Abstract: An optical beam shaping unit for shaping a beam bundle. The optical beam shaping unit has at least one ball lens for shaping the beam bundle, wherein the ball lens allows a large portion of the light incident on the ball lens to pass through, and wherein the optical beam shaping unit has at least one optical unit which has a positive effective focal length and which is arranged in a beam path with the ball lens.

Abstract: The invention relates to an athermalized device for generating laser radiation that is focused in a focal point, comprising a lens and a plastic housing and a passive adjustment system for adjusting the object distance S1. The passive adjustment device has an effective coefficient of thermal expansion (I) ? V = s 1 f · [ ? L - 1 n - 1 · ( ? n ? ? · d ? ? ? dT + ? n ? T ) ] + ? 2 · ( 1 - s 1 f ) .

Abstract: An apparatus (112) for focus adjustment for a device (100) for laser material processing, which has a movably arranged first lens unit (124), which comprises a first lens (108), and a movably arranged second lens unit (126), which comprises a second lens (110), has an adjustment device (114) which is designed to move the first lens unit (124) in a first direction (116) and to move the second lens unit (126) in a second direction (118) opposite to the first direction (116) in order to adjust a distance between the first lens (108) and the second lens (110) for the focus adjustment.

Abstract: The invention relates to EPI lighting which allows transmitted light-bright field- or transmitted light-dark field-imaging or phase contrast imaging of a microscopic sample. For this purpose, a flat reflector is used which is located opposite the observer side and which brings about a deflection of the illumination beam of light. The flat reflector has a plane normal and an effective perpendicular which differs from the plane normal, or it is in the form of a retroreflector.

Abstract: An adjustable mirror assembly comprising a mirror, a support, a leaf spring element biased between the support and a planar reverse side of the mirror, said leaf spring element generating a spring force, as well as at least two adjusting units mounted in the support and acting on the mirror in opposition to the spring force. The leaf spring element is mounted to the reverse side of the mirror via at least one mirror mounting point by a substance-to-substance bond and to the support via at least one support mounting point. The spring force is directed toward the support.

Abstract: The invention relates to a laser assembly (1) comprising a diode laser bar (2), a heat sink (4) and at least one cover (7). The laser bar is located between the heat sink and the cover. The heat sink and/or the cover is/are coated with nanowires (16) or nanotubes via which the contact between the laser bar and the heat sink and/or the cover is established.

Abstract: A device for variably influencing the wavefront of a beam, said device comprising a reflecting or transmitting planar optical element (1) and an actuating and holding means (2) which is connected to the planar optical element (1) via at least three elastic retaining lugs (2.3) such that forces can be introduced into at least one of the retaining lugs (2.3) via at least one actuating element (2.4) arranged in the actuating and holding means (2), which forces are deflected in their direction of action by the bending of the retaining lugs (2.3) such that they cause forces on the peripheral surface (1.3) of the planar optical element (1) whose direction of action (RA) is parallel to the axis of symmetry (A) of the planar optical element (1), allowing the planar optical element (1) to be actively deformed.

Abstract: The invention relates to the production of an optical or optoelectronic assembly (1, 2) comprising an active component (5) and a cooler (3). The cooler (3) is produced by means of a 3D printing method on a composite plate (6).

Abstract: The invention relates to a device (102) for optical beam expansion of an optical system having a guide tube (220), a first guide cylinder (222) having a first lens (226), wherein the first guide cylinder (202) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220), and a second guide cylinder (224) having a second lens (228), wherein the second guide cylinder (224) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220). A first displacement device is provided to displace the first guide cylinder (222) along the longitudinal axis (340) of the guide tube (220), and a second displacement device is provided to displace the second guide cylinder (224) along the longitudinal axis of the guide tube (220).

