An inflatable light box includes decorative securing plates and plastic panels in association with upper and lower interior connecting planks when coupled to a cylindrical barrel in which an inflatable airbag is disposed, and encompassed by a decorative cover, form a housing for an inflatable light apparatus.

[Problem] To provide a head-up display excellent in visibility. A light transmitting sheet 60 has an emission window portion 63 that has a pair of left and right sides 63.sub.L and 63.sub.R and a pair of front and rear sides 63.sub.Fr and 63.sub.Re, and is a region from which the display light is emitted, a light shielding frame portion 64 that is at least partially fixed to a case 52 and is an opaque region, and a check window portion 65 formed along the pair of left and right sides 63.sub.L and 63.sub.R and the pair of front and rear sides 63.sub.Fr and 63.sub.Re within the light shielding frame portion 64 and allowing visual recognition of presence or absence of the adhesive disposed between the case 52 and the light transmitting sheet 60. A check window 65.sub.L and 65.sub.R along the pair of left and right sides 63.sub.L and 63.sub.R or a check window 65.sub.Fr and 65.sub.Re along the pair of front and rear sides 63.sub.Fr and 63.sub.Re is such that the check window along one side has a smaller area than the check window along the other side of the pair.

An image projection device includes: one light source unit emitting an image light beam, which forms an image, of visible light and a checking light beam of visible light; an optical system projecting the image light beam emitted from the one light source unit onto a first surface region of an eye of a user to project the image light beam onto a retina of the user, and projecting the checking light beam emitted from the one light source unit onto a second surface region, which is distant from the first surface region, of the eye of the user; a light detector detecting a reflected light that is the checking light beam reflected by the eye of the user; and a controller controlling at least one of the one light source unit and the optical system based on a detection result of the reflected light by the light detector.

A vehicle display device includes an indicator that luminously displays a display image on its screen by lighting and stops the luminous display of the display image by extinction, and a display panel that includes a light shielding part on a rear surface of the display panel. The light shielding part light-shields a surrounding part of a transmitting window, through which an image light of the display image is transmitted to be capable of being visually recognized from a front side. A transmission region of a front surface of the display panel that is located at least on the front side of the transmitting window is occupied by a planar part that is formed in a flat surface shape along the screen, and a plurality of projecting surface parts that project from the planar part into a curved projecting surface shape. An area occupancy of the planar part at the transmission region is adjusted to be equal to or larger than an area occupancy of all the plurality of projecting surface parts at the transmission region.

A storage phosphor plate assembly includes at least one storage phosphor plate having a storage phosphor layer for storing X-ray information and a substrate layer on which the storage phosphor layer is provided. The substrate layer contains a permanent magnetic material, and a support plate contains a magnetic material, the at least one storage phosphor plate being held on the support plate due to magnetic forces. The invention further relates to an X ray cassette and a system for reading out storage phosphor plate. An easy and safe handling of storage phosphor plates of various sizes and/or forms, in particular during the read-out process in the read-out system, is achieved.

A wheel alignment system for a three-wheeled vehicle comprises a reflecting assembly and a first laser emitting assembly. The reflecting assembly includes a first mirror having a first reflective surface arranged in a first mirror plane that is perpendicular to a rear wheel vertical plane, which is defined centrally through a rear wheel along a direction of travel of the vehicle. The first laser emitting assembly includes a first laser emitter configured to emit a first laser light at the reflective surface along a laser line parallel to a first front wheel vertical plane, which is defined centrally through a first front wheel, and first indicia corresponding to a toe angle of the first front wheel. The first the mirror reflects the first laser light toward the first indicia.

A wheel alignment system for a three-wheeled vehicle comprises a reflecting assembly and a first laser emitting assembly. The reflecting assembly includes a first mirror having a first reflective surface arranged in a first mirror plane that is perpendicular to a rear wheel vertical plane, which is defined centrally through a rear wheel along a direction of travel of the vehicle. The first laser emitting assembly includes a first laser emitter configured to emit a first laser light at the reflective surface along a laser line parallel to a first front wheel vertical plane, which is defined centrally through a first front wheel, and first indicia corresponding to a toe angle of the first front wheel. The first the mirror reflects the first laser light toward the first indicia.

A storage phosphor plate assembly includes at least one storage phosphor plate having a storage phosphor layer for storing X-ray information and a substrate layer on which the storage phosphor layer is provided. The substrate layer contains a permanent magnetic material, and a support plate contains a magnetic material, the at least one storage phosphor plate being held on the support plate due to magnetic forces. The invention further relates to an X ray cassette and a system for reading out storage phosphor plate. An easy and safe handling of storage phosphor plates of various sizes and/or forms, in particular during the read-out process in the read-out system, is achieved.

The invention provides an optical device for displaying one or more images on a picture tube so as to be viewable from the anterior end of the device. The optical device can be used to display abstract or non-abstract subject matter. The optical device includes a picture tube having one or more images to be displayed by the device and an imaging assembly housed in a cavity formed by lateral sides of the picture tube, the imaging assembly having a reflecting surface that reflects the one or more images on the picture tube so as to be viewable from the anterior end of the device.

An augmented reality display device includes a light source, a waveguide module and a solar charging layer. The light source has a light-emitting area. The waveguide module is located on the light-emitting area of the light source and includes a first glass layer, a waveguide element, an electrochrome layer and a second glass layer. The first glass layer is located on the light-emitting area of the light source. The electrochrome layer is located on a surface of the waveguide element facing away the first glass layer. The second glass layer is located a surface of the electrochrome layer facing away the waveguide element. The solar charging layer is located on a surface of the second glass layer facing away the electrochrome layer, in which the solar charging layer electrically connects the light source and is configured to charge the light source.