The invention relates to a device (1, 2) for pivoting an optical element (10), comprising: an optical element (10), wherein the optical element is movably mounted so that the optical element can be tilted at least about a first axis (A), a magnet (20) extending in an extension direction (Z), wherein the magnet (20) comprises a magnetization (M) aligned with said extension direction (Z), and wherein the magnet (20) comprises a front side (20a), and wherein optical element (10) is rigidly coupled to the magnet (20) or to a first conductor section (30) that faces the front side (20a) of the magnet (20) in the extension direction (Z), wherein the first conductor section (30) extends along the first axis (A), and a current source means (50) electrically connected to the first conductor section (30), which current source means (50) is designed to apply an electrical current (I) to said first conductor section (30), so that a Lorentz force is generated that tilts the optical element (10) about said first axis (A) along a first tilting direction (x).

A diamond-shaped lens system includes: a half diamond-shaped lens including refractive material and having a first surface, a second surface and a third surface for refracting incident light beams from an object having a width of X, from the first surface towards the second surface; a first reflective material positioned at the second surface of the half diamond-shaped lens for reflecting the refracted light beams at a first angle toward the third surface; a second reflective material positioned at the third surface of the half diamond-shaped lens for reflecting the light beams reflected from the first reflective material toward the first surface to exit the first surface at a second angle toward the third surface to form an image of the object with a width Y; and; an apparatus for processing the image of the object to reduce chromatic aberrations.

A diamond-shaped lens system includes: a half diamond-shaped lens including refractive material and having a first surface, a second surface and a third surface for refracting incident light beams from an object having a width of X, from the first surface towards the second surface; a first reflective material positioned at the second surface of the half diamond-shaped lens for reflecting the refracted light beams at a first angle toward the third surface; a second reflective material positioned at the third surface of the half diamond-shaped lens for reflecting the light beams reflected from the first reflective material toward the first surface to exit the first surface at a second angle toward the third surface to form an image of the object with a width Y; and; an apparatus for processing the image of the object to reduce chromatic aberrations.

A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.

The projection screen includes a reflective layer and a light-absorbing layer, where the reflective layer is configured to receive and reflect projection light, and the light-absorbing layer is arranged on the reflective layer; the light-absorbing layer includes a plurality of irregularly arranged light-absorbing members; and the light-absorbing members are configured to absorb at least a part of the projection light, so as to make a brightness of a projected image uniform.

The projection screen includes a reflective layer and a light-absorbing layer, where the reflective layer is configured to receive and reflect projection light, and the light-absorbing layer is arranged on the reflective layer; the light-absorbing layer includes a plurality of irregularly arranged light-absorbing members; and the light-absorbing members are configured to absorb at least a part of the projection light, so as to make a brightness of a projected image uniform.

A diamond-shaped lens system includes: a half diamond-shaped lens including refractive material and having a first surface, a second surface and a third surface for refracting incident light beams from an object having a width of X, from the first surface towards the second surface; a first reflective material positioned at the second surface of the half diamond-shaped lens for reflecting the refracted light beams at a first angle toward the third surface; a second reflective material positioned at the third surface of the half diamond-shaped lens for reflecting the light beams reflected from the first reflective material toward the first surface to exit the first surface at a second angle toward the third surface to form an image of the object with a width Y; and; an apparatus for processing the image of the object to reduce chromatic aberrations.

A diamond-shaped lens system includes: a half diamond-shaped lens including refractive material and having a first surface, a second surface and a third surface for refracting incident light beams from an object having a width of X, from the first surface towards the second surface; a first reflective material positioned at the second surface of the half diamond-shaped lens for reflecting the refracted light beams at a first angle toward the third surface; a second reflective material positioned at the third surface of the half diamond-shaped lens for reflecting the light beams reflected from the first reflective material toward the first surface to exit the first surface at a second angle toward the third surface to form an image of the object with a width Y; and; an apparatus for processing the image of the object to reduce chromatic aberrations.

A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.

A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.