Optics: image projectors – Housing
Patent
1990-02-20
1990-12-18
Haroian, Harry N.
Optics: image projectors
Housing
353 99, 353 78, 358254, G01B 2128
Patent
active
049782177
ABSTRACT:
An apparatus and method for projecting optical images from electronic devices with luminous screens such as television receivers or computer terminal displays includes an image inversion means and a reflective projection means. The image inversion means comprises an assembly of two normally intersecting plane mirrors disposed close by the luminous screen. Object images from the luminous screen enter into one of the mirrors of the image inversion means as an upright and nonreversed image and are reflected by the other plane mirror out of the image inversion means as an inverted and nonreversed image. The reflective projection means comprises a parabolic concave mirror, positioned close by the image inversion means, and which captures the inverted and nonreversed image and projects it into a remote viewing screen as an enlarged, upright and nonreversed real image. The apparatus and method is designed to be adaptable to luminous screens of various sizes and capable of projecting high quality images without resorting to any alterations of electronics or complicated optics.
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