Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images.

A stereoscopic light recycling device is provided. A beam splitter is constructed of substantially orthogonally polarizing material on which divergent image light is received and is positioned at an angle to a source of the divergent image light. A phase shifting optic includes a reflective surface coated by a phase shifting film and is positioned at an angle non-perpendicular to at least a portion of the image light from the beam splitter. The angle of the phase shifting optic is dependent on the angle of the beam splitter.

A stereoscopic light recycling device is provided. A beam splitter is constructed of substantially orthogonally polarizing material on which divergent image light is received and is positioned at an angle to a source of the divergent image light. A phase shifting optic includes a reflective surface coated by a phase shifting film and is positioned at an angle non-perpendicular to at least a portion of the image light from the beam splitter. The angle of the phase shifting optic is dependent on the angle of the beam splitter.

A photogrammetry system includes a photogrammetry rig and a plurality of cameras. The photogrammetry rig includes a support frame and a plurality of support arms. The support frame includes a plurality of joint members and a plurality of struts each extending between two of the plurality of joint members to collectively form a spherical polyhedron shape having a center focal point. Each of the plurality of support arms extends through a different one of the plurality of joint members in a direction following a different radial ray from the center focal point. Each of the plurality of support arms is selectively, linearly slidable and securable relative to the different one of the joint members along the different radial ray between a position closest to the center focal point and a different position farthest away from the center focal point. Each camera of the plurality of cameras is secured to an end of a different one of the plurality of support arms nearest the center focal point within the spherical polyhedron shape.

A photogrammetry system includes a photogrammetry rig and a plurality of cameras. The photogrammetry rig includes a support frame and a plurality of support arms. The support frame includes a plurality of joint members and a plurality of struts each extending between two of the plurality of joint members to collectively form a spherical polyhedron shape having a center focal point. Each of the plurality of support arms extends through a different one of the plurality of joint members in a direction following a different radial ray from the center focal point. Each of the plurality of support arms is selectively, linearly slidable and securable relative to the different one of the joint members along the different radial ray between a position closest to the center focal point and a different position farthest away from the center focal point. Each camera of the plurality of cameras is secured to an end of a different one of the plurality of support arms nearest the center focal point within the spherical polyhedron shape.

A projection system and method therefor comprises a first light source configured to emit a first-eye light, wherein the first-eye light includes a first set of wavelengths; a second light source configured to emit a second-eye light, wherein the second-eye light includes a second set of wavelengths; a first projector including first projection optics configured to receive a first input light; and an optical switch configured to be switched between an a first mode and a second mode, wherein the optical switch is configured to, in the first mode, combine the first-eye light and the second-eye light into a combined light and direct the combined light to the first projection optics as the first input light.

Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images.

Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images.

Provided are a thin aerial image display system that can display an aerial image and an input device capable of a touch operation on a video displayed in the air without touch on a screen. The aerial image display system includes a reflective polarizer and a half mirror, in which the half mirror is any one of a concave mirror, a Fresnel mirror, or a retroreflective member of a semi-transmissive and semi-reflective type.

Provided is an image projection apparatus including: one or more light sources; one or more illumination optical systems; a first reflection-type light valve group including three light valves and being configured to modulate incident light based on first image information; a second reflection-type light valve group including three light valves and being configured to modulate incident light based on second image information; a first prism-type photosynthesizing member having a function of synthesizing, on one optical axis, light that is reflected by the first reflection-type light valve group; a second prism-type photosynthesizing member having a function of synthesizing, on one optical axis, light that is reflected by the second reflection-type light valve group; and a prism-type beam splitter configured to synthesize, on one optical axis, light that has been reflected by the first reflection-type light valve group and light that has been reflected by the second reflection-type light valve group.