Abstract: A fluorescence reader for an optical assay arrangement that includes a polymeric sample substrate having a reaction site-surface and a substrate surface. The fluorescence reader includes a light source arranged to illuminate the reaction site-surface through the substrate surface, and a detector device arranged to detect fluorescent light emitted from the reaction site-surface and transmitted through the substrate surface, the substrate surface being configured to increase transmission of emitted fluorescent light by suppression of total internal reflection.

Abstract: A fluorescence reader for an optical assay arrangement that includes a polymeric sample substrate having a reaction site-surface and a substrate surface. The fluorescence reader includes a light source arranged to illuminate the reaction site-surface through the substrate surface, and a detector device arranged to detect fluorescent light emitted from the reaction site-surface and transmitted through the substrate surface, the substrate surface being configured to increase transmission of emitted fluorescent light by suppression of total internal reflection.

Abstract: A fluorescence reader for an optical assay arrangement includes a polymeric sample substrate having a reaction site-surface and a substrate surface. A light source is arranged to illuminate the reaction site-surface through the substrate surface, and a detector device is arranged to detect fluorescent light emitted from the reaction site-surface and transmitted through the substrate surface, the substrate surface provided, for example, as a light-collecting body to allow fluorescent light rays exceeding a critical emission angle for total internal reflection to escape the substrate and enter the body.

Abstract: An apparatus is controlled to detect a location of an object on a touch surface of a panel. An input scanner arrangement introduces at least two beams of radiation into the panel for propagation by internal reflection, and sweeps the beams inside the panel across a sensing area. An output scanner arrangement is synchronized with the input scanner arrangement so as to receive the beams from the input scanner arrangement while they are swept across the sensing area and to direct the beams onto at least one radiation detector. Thereby, each beam is introduced and received on opposite ends of the sensing area. A data processor is connected to the radiation detector and operated to identify the location based on an attenuation of the beams caused by the object touching the touch surface within the sensing area.

Abstract: An optical aiming device of the type having a light source and a reflective minor or lens reflecting or projecting an image of a rectile to the eye of a user. The optical aiming device comprises a light sensor arrangement being arranged to cooperate with the light source to enable the adjustment the light intensity of the image of the reticle as a function of the detected light. The light sensor arrangement comprises at least one lens having at least one convex surface and at least one detector wherein the detector is arranged on a distance from the lens so as to detect light from a predetermined area on a predetermined distance from the lens.

Abstract: An apparatus is controlled to detect a location of an object on a touch surface of a panel. An input scanner arrangement introduces at least two beams of radiation into the panel for propagation by internal reflection, and sweeps the beams inside the panel across a sensing area. An output scanner arrangement is synchronized with the input scanner arrangement so as to receive the beams from the input scanner arrangement while they are swept across the sensing area and to direct the beams onto at least one radiation detector. Thereby, each beam is introduced and received on opposite ends of the sensing area. A data processor is connected to the radiation detector and operated to identify the location based on an attenuation of the beams caused by the object touching the touch surface within the sensing area.

Abstract: Fluorescence reader (10) for an optical assay arrangement comprising a polymeric sample substrate (1) having a reaction site-surface and a substrate surface (3), the fluorescence reader comprising a light source (5) arranged to illuminate the reaction site-surface through the substrate surface, and a detector device (6) arranged to detect fluorescent light emitted from said reaction site-surface and transmitted through the substrate surface, the substrate surface provided with total-internal-reflection suppressing means (15).

Abstract: This invention relates to a measurement device, for optically measuring a property of a measurement object, the measurement device comprising a main resonator having a first and a second reflecting end defining a cavity having an effective optical cavity length, an optical gain element for generating light travelling along an optical beam path between the first and second reflecting ends, and a dispersive focusing resonator element which is positioned along the optical beam path between the optical gain element and the second reflecting end, whereby the measurement object is arranged to be at least partly positioned within the optical beam path of the main resonator, and whereby the measurement device further comprises a detection means for detecting a characteristic of light emitted from the main resonator, the value of the detected characteristic being a measure of a property of the measurement object.

Abstract: This invention relates to a measurement device, for optically measuring a property of a measurement object, the measurement device comprising a main resonator having a first and a second reflecting end defining a cavity having an effective optical cavity length, an optical gain element for generating light travelling along an optical beam path between the first and second reflecting ends, and a dispersive focusing resonator element which is positioned along the optical beam path between the optical gain element and the second reflecting end, whereby the measurement object is arranged to be at least partly positioned within the optical beam path of the main resonator, and whereby the measurement device further comprises a detection means for detecting a characteristic of light emitted from the main resonator, the value of the detected characteristic being a measure of a property of the measurement object.

Abstract: The invention relates to a device and method for tuning the wavelength of the light in an external cavity laser. The external cavity laser comprises an optically amplifying semiconductor chip, a first reflecting surface, an Anti-Reflection (AR) coated semiconductor chip facet, a diffraction grating on which at least part of the beam originating from the AR coated semiconductor chip facet is incident and diffracted back to the optically amplifying semiconductor chip, means for collimating the light emitted from the AR coated semiconductor chip facet towards the diffraction grating, and a movable part. By the movement of the moveable part, the wavelength of the light can be turned in the external cavity laser. The movable part of the external cavity laser exhibits a rotational movement relative to the optical axis of the external movement being actuated by an electrodynamic force generated within an integral section of the moveable part.

Abstract: The present invention relates to an approach to locking the output wavelength of a laser that uses an etalon having non-parallel surfaces. Under this approach, the non-parallel etalon is formed from a readily available, low cost optical component, and may include an etalon with a wedged shape or with at least one curved surface. This approach offers significant advantages over the use of a planar etalon. It provides two degrees of freedom in alignment of the device, and so both the absolute wavelength and the spacing between the interference fringes can be independently adjusted. It also reduces the cost and difficulty of assembly, since it utilizes standard optical parts with wide tolerances. The invention may be used within a standard laser package. The invention also permits the laser to be tuned to a precise operating wavelength by setting various tuning signals according to values stored in memory.

Abstract: The invention relates to a device (300) for tuning the wavelength of the light in an external cavity laser. The external cavity laser comprises an optically amplifying semiconductor chip (310), a first reflecting surface (312), an Anti-Reflection (AR) coated semiconductor chip facet (314), a diffraction grating (330) on which at least part of the beam originating from the AR coated semiconductor chip facet (314) is incident and diffracted back to the optically amplifying semiconductor chip (310), means (320) for collimating the light emitted from the AR coated semiconductor chip facet (314) towards the diffraction grating (330), and a movable part (360) by means of the movement of this said part the wavelength of the light can be tuned in the external cavity laser.

Abstract: An optical fiber cable for high power laser radiation transmission comprises a fiber having a core and a surrounding cladding, a rod provided at at least one of contact ends of the core and fused to an end surface of the core the rod having larger diameter than that of the core, and a reflector provided at this end of the fiber, the rod being designed to conduct rays entering outside the fiber towards an area where they can be absorbed without causing any damage, to conduct rays not linked into the fiber towards the reflector.

Abstract: An optical fiber for transmitting high optical power and of the type having a central core portion adapted to conduct radiation, a cladding layer surrounding the core and at least one covering surrounding the cladding adapted to give an improved mechanical stability to the fiber and to damp scattered radiation wherein, in order to prevent the radiation level in any volume part of the covering from exceeding the limit at which the material of the covering is damaged, the fiber is, at least at its entrance side over a part of its length, provided with radiation resistant and radiation absorbing materials comprising a radiation resistant transmitting material with a real refractive index exceeding or close to that of the cladding, and one, or several, additional material layers of which the outermost are of heat-conducting materