Disclosed is an optical module including an optical transmitter which is configured to output a first optical signal, an optical receiver which is configured to receive a second optical signal, a holder which is configured to include an optical fiber on which the first optical signal is incident and from which the second optical signal is emitted. The optical module further includes a first optical filter disposed between the optical transmitter and the holder to transmit the first optical signal and reflect the second optical signal, a first parallel light lens disposed between the first optical filter and the optical transmitter, and a second parallel light lens disposed between the first optical filter and the holder.

An improved LCD backlighting unit (“BLU”) particularly a BLU which uses light emitting diode (“LED”) light sources especially white LED light sources, enhances a liquid crystal display's (“LCD's”) readability in sunlight. The improved BLU briefly increases a display screen's brightness, typically 2-6× greater than a BLU's maximum continuous operating brightness. The BLU and its associated LED driver provide substantially increased brightness for a predefined and relatively short interval, typically 2 to 60 seconds, without damage. The LED driver control prevents boosting the display brightness too frequently or for too long thereby avoiding system damage by adequately dissipating the increased power. The BLU may include a thermal sensor on or near the LEDs to provide real time temperature feedback to the LED driver control. Temporarily boosting the BLU's brightness helps any outdoor daylight application such as commercial drones where the sun can easily wash out a display an the drone's controller.

An elongated hollow optical waveguide (1) is described, as can be used in particular in a photobioreactor for supplying phototrophic organisms both with light and with nutrients. The optical waveguide (1) has a casing (3) made from transparent plastic, which surrounds a hollow core (5). The hollow core has a diameter of at least 1 mm, preferably at least 3 mm or at least 1 cm. A plurality of openings (7) with a diameter of at least 0.5 mm, preferably at least 1 mm, is constructed in the casing (3). Light can propagate through the transparent casing and preferably exit laterally (19) along the entire optical waveguide (1). Nutrients (15) can be conveyed through the hollow core (5) into the interior of the photobioreactor. Conversely, portions of the solution, to which organisms have been added, can also be sucked through the hollow core (5), for example in order to analyze the same.

A backlight device includes a light guide plate including a first incident surface, and one or more second incident surfaces that are connected to the first incident surface and inclined with respect to the first incident surface in a top plan view; at least one green illuminant arranged to face one of (i) the first incident surface and (ii) the one or more second incident surfaces; and at least one red illuminant arranged to face the other of (i) the first incident surface and (ii) the one or more second incident surfaces. At least one of (i) the green light emitted from the green illuminant, and (ii) the red light emitted from the red illuminant, contains a blue component whose emission peak wavelength is 420 nm to 500 nm.

Aspects and techniques of the present disclosure relate to a telecommunications optical fiber management tray that provides enhanced access to connectors and adapters. In one example, a fiber optic telecommunications tray is disclosed which has movable components that can configure the tray between a storage position and an access position. In the storage position, one or more fiber optic connectors and a fiber containment wall extending from a base of the tray are positioned such that a port of a connector mounted to the tray has a longitudinal axis that passes through the fiber containment wall. In the access position, the one or more fiber optic connectors and the fiber containment wall are position such that the connector port longitudinal axis does not pass through the fiber containment wall. In the access position, adapters can be inserted or removed from the tray-mounted connectors without a line-of-sight obstruction from the fiber containment wall.

The present utility model relates to the field of a QSFP+ module hot-pluggable unlocking structure. The hot-pluggable unlocking structure includes a housing formed of an upper cover and a lower cover buckled to each other, and a locking component provided on the housing, where guiding grooves are provided on two sides of the housing, two unlocking pieces are provided at one end of the locking component and a pull tab is provided at the other end, the unlocking pieces are engaged with and provided in the guiding grooves, a spring is provided on the upper cover, spring-catch elements are provided on the locking component and protrude towards the upper cover, and the spring-catch elements and the spring are pressed against each other. The structure simplifies the pull tab unlocking structure and manufacturing process thereof and helps reduce costs.

A method is described for fabricating an optical device that includes a light waves-transmitting substrate having at least two major surfaces and edges and a plurality of partially reflecting surfaces carried by the substrate, wherein the partially reflecting surfaces are parallel to each other and not parallel to any of the edges of the substrate. The method includes providing at least one transparent flat plate and plates having partially reflecting surfaces and optically attaching together the flat plates so as to create a stacked, staggered form. From the stacked, staggered form, at least one segment is sliced off by cutting across several plates and the segment is ground and polished to produce the light waves-transmitting substrate. The plates are optically attached to each other by an optically adhesive-free process.

A color changing television antenna with LED includes a casing, an antenna radiator in the casing, a coaxial cable situated at a rear end of the casing and connected to the antenna radiator. The casing contains an LED lamp, and a transparent display panel extending to the outside from the display panel. The part of the display panel inside the casing has a receiving slot for installing the LED lamp and allowing the LED lamp to project light onto a sidewall of the receiving slot. The display panel transmits the projected light by total reflection. A reflector is installed on a surface of the display panel for reflecting the light transmitted inside the display panel and forming a predetermined pattern. This television antenna can display a specific pattern and improve the display effect based on the principle of total reflection of the transparent display panel.

A grating device includes a supporting body having a first main face and a second main face, an under clad layer provided on the first main face of the supporting body, an optical material layer provided on the under clad layer, and a back face layer provided on the second main face of the supporting body. The under clad layer is composed of g a material having a refractive index of 1.69 or lower. The optical material layer is composed of a metal oxide having a refractive index of 1.70 or higher and 3.50 or lower and includes a Bragg grating. The back face layer is composed of a material having a refractive index of 1.69 or lower or a metal oxide having a refractive index of 1.70 or higher and 3.50 or lower.

An optical distribution and splice frame system includes rack(s), enclosure(s), cable management component(s), and/or cassette(s) that have features to allow for different cable management configurations not yet available in the market. A fiber optic cassette and enclosure are designed to enable flexibility in cable management configurations for the overall system.