Abstract: An exemplary embodiment of the invention relates to an on-axis or near on-axis optical head mounted projection display optical assembly for transmitting and magnifying a real image to an eye. The assembly comprises a miniature display, a projection lens for receiving the light rays from the display, a second lens positioned to receive the light from the projection lens, a beam splitter positioned for receiving and splitting the light rays from the second lens, a retro-reflective screen positioned for receiving the reflected portion of the split light rays from the beam splitter, and then reflecting the portion of split light rays wherein the portion of split light rays passes through the beam splitter. A third lens is positioned to receive the portion of split light rays from the retro-reflective screen and through the beam splitter.

Abstract: An exemplary embodiment of the invention relates to an on-axis or near on-axis optical head mounted projection display optical assembly for transmitting and magnifying a real image to an eye. The assembly comprises a miniature display, a projection lens for receiving the light rays from the display, a second lens positioned to receive the light from the projection lens, a beam splitter positioned for receiving and splitting the light rays from the second lens, a retro-reflective screen positioned for receiving the reflected portion of the split light rays from the beam splitter, and then reflecting the portion of split light rays wherein the portion of split light rays passes through the beam splitter. A third lens is positioned to receive the portion of split light rays from the retro-reflective screen and through the beam splitter.

Abstract: Extremely compact and light-weight optical systems, apparatus, devices and methods to image miniature displays. Such systems include, for example, head-mounted projection displays (HMPD), head-mounted displays (HMDs), and cameras for special effects, compact microscopes and telescopes as well as applications in which magnification and compactness are design criteria. The invention includes an ultra-compact imaging system based on microlenslet arrays and demonstrates that such a system can achieve an object-to-image distance as low as approximately 1.7 mm. with the usage of commercially available microlenslet arrays. The replacement of bulk macro-optical system by multi-aperture micro-optics is achieved.

Abstract: This invention has incorporated projective optics and phase conjugate material thus eliminating the requisite use of an external phase conjugate material to provide a see-through head mounted projective display. A key component of the invention is the use of optical imaging technology in combination with projective optics to make this revolutionary technology work. In previous head mounted projective displays the phase conjugate material had to be placed in the environment to display images, but in this invention one is not limited to the use of an external phase conjugate material but further extends its use to outdoor see-through augmented reality to produce images using the see-through head mounted projective display system. Furthermore, this invention extends the use of projective head mounted displays to clinical guided surgery, surgery medical, an outdoor augmented see-through virtual environment for military training and wearable computers.

Abstract: This invention has incorporated projective optics and phase conjugate material thus eliminating the requisite use of an external phase conjugate material to provide a see-through head mounted projective display. A key component of the invention is the use of optical imaging technology in combination with projective optics to make this revolutionary technology work. In previous head mounted projective displays the phase conjugate material had to be placed in the environment to display images, but in this invention one is not limited to the use of an external phase conjugate material but further extends its use to outdoor see-through augmented reality to produce images using the see-through head mounted projective display system. Furthermore, this invention extends the use of projective head mounted displays to clinical guided surgery, surgery medical, an outdoor augmented see-through virtual environment for military training and wearable computers.