Abstract: A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables a wide angle (e.g., over 90 degrees field of view), high resolution, and a large eye-box with a compact size.

Abstract: A compact light source for a projection display is disclosed enabling eye-glass display using a Fresnel mirror reflecting light without a distance as conventional prism type reflector.

Abstract: A compact integrator of light beams is disclosed using a diffractive optical element to integrate multiple beams into a single beam regardless of wavelength or polarization.

Abstract: A see-through image display system having a DOE often has undesirable light or so called ghost images due to the quantization of saw tooth shape of DOE surface. This invention provides ways to eliminate ghost images.

Abstract: A see-through image display system having a laser-beam-scanner has a very small eyebox when a laser beam is directly projected into eye. This invention provides a solution to increase the size of eyebox using a free-form-mirror to create a real image with high NA without exit-pupil-expander.

Abstract: A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.

Abstract: A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables wide angle (e.g., over 90 degrees FOV), high resolution, and large eye-box with compact size.

Abstract: A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.

Abstract: A see-through image display system having a laser-beam-scanner has a very small eyebox when a laser beam is directly projected into eye. This invention provides a solution to increase the size of eyebox using a free-form-mirror to create a real image with high NA without exit-pupil-expander.

Abstract: A compact light source for a projection display is disclosed enabling eye-glass display using a Fresnel mirror reflecting light without a distance as conventional prism type reflector.

Abstract: A deflector using Fresnel prism for short throw projector is disclosed. For a compact display such as eye-glass type display requiring short throw projection lens can be made substantially shorter and simpler with a transparent Fresnel prism.

Abstract: An eyeglass-type video display device 1A includes a video output unit 12 configured to output video light, a first optical member 13 configured to receive the video light output from the video output unit 12 and emit the video light, and a second optical member 14 configured to receive the video light emitted from the first optical member 13 and project the video light in a direction oblique to the incident plane of the lens 50, wherein the incident plane of the first optical member 13 is arranged to be inclined to the incident plane of the lens 50 so as to suppress the distortion of the video on the incident plane of the lens 50 caused by the video light projected in a direction oblique to the incident plane of the lens 50 from the second optical member 14.

Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces. This display system is suitable for a wearable display.

Abstract: A compact illuminator for a see-through image display system with highly uniform light distribution is disclosed. This invention enables wearable displays such as eye-glass type see-through display. This system provides a wide divergent beam from a display device so that a viewer can have a large eyebox.

Abstract: A compact integrator of light beams is disclosed using a diffractive optical element to integrate multiple beams into a single beam regardless of wavelength or polarization.

Abstract: Manufacturing methods are disclosed to produce a seamless hologram using a free-form-lens enabling arbitrary adjustment of diffraction angle and also a thick hologram made of transparent inorganic materials and heat and UV resistant is disclosed.

Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces.

Abstract: A compact illuminator for a see-through image display system with highly uniform light distribution is disclosed. This invention enables wearable displays such as eye-glass type see-through display. This system provides a wide divergent beam from a display device so that a viewer can have a large eyebox.

Abstract: A see-through image display system having a DOE often has undesirable light or so called ghost images due to the quantization of saw tooth shape of DOE surface. This invention provides ways to eliminate ghost images.

Abstract: It is an object of the present invention to display unnaturalness-free images without showing an observer repetitive images in accordance with the observer's viewpoint. A light beam control element 101b limits a viewing area of images composed of light emitted from a light source array 101a. Here, a terminal position detection sensor 102 or an observer position detection sensor 103 detects a relative positional relationship between the observer's eye observing the image formed by the light emitted from the light source array 101a, and the light source array 101a and the light beam control element 101b. Based on the positional relationship detected by these sensors, a display image control device 104 controls the light source array 101a so as to change display contents of the light forming the image with the viewing area limited by the light beam control element 101b.