Abstract: The invention relates to a device with a planar mirror (1), comprising a first axis of symmetry (A), and an actuating and holding means (10) with a frame (2), said frame (2) being firmly connected to the peripheral surface (1.3) of the planar mirror (1) and centrally contacting the rear surface (1.2) of the planar mirror (1). There is a socket (3), which is linearly adjustable along the axis of symmetry (A) in the frame (2) and is firmly connected, via a membrane spring (8), to the frame (2), on the one hand, and to a crown-like adjusting element (5), on the other hand. The crown-like adjusting element (5) has crown spikes which act on retaining lugs (6) connected to the planar mirror (1) and deform them, thereby applying forces corresponding to said deformation into the planar mirror (1) in order to deform the latter.

Abstract: A diode laser comprising a plurality of laser bars. The laser bars are constructed as a laser stack with heat conducting bodies arranged between the bars. The laser bars are arranged in an interior of a housing. The housing is formed from a frame fitted on the multilayer substrate and a window. The empty volume is less than half of the total volume of the interior.

Abstract: The approach presented here provides a membrane unit (105) comprising micro-optical structures (115), which comprises a wafer (110) as carrier basis of the micro-optical structures (115), an intermediate substrate (300) connected to the wafer (110), and a carrier (130) connected to the intermediate substrate (300), wherein the coefficients of thermal expansion of the wafer (100), of the intermediate substrate (300) and of the carrier (130) are dimensioned such that a coefficient of expansion of the carrier (130) is greater than a coefficient of expansion of the intermediate substrate (300) and the coefficient of expansion of the intermediate substrate (300) is greater than or equal to a coefficient of expansion of the wafer (110).

Abstract: The invention relates to a transparent auxiliary ring for the adjustment, for the long-term stable operation and for protection of fiber-coupled laser arrangements.

Abstract: Method and device for severing a microchip from a wafer and arranging the microchip on a substrate, wherein the microchip is contact-bonded to the free end of a tip during severing and accordingly adheres to the tip through adhesive force while the substrate is transported. A coordinate measuring machine can advantageously be used as device.

Abstract: An adjustable mirror assembly comprising a mirror, a support, a leaf spring element biased between the support and a planar reverse side of the mirror, said leaf spring element generating a spring force, as well as at least two adjusting units mounted in the support and acting on the mirror in opposition to the spring force. The leaf spring element is mounted to the reverse side of the mirror via at least one mirror mounting point by a substance-to-substance bond and to the support via at least one support mounting point. The spring force is directed toward the support.

Abstract: A method for production of window elements which can be soldered into a housing in a hermetically tight manner with optical coating and free-form window elements are disclosed. After application of optical coatings, a protective layer is applied to the optical coating, the two layer systems are selectively removed by means of a machining beam of high-energy radiation for the purpose of ablation of a desired optically active free-form surface for window elements with any geometric shape through a localized machining beam in edge regions of the optically active free-form surface such that the protective layer remains on the optical coating as lift-off mask which is lifted off after applying a metallization for a solder layer by an etching process that acts selectively only on the protective layer but not on the optical coating, and the metallization remains only on the peripheral edge regions circumscribing the free-form surfaces.

Abstract: The invention relates to a device (102) for optical beam expansion of an optical system having a guide tube (220), a first guide cylinder (222) having a first lens (226), wherein the first guide cylinder (202) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220), and a second guide cylinder (224) having a second lens (228), wherein the second guide cylinder (224) is arranged within the guide tube (220) so as to be displaceable along the longitudinal axis of the guide tube (220). A first displacement device is provided to displace the first guide cylinder (222) along the longitudinal axis (340) of the guide tube (220), and a second displacement device is provided to displace the second guide cylinder (224) along the longitudinal axis of the guide tube (220).

Abstract: Method and device for severing a microchip from a wafer and arranging the microchip on a substrate, wherein the microchip is contact-bonded to the free end of a tip during severing and accordingly adheres to the tip through adhesive force while the substrate is transported. A coordinate measuring machine can advantageously be used as device.

Abstract: A stiffened lens mount with an outer mount ring having an axis of symmetry, an inner mount ring arranged coaxial to the outer mount ring and connection structures. The inner mount ring has at least one end face arranged perpendicular to the axis of symmetry, and a coaxially arranged stiffening ring fixedly connected to the inner mount ring via the at least one end face along an imaginary circle.