Abstract: A method for altering fluorescent emissions of particles includes setting the particles in motion and exposing the moving particles to light such that fluorescent intensities of the particles are lessened isotropically and substantially simultaneously. Another method includes measuring fluorescent emissions of particles, determining the measured fluorescent emissions do not collectively fit within a first predetermined range of fluorescent values, and exposing the particles to one or more incidents of light that are configured to cooperatively alter the fluorescent emissions of the particles to be within a second predetermined range of fluorescent values. An embodiment of an apparatus includes a vessel configured to contain a plurality of particles and a means for setting the particles in motion. The apparatus further includes an illumination subsystem configured to direct light toward the vessel and at a spectral window (i.e.

Abstract: A light receiving circuit in accordance with an exemplary aspect of the present invention includes a photodiode 6 that converts an optical input signal into a current signal, and an I-V conversion circuit 8 that converts the current signal into a voltage signal. The light receiving circuit further includes a transient current processing circuit 21 that process a transient current from the I-V conversion amplifier 8 when the I-V conversion amplifier 8 is changed from an operating state to a non-operating state, and a clipping circuit 24 that keeps the voltage of the input terminal of the transient current processing circuit 21 at a predetermined value.

Abstract: A measuring apparatus for scanning moving, preferably sheet-like, printing materials in a printing material-processing machine, such as a press for processing sheet material. The apparatus has a measuring device which can be moved, at least in the transport direction of the printing materials. The measuring apparatus is set up in such a way that, during a measuring operation, the measuring device is moved over the moving printing material in the transport direction of the printing material with a differential speed relative to the transport speed of the printing material.

Abstract: A system and/or a method reads, measures and/or controls intensity of light emitted from a light-emitting diode (LED). The system and/or the method have a light intensity detector adjacent to the LED for reading and/or measuring the intensity of light emitted from the LED. The system and/or the method have a control circuit that may be electrically connected to both the detector and/or the LED for measuring and/or for controlling an intensity of light emitted from the LED. A housing surrounds the light detector and/or the LED. The housing has a pathway that allows only light emitted from the LED to reach the light detector. The LED has a finish and/or a coating that eliminates and/or retards absorption of light by internal components of the LED. The finish and/or the coating eliminates and/or retards reflection of the light by the LED.

Abstract: A projection type image display unit has a housing on which a light source and an image display part for transmission or reflection of light from the light source are mounted. The unit includes a position adjusting device, by which a displayed position of an image is adjusted. The position adjusting device comprises: a manipulation member being vertically movable with a part thereof projecting from a side of the housing; a leg member projecting from a bottom of the housing and adapted to freely vary an amount of the projection thereof; and a connecting member connecting the manipulation member with the leg member to set the amount of the projection of the leg member by manipulating the manipulation member in a vertical direction. The connecting member comprises a lever member so that a movement direction of the manipulation member becomes the same as a movement direction of the housing and a movement amount of the manipulation member substantially becomes the same as a movement amount of the housing.

Abstract: The irradiation unevenness caused by drift occurring in a beam short-axis direction is reduced without adding a new beam shaping unit and affecting the propagation characteristic of a beam in an optical resonator. A position deviation detector for detecting a position deviation of a laser beam before passing through a beam shaping optical system, an angle deviation detector for detecting an angle deviation of the laser beam before passing through the beam shaping optical system, a deflection mirror for deflecting the laser beam, which is disposed in an optical path between a laser and an object (substrate), and a mirror controller for controlling orientation of the deflection mirror, based on detection data obtained using the position deviation detector and the angle deviation detector so as to eliminate the position deviation from a reference irradiation position in the short-axis direction of a linear beam on a surface to be irradiated.

Abstract: A projector includes a casing, an optical engine, and a heat dissipating module. The casing includes a first sidewall, a front wall defining a hole, a second sidewall, and a rear wall connected in sequence. The optical engine includes a lens module substantially aligned with the hole defined by the front wall, a DMD, and an illuminator module. The illuminator module is arranged at a side of the lens module away from the second sidewall, and includes a housing having a side surface away from the lens module and at least one light source installed on the side surface. The heat dissipating module includes a first heat sink attached to the at least one light source, a blower, and an exhaust fan. The blower is for blowing air towards the first heat sink from an air inlet.

Abstract: An illumination device includes: a light source unit that emits coherent light; and a diffractive optical element that diffracts the coherent light emitted from the light source unit and makes the diffracted light travel to an illuminated surface. The diffractive optical element is disposed such that the coherent light is incident in a state of being inclined with respect to a perpendicular line of a reference plane on which the diffractive optical element is disposed. Zero-order light, which is light other than the diffracted light, of light components emitted from the diffractive optical element travels to a position other than the illuminated surface.

Abstract: Provided is an optical device, comprising a plurality of polarizers that are arranged along a propagation direction of incident light; a first phase element that is disposed between the plurality of polarizers and that has a phase lag axis forming a prescribed angle relative to transmission axes of the polarizers arranged along the propagation direction; and a second phase element that is disposed between the first phase element and one of the polarizers arranged along the propagation direction, and that provides the incident light with a prescribed phase difference. An angle of the phase lag axis of the second phase element is adjusted such that the optical device transmits light in a prescribed wavelength region in the incident light.

Abstract: A light surface display for providing a three-dimensional image including a plurality of particles suspended within a volumetric display. A first projection system projects sequential slices of electromagnetic energy of one or more wavelengths along the length and width of the volumetric display energizing particles to form a two-dimensional image. A second projection system projects translational slices of electromagnetic energy of one or more wavelengths that intersect with the energized particles across the depth of the volumetric display. A control system synchronizes the projection of the image source and the activation source such that the two-dimensional image and the translational slices energize the particles for a pre-determined length of time so that the particles illuminate to form an illuminated three-dimensional image.

Abstract: A system for detecting single-shot pulse contrast includes a correlator generating a correlation signal, a spectral filter filtering light signals having wavelengths different from the correlation signal, a fiber array comprising a plurality of fibers with different lengths for transmitting the correlation signal in parallel forming parallel correlation signals, and a fiber bundle bounding the fibers at the end thereof for converging the parallel correlation signals, wherein due to different lengths of the fibers, the parallel correlation signals are converted into serial correlation signals at end of the fibers, a plurality of fiber attenuators spliced into at least one of the fibers respectively for attenuating the parallel correlation signals, a detector for detecting the serial correlation signals to produce analog signals, an A/D convertor converting the analog signals to digital signals, and a computer for processing the digital signals for retrieving the single-shot pulse contrast.

Abstract: An optical device includes: a plurality of reflection type light modulation devices; a plurality of reflection type polarization plates; a plurality of attachment members; a color combining device; a plurality of adjustment members; engaging projections provided on either the attachment members or the adjustment members and projecting toward the others of the attachment members and the adjustment members; and engaging receivers provided on the others of the attachment members and the adjustment members such that the engaging projections are inserted into the engaging receivers with clearances between the engaging receivers and the engaging projections.

Abstract: The image projection apparatus includes an exhaust air outlet through which an exhaust air flows out from an inside of the apparatus to an outside thereof, an air inlet through which an external air flows in from the outside of the apparatus to the inside thereof, a temperature detector which detects a temperature of the external air flowing into the inside of the apparatus through the air inlet, and a controller which performs a protection operation when one of a predetermined temperature corresponding to a temperature of the exhaust air and a predetermined temperature change caused by flowing in of the exhaust air through the air inlet is detected by the temperature detector. The apparatus enables quick detection of a state in which the exhaust air outlet is blocked to perform the protection operation.

Abstract: A light sensing panel includes a scan line transmitting a scan signal, a power source line transmitting a bias voltage, a readout line transmitting a light sensing signal and a light sensing device. The light sensing device includes a control electrode that is electrically connected to the scan line to receive the scan signal, a first current electrode that is electrically connected to the power source line to receive the bias voltage, and a second current electrode that is electrically connected to the readout line to apply a light sensing signal to the readout line when the light sensing signal senses an external light. The light sensing panel requires only one thin film transistor in order to detect a position wherein the external light is incident. Therefore, electrical coupling between devices is reduced and aperture ratio is increased, thereby enhancing a display quality.

Abstract: An image sensor module may include an image sensor, a variable thickness member and a lens member. The image sensor may include a light receiver configured to receive a light. Further, a driving voltage may be applied to the image sensor. The variable thickness member may be arranged on the image sensor adjacent to the light receiver. Further, the variable thickness member may have a variable thickness along an optical axis of the light in accordance with the driving voltage through the image sensor.

Abstract: An oblique projection optical system enlarges an image formed on a display device surface, and obliquely projects the enlarged image on a screen surface. The oblique projection optical system has, in the order from a reduction side: a refraction optical portion having a positive optical power, a concave reflection surface having a positive optical power, and a convex reflection surface having a negative optical power. The refraction optical portion includes a rotationally symmetric coaxial refraction group. An intermediate image of the image formed on the display device surface is formed between the refraction optical portion and the concave reflection surface. An aperture stop image is formed between the concave reflection surface and the convex reflection surface. The concave reflection surface and the convex reflection surface fulfill prescribed conditional formulae.

Abstract: The present invention provides a photoelectric conversion device capable of detecting light from weak light to strong light and relates to a photoelectric conversion device having a photodiode having a photoelectric conversion layer; an amplifier circuit including a transistor; and a switch, where the photodiode and the amplifier circuit are electrically connected to each other by the switch when intensity of entering light is lower than predetermined intensity so that a photoelectric current is amplified by the amplifier circuit to be outputted, and the photodiode and part or all of the amplifier circuits are electrically disconnected by the switch so that a photoelectric current is reduced in an amplification factor to be outputted. According to such a photoelectric conversion device, light from weak light to strong light can be detected.

Abstract: An active infrared induction instrument powered by a dry battery capable of reducing power consumption through the adjustment of the emitter pulse width. The infrared emitting LED emits infrared signals, which, after being reflected by an object, are received by the infrared photodiode. The infrared signals received by the infrared photodiode then enter an integrated circuit chip through a comparator. The pulse widths of the infrared emission pulse signals are dynamically adjusted after the width of the pulse series is received by the discrimination chip, thus reducing the emission power consumption to save energy.

Abstract: An encoder is provided in which the absolute angle can be detected with high accuracy even when the irradiated position of light to be detected with respect to a scale is displaced from a reference, and a photodetecting device for an encoder used for such an encoder. In the encoder 1, by passing light to be detected through a straight-line light transmitting portion 17, a bright portion 19 to which the light to be detected is irradiated is formed in an area of a scale plate 11 containing mutually separate parts of arranged lines L1 and L2 and also a dark portion 20 to which no light to be detected is irradiated is formed in the other area.

Abstract: Embodiments of the present invention relate to a detector comprising first and second lenses for use with respective first and second sensing means; each lens comprising a plurality of Fresnel facets having respective fields of view adapted such that the fields of view of the first lens are alternately arranged with the fields of view of the second lens such that the fields of view of the first lens are adjacent only to, but do not overlap with, the fields of view of the second lens in a single direction.