A highly reflective mirror for use in the wavelength range of 0.300 m to 15 m includes a substrate, a first interface layer, a reflective layer, a second interface layer, a plurality of tuning layers including a combination of a low index material and a high index material wherein the high index material is HfO.sub.2, and a protective layer. The highly reflective mirror has a reflectivity of at least 90% over the wavelength range of 335 nm to 1000 nm at an angle of incidence (AOI) of 45.

A mirror reflective element assembly for a vehicle includes an electrically variable reflectance mirror reflective element that includes front and rear substrates with an electrochromic medium disposed therebetween and bounded by a perimeter seal. A perimeter layer is disposed at a second surface of the front substrate proximate a perimeter edge of the front substrate that conceals the perimeter seal from view by a driver of a vehicle. No part of the rear substrate extends beyond any part of the front substrate. At least a portion of the mirror reflector disposed at at least a portion of the third surface of the rear substrate extends from under the perimeter seal outward towards at least a portion of the perimeter edge of the rear substrate. The mirror reflector includes a stack of thin films that includes at least a first metal thin film and a second metal thin film.

An illumination system for an optical arrangement such as an EUV lithography apparatus, having: at least one optical element which has at least one optical surface, on which a coating which reflects illumination radiation is applied, and an actuator device aligning the optical surface in at least two angular positions in the radiation path. The coating either has a thickness (d.sub.OPT1) at which a mean value ((R.sub.1+R.sub.2)) formed from a thickness-dependent reflectivity (R.sub.1, R.sub.2) of the coating at the at least two angular positions is maximized or has a thickness (d.sub.OPT2) at which a maximum change (max(R.sub.1/R.sub.1, R.sub.2/R.sub.2)) in the reflectivity (R.sub.1, R.sub.2) caused by a thickness tolerance of the coating is minimized at the respective angular positions or else the reflecting coating has a thickness (d.sub.O2) at which the reflectivity (R.sub.1, R.sub.2) of the coating has the same magnitude in the at least two angular positions.

An optical layer system for a position-measuring device includes at least first, second and third functional surfaces disposed on a surface of a transparent substrate. Each of the functional surfaces have a different optical function. The functional surfaces are composed of a first layer stack and a second layer stack.

A radio frequency identification (RFID) enabled mirror includes a mirror comprising a reflective layer. The reflective layer comprises at least one layer of a metallic material. At least one portion of the reflective layer is removed to form a booster antenna from a remaining portion of the reflective layer. A dielectric coating is applied to the mirror where the reflective layer was removed. The RFID-enabled mirror further includes an RFID chip coupled to the booster antenna.

A projection assembly for a head-up display (HUD) includes a windshield, including an outer and inner pane joined to one another via a thermoplastic intermediate layer, and having an HUD region; and a projector directed at the HUD region. The radiation of the projector is predominantly p-polarised, and the windshield is provided with a reflective coating, which is suitable for reflecting p-polarised radiation. The reflective coating has exactly one electrically conductive layer and arranged one above and one below the electrically conductive layer are two dielectric layer sequences, each including n low-optical-refraction layers having an index of refraction less than 1.8 and (n+1) high-optical-refraction layers having an index of refraction greater than 1.8, arranged alternatingly in each case, wherein n is an integer greater than or equal to 1.

A radio frequency identification (RFID) enabled mirror includes a mirror comprising a reflective layer. The reflective layer comprises at least one layer of a metallic material. At least one portion of the reflective layer is removed to form a booster antenna from a remaining portion of the reflective layer. A dielectric coating is applied to the mirror where the reflective layer was removed. The RFID-enabled mirror further includes an RFID chip coupled to the booster antenna.

A reflective optical element, in particular for a microlithographic projection exposure apparatus has a substrate (101), a reflection layer system (110) and a defect structure (120) of channel-shaped defects (121) which extend inward from the optical effective surface (100a), or from an interface oriented toward the substrate as far as the reflection layer system, and permit egress of hydrogen from the reflection layer system. The channel-shaped defects (121) increase a diffusion coefficient that is characteristic for the egress of the hydrogen from the reflection layer system (110) by at least 20%, in comparison to a similar layer construction without these channel-shaped defects.

The invention relates to a reflective composite material (V) having a carrier (1) consisting of aluminum, having an interlayer (2) which is present on a side (A) on the carrier (1) and is composed of a varnish, and having an optically active multilayer system (3) which has been applied atop the interlayer (2) and consists of at least three layers, wherein the upper layers (4, 5) are dielectric and/or oxidic layers, and the lowermost layer (6) is a metallic layer which consists of silver and forms a reflection layer (6). To increase the aging resistance, it is proposed that the interlayer (2) comprise an organic layer-forming varnish or be formed entirely from such a varnish that has been cured in an ionic photopolymerization and crosslinking or that has been cured after UV irradiation by free-radical photopolymerization and crosslinking.

Component surfaces are coated with thermally stable layers. In particular infrared mirror surfaces or surfaces of combustion chambers are coated with at least one layer consisting of thermally stable AlCrO in such a manner that the absorption, reflection or transmission of infrared radiations (hereinafter also called thermal radiations) is influenced.