length from the collimator fresnel lens or the focal length from LCD to the Triplet Lens??
Also the size of the triplet lens (in diameter) and magnification, what difference will it make to the projected image???
Also the size of the triplet lens (in diameter) and magnification, what difference will it make to the projected image???
the triplet specs depend on varios factors, the required image size.. the fov needed... you need first a desired triplet and then look what fresnell suits best for this triplet.
roughly speaking (its well said?) you need a field fresnell with a larger focal than the projection lens. It could be 3 cm larger or 30cm larger depends on various things;
your throw, lcd size, triplet diameter...
mostly, a larger diameter triplet will give you more light and a sharper image. thats because every small part on the triplet will do more specific work than smaller diameter lens. Thats hard to xplain on a diferent language than your mother tounge 😀
roughly speaking (its well said?) you need a field fresnell with a larger focal than the projection lens. It could be 3 cm larger or 30cm larger depends on various things;
your throw, lcd size, triplet diameter...
mostly, a larger diameter triplet will give you more light and a sharper image. thats because every small part on the triplet will do more specific work than smaller diameter lens. Thats hard to xplain on a diferent language than your mother tounge 😀
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