An image projection device that can effectively curb an increase in temperature of an image projecting unit due to external light while maintaining quality of a projected image is provided. The image projection device includes an image projecting unit configured to emit projection light including an image, a first freeform curved mirror reflecting the projection light incident from the image projecting unit, an intermediate mirror reflecting the projection light incident from the first freeform curved mirror, and a second freeform curved mirror reflecting the projection light incident from the intermediate mirror and causing the projection light to reach a viewpoint. A component in at least one imaging axis direction of the projection light reflected by the first freeform curved mirror forms an image at an intermediate imaging position before the projection light reaches the second freeform curved mirror, and the intermediate mirror is arranged at the intermediate imaging position.

An image projection device that can effectively use a space to achieve space saving even when projection light from an image projecting unit is reflected by a plurality of freeform curved mirrors to reach a viewpoint is provided. The image projection device includes: an image projecting unit emitting projection light including an image; a first freeform curved mirror reflecting the projection light incident from the image projecting unit; and a second freeform curved mirror reflecting the projection light incident from the first freeform curved mirror and causing the projection light to reach a viewpoint. Only one of an x-axis component and a y-axis component of the projection light reflected by the first freeform curved mirror forms an image between the first freeform curved mirror and the second freeform curved mirror.

An imaging optical mechanism includes a first concave mirror and a second concave mirror at a position shifted from the first concave mirror in a sub-scanning direction. A plurality of aperture members in which slits are formed is disposed between the first concave mirror and the second concave mirror. The first concave mirror reflects light incident from an original document so as not to be imaged at a position between the first concave mirror and the second concave mirror in the sub-scanning direction, and reflects light incident from the original document so as to be imaged at the position between the first concave mirror and the second concave mirror in a main scanning direction. The second concave mirror reflects light which is reflected by the first concave mirror and incident thereto, so as to be imaged at a position of a sensor.

An apparatus includes an in-line reflective optical system configured to receive an input optical beam and provide an output optical beam. The in-line reflective optical system includes first and second powered mirrors aligned back-to-back. The first powered mirror is configured to reflect the input optical beam as a first intermediate beam. The in-line reflective optical system also includes first and second reflective surfaces respectively configured to reflect the first intermediate beam as a second intermediate beam and to reflect the second intermediate beam as a third intermediate beam. The second powered mirror is configured to reflect the third intermediate beam as the output optical beam. A spacing between the first and second reflective surfaces and the first and second powered mirrors is adjustable to control a focus of the output optical beam without introducing boresight error in the output optical beam.

The invention relates to a virtual display device including a fixed base, a reflective module and a magnification module, the feature is that the fixed base is connected to a back cover by a second shaft group of the magnification module to form a box body, the fixed base is used to store a reflector and a bracket for facilitate storage, the virtual display device is provided to enlarge images after being opened.

A head-up display device reflects a display light on a projection member to display a virtual image. A light condensing unit causes condensation and collimates an illumination light from a light source unit. A liquid crystal element includes forms an image illuminated with the illumination light. The liquid crystal element emits the display light of the image in a light flux form in an emission direction corresponding to an incident direction of the illumination light. A positive optical element has a positive refractive power. A negative optical element has a negative refractive power. Both of the optical elements are located on the optical path and guide the display light from the liquid crystal element toward the projection member to enlarge a virtual image. The negative optical element on the optical path is located closer to the liquid crystal element than the positive optical element.

A head-up display system of the present disclosure includes a display device that displays an image and a projection optical system that projects on the display member the image displayed on the display device. The projection optical system includes mirror M.sub.L that reflects a light beam toward the display member and mirror M.sub.L1 that reflects the light beam toward mirror M.sub.L. Then, the projection optical system satisfies following condition (1):

0.01<|M.sub.LD/M.sub.LW||M.sub.L1Z/M.sub.L1W|(1) where M.sub.LD is depth of mirror M.sub.L M.sub.LW is lateral dimension of mirror M.sub.L M.sub.L1Z is maximum sag amount of mirror M.sub.L1 M.sub.L1W is lateral dimension of mirror M.sub.L1.

Such a configuration provides a head-up display system small in size that makes image distortion small in an entire viewpoint area of an observer.

A cloaking device includes an object-side, an image-side, an object-side curved cloaking region (CR) boundary having an outward facing mirror surface and an inward facing surface, and an image-side curved CR boundary an outward facing mirror surface and an inward facing surface. A cloaked region is bounded by the inward facing surfaces of the object-side curved CR boundary and the image-side curved CR boundary. At least one exterior boundary with an inward facing mirror surface is spaced apart from the object-side curved CR boundary and the image-side curved CR boundary. Light from an object positioned on the object-side of the cloaking device and obscured by the cloaked region is redirected around the cloaked region to form an image of the object on the image-side of the cloaking device such that the light from the object appears to pass through the CR.

The present disclosure provides a display module, including a display panel and a bezel. The display panel includes a central display region, a peripheral display region, a bezel region, a first optical member at least partially arranged above the peripheral display region, and a second optical member at least partially arranged above the bezel region. A part of rays emitted from the peripheral display region is reflected by the first optical member toward the second optical member, and emits upward from the bezel region after being reflected again by the second optical member.

The following invention relates to an optical device for use in a system that requires optical zoom or focus abilities, particularly for providing pre-set zoom parameters with a very low energy requirement. There is provided an optical magnification device comprising at least one pair of optically aligned deformable reflectors, wherein each reflector pair has at least two configurations, wherein selection of a first and a second configuration of said deformable reflector pairs provides pre-defined magnification states, such that in any configuration one reflector is substantially concave and the other is substantially convex; at least one controller may cause both the reflectors to move between said at least two configurations.