摘要:
The imaging apparatus comprises a retractable structure with active and inactive positions. An outermost lens group and a lens group actuator are movable along an optical axis. In the inactive position the lens group and the lens group actuator reside close to an image sensor. The lens group actuator is positioned to the same level as the image sensor. In the active position the outermost lens group and the lens group actuator are further from the image sensor along the optical axis. The retractable structure may protrude from the device, covering the imaging apparatus. In one example the structure is reversed, the image sensor protrudes from the device while the outermost lens group is fixed to the device body.
摘要:
A lens and light assembly for photographing diamonds and jewelry. The lens and light assembly comprising a housing; a first lens; a second lens; a lighting source; a light filter; and a clip. The lighting source, the first lens, and the second lens are connected to a microcontroller. The microcontroller is configured to receive commands from a mobile device that in turn controls the lighting source, the first lens, and the second lens.
摘要:
A conventional head-mounted display (HMDs) can display a virtual image at a fixed focus (e.g., infinite focus). If the user looks at an object that appears closer than the virtual image, then accommodation by the user's eyes will cause the virtual image to appear blurry. The HMDs disclosed herein include a dynamic electro-active focusing element that changes the focus of the virtual image to account for accommodation by the user. This dynamic electro-active focusing element may include a curved layer of electro-active material, such as nematic or bi-stable (e.g., cholesteric) liquid crystal, disposed between a static concave mirror and a convex surface on a beam splitter or other optical element. Changing the refractive index of the electro-active material causes the focus of the dynamic electro-active focusing element, making it possible to shift the virtual image's focus in as the user's eyes change focus.
摘要:
Die Erfindung betrifft ein Verfahren zum Untersuchen einer Probe mittels Lichtblatt- Mikroskopie, wobei eine in einer Beleuchtungsebene befindliche Probenfläche mittels eines sich in der Beleuchtungsebene ausbreitenden Lichtblattes beleuchtet und von der Beleuchtungsebene ausgehendes Detektionslicht detektiert wird.Das Verfahren zeichnet sich dadurch aus, dass eine Position eines Lichtblattfokus des Lichtblattes in der Beleuchtungsebene (26) durch Verändern der optischen Länge des Lichtweges des das Lichtblatt bildenden Beleuchtungslichtes bewegt wird.
摘要:
An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved optical systems supporting beam combining, beam steering, and both patterned and unpatterned beam recycling and re-use are described.