A unique electro optical robot design is disclosed, which includes hollow optical members creating a beam delivery system. The laser beam is coupled to an input aperture on the robotic arm and travels through hollow arms which rotate in respect to each other. Said input laser beam is delivered to a specific point in space within the reach of the arms with great accuracy. The arms themselves are designed to minimize angular deviations by using elongated periscopes or retroreflectors. This design is characterized by the ability to deliver a near collimated laser beam with great accuracy and capable of fusing together several laser beams of different wavelengths. Moreover, since the laser beam travels in a collimated mode, a lightweight focuser is the only necessary optical element, thus significantly reducing the load on the end tip of said robotic arms. The purpose of this invention is to offer a multi wavelengths accurate beam delivery system, acting in a robotic mode.

A unique electro optical robot design is disclosed, which includes hollow optical members creating a beam delivery system. The laser beam is coupled to an input aperture on the robotic arm and travels through hollow arms which rotate in respect to each other. Said input laser beam is delivered to a specific point in space within the reach of the arms with great accuracy. The arms themselves are designed to minimize angular deviations by using elongated periscopes or retroreflectors. This design is characterized by the ability to deliver a near collimated laser beam with great accuracy and capable of fusing together several laser beams of different wavelengths. Moreover, since the laser beam travels in a collimated mode, a lightweight focuser is the only necessary optical element, thus significantly reducing the load on the end tip of said robotic arms. The purpose of this invention is to offer a multi wavelengths accurate beam delivery system, acting in a robotic mode.

A display system of a vehicle displays a virtual image. The display system has a projection device, which is configured to emit display light in order to generate an image, and a reflecting device, which is configured for a first reflection of display light of the projection device arranged above the reflecting device by way of the reflecting device attached in or on an instrument panel of the vehicle. The display light of the projection device incident on the reflecting device is substantially retroreflected. The display system further includes a windshield of the vehicle, which windshield is configured for a second reflection of at least part of the display light, which was reflected by the reflecting device, to the eyes of an observer in the vehicle in order to allow the observer to see, behind the windshield, the virtual image of the image generated by the projection device.

A display system of a vehicle displays a virtual image. The display system has a projection device, which is configured to emit display light in order to generate an image, and a reflecting device, which is configured for a first reflection of display light of the projection device arranged above the reflecting device by way of the reflecting device attached in or on an instrument panel of the vehicle. The display light of the projection device incident on the reflecting device is substantially retroreflected. The display system further includes a windshield of the vehicle, which windshield is configured for a second reflection of at least part of the display light, which was reflected by the reflecting device, to the eyes of an observer in the vehicle in order to allow the observer to see, behind the windshield, the virtual image of the image generated by the projection device.

A wavelength tunable bidirectional optical wireless communication system based on self-injection lock includes one optical node and multiple optical terminals, wherein the optical node consists of a tunable filter and a self-injection lock system to replace the conventional optical amplifier while achieving an amplified optical power, increasing the modulation bandwidth, wavelength adjustment and reducing the linewidth of each wavelength, in a low noise criteria. The optical terminal is composed by a modulated retroreflector to achieve the purpose of lightweight and low power consumption.

An optical gene biosensor is disclosed. The optical gene biosensor includes a substrate; a molecular beacon anchored to the substrate, wherein the molecular beacon includes an oligonucleotide specifically binding to a target nucleic acid molecule and a first compound bound to a first terminal of the oligonucleotide; an optical marker specifically binding to the first compound, wherein the optical marker is configured to retro-reflect irradiated light; a light source for irradiating the optical marker with light; and a light-receiver for receiving light retro-reflected from the optical marker. The optical gene biosensor may perform accurate quantitative analysis of a target nucleic acid molecule using both non-spectral and spectral light sources.

An optical bio-sensing device includes a transparent substrate covering a top of a space accommodating therein a sample containing a target bio-material; a signal converter fixed to the transparent substrate, and including the upconversion nanoparticles for receiving incident light and emitting converted light of a wavelength shorter than a wavelength of the incident light; a signal reflector including retroreflection particles bindable to the signal converter via the target bio-material, wherein the retroreflection particles retroreflect the converted light; a light source for irradiating the incident light to the signal converter; and a light receiver for receiving light retroreflected from the signal reflector.

An optical bio-sensing device includes a transparent substrate covering a top of a space accommodating therein a sample containing a target bio-material; a signal converter fixed to the transparent substrate, and including the upconversion nanoparticles for receiving incident light and emitting converted light of a wavelength shorter than a wavelength of the incident light; a signal reflector including retroreflection particles bindable to the signal converter via the target bio-material, wherein the retroreflection particles retroreflect the converted light; a light source for irradiating the incident light to the signal converter; and a light receiver for receiving light retroreflected from the signal reflector.

Many in the space weather community consider our understanding of the buoyancy of the thermosphere and its effects on the orbits of satellites in Low Earth Orbit (LEO) to be insufficient during short time frames. Disclosed herein is an approach for making on-demand thermosphere buoyancy measurements using a deployable low mass retroreflector with CubeSat-like dimensions. A CubeSat storing many retroreflectors can dispense one or more of these passive satellites according to a predetermined schedule or on-command, in response to an observed space weather phenomenon like a coronal mass ejection. With measurements of the orbit decay from these passive satellites, a better understanding of the relationship between space weather and orbital decay can be established with relatively low cost.

A lens device includes a control module having a control circuit board and a photosensitive element, a light emitting module having a light source circuit board and a light emitting element. The lens module is configured to be corresponsive to the photosensitive element and includes a lens barrel and plural lenses; the focusing lens is installed at a front end of the lens module; the reflector is installed between the lens module and the focusing lens; the hood is connected to the lens barrel and has a shading section extending outwardly from a front edge of the lens barrel for blocking a light reflected by the reflector and prevent the light from entering into the lens barrel directly, so as to avoid poor image quality caused by the light with a poor angle that enters into the lens barrel.