3653 results about "First light" patented technology

Illumination methods and apparatus, in which a first number of first light sources are adapted to generate first radiation having a first spectrum, and a second number of second light sources are adapted to generate second radiation having a second spectrum different than the first spectrum. In one example, the first number of the first light sources and the second number of the second light sources are different. In another example, a first intensity of the first radiation and a second intensity of the second radiation are independently controlled so as to controllably vary at least an overall perceivable color of generated visible radiation. In yet another example, a first control signal controls all of the first light sources substantially identically, and a second control signal controls all of the second light sources substantially identically.

A device and system for use in procedures associated with the intra-oral cavity, the device having a probe member and a handpiece for holding the elongate probe member, the probe member having an elongate distal portion capable of being manipulated in the intra-oral cavity, the probe member comprising: at least one treatment channel having a distal opening in the elongate distal portion, the at least one treatment channel being configured for enabling operation of a suitable tool via the distal opening; at least one illumination channel comprising a first light guide having a first proximal end configured for optical coupling to a light source system, and a second distal end in the distal portion for illuminating regions of interest during operation of the device; at least one light collection channel configured for optical coupling to an imaging system and for collecting and transmitting light reflected from the regions of interest during operation of the device.

A process cartridge detachably mountable to a main assembly of an apparatus, includes a drum, a developing member, a cartridge frame including a developer accommodating portion, a first light guide adjacent one end of the cartridge frame and a leading end with respect to a cartridge mounting direction and including a light entrance portion opposed to an emitting portion to receive detecting light when the process cartridge is mounted to the main assembly and guiding the detecting light to cross with a developer accommodating space in the developer accommodating container, a second light guide adjacent the one end and the leading end, and including a light exit portion and directing, the detecting light having passed through the developer accommodating space to the light receiving portion, and a memory member communicatable with the main assembly and adjacent the one end o and the leading and including a cartridge electrical contact.

An optical position-tracking system comprises a first light beam steering device for sweeping a first light beam through a first angular range to cause a reflection of the first light beam by a target. Additionally, the optical position-tracking system further comprises a second light beam steering device for sweeping a second light beam through a second angular range to cause a reflection of the second light beam by the target. Moreover, the optical position-tracking system enables determination of a position of the target using a triangulation technique utilizing a first angular value of the first light beam and a second angular value of the second light beam. The first angular value and the second angular value depend on the existence of the respective reflection.

A tunable filter structure, and an optical method and device utilizing the same are presented for processing a multi-frequency light signal to separate therefrom a desired frequency range. The filter structure has an input for receiving the multi-frequency input light signal, a first output for outputting a first light component of the input light signal including light of said predetermined frequency range, a second output for outputting a second light component including a remaining portion of the input light signal, and an intermediate input. The first output and the intermediate input of the filter structure may be connected to, respectively, input and output of a tunable frequency-selective optical unit, which may be a second filter structure, amplifier, attenuator. By using the second filter structure with a different tuning range as compared to that of the first filter structure such that these tuning ranges define overlapping spectra of the filter structures, a two-stage filter device is provided.

The invention discloses a camera module, a periscopic camera module, a camera assembly and an electronic device, and belongs to the technical field of intelligent equipment. The camera module comprises a fixing piece, a lens assembly, an image sensor and a focusing assembly, and the image sensor is used for receiving light passing through the lens assembly. In the focusing assembly, a first lightturning piece is used for turning light in the process of transmitting the light from the lens assembly to the image sensor, and a second light turning piece is used for turning the light turned by the first light turning piece and is configured to move relative to the fixing piece so as to change the distance of the light transmitted from the lens assembly to the image sensor. According to the invention, the distance between the first light turning piece and the second light turning piece is adjusted, the distance of the propagation path of the light between the lens assembly and the image sensor can be adjusted, the focusing of the lens assembly is completed, the imaging of the image sensor is realized, and the length of the camera module in the optical axis direction of the lens assembly is shortened.

A grating-based sensor is disclosed that has a grating structure constructed and designed for both evanescent resonance (ER) fluorescence detection and label-free detection applications. Some embodiments are disclosed which are optimized for ER detection in an air mode, in which the sample is dry. Other embodiments are optimized for ER detection in liquid mode, in which the sample is suspended in liquid medium such as water. One and two-dimensional gratings are also disclosed, including gratings characterized by unit cells with central posts, central holes, and two-level, two-dimensional gratings. A readout system for such sensors is also disclosed. One embodiment includes a first light source optimized for collecting label-free detection data, a second light source optimized for collecting ER fluorescence amplification data, and at least one detector. In one embodiment, the detector is an imaging system and includes a CCD camera for collecting both ER and label-free data. In other embodiments, the at least one detector takes the form of a spectrometer for collection of label-free data and a photomultiplier for collecting ER data. In other embodiments, a single light source such as a tunable laser or broad band light source is used.

The invention relates to a light guide (10) for illuminating a light output window (120) of an illumination system (100), the illumination system, a backlighting system (100) and a display device (200). The light guide comprises a first light guide part (10A) comprising a first light guide extension (70A) extending from a first edge wall (40A) of the first light guide part (10A), and comprises a second light guide part (10B) comprising a second light guide extension (70B) extending from a second edge wall (40B) of the second light guide part (10B), the first light guide extension (70A) being configured for positioning a first light input window (80A) at a side of the second light guide part (10β) facing a rear wall (30B) of the second light guide part (10B), the second light guide extension (70B) being configured for positioning a second light input window (80B) at a side of the first light guide part (10A) facing the rear wall (30A) of the first light guide part. An effect of the light guide according to the invention is that due to the configuration of the first light guide extension and the second light guide extension, the first light input window of the first light guide part is arranged behind the second light guide part, and the second light input window of the second light guide part is arranged behind the first light guide part.

A combination hearing protector and illumination provider, including a right cup, a left cup, a band, a first light source, and a second light source. The right cup covers the right ear of a user. The left cup covers the left ear of the user. The band connects the right cup to the left cup and is worn over the top of the head of the user. The first light source is operatively connected to one of the right cup and the left cup and faces in a direction that is one of forward of the user and rearward of the user. The second light source is operatively connected to one of the right cup and the left cup and faces in a direction that is the other of forward of the user and rearward of the user. The first light source and the second light source illuminate in opposite directions to each other so as to illuminate forward of the user and rearward of the user.

An illuminating device includes a light source and a light receiving surface, first and second light exit surfaces. When a point at the edge of the light emitting surface is P2 and an axis which passes through a center P1 of a light emitting surface and is perpendicular to the light emitting surface is an optical axis, the optical element has a hollow around the optical axis. The first light exit surface is such that x coordinate of a point most distant from the optical axis on the first light exit surface is at least 1.5 times x coordinate of P2, that in 80% or more of an area in which x coordinate of a point is at least the x coordinate of another point P3, an angle of incidence of light emitted at P1 is at least the critical angle and that in 80% or more of an area in which x coordinate of a point is equal to or smaller than x coordinate of another point P4, an angle of incidence of light emitted at P2 is smaller than the critical angle.

A protruding locking pawl is provided at an end of a light guide which corresponds to a first light input surface. A recessed locking portion is formed in a frame so that the locking pawl can be locked in the locking portion. A light blocking member is slidably loosely inserted into a position where the light blocking member covers a longitudinal end of the light guide which corresponds to a second light input surface. Even if expansion and contraction occurs in the longitudinal direction of the light guide, the design dimensions of a first gap A and a second gap B can be maintained; the first gap A is formed between the first light input surface and a first light source, and the second gap B formed between the second light input surface and a second light source. Therefore, possible leakage current can be prevented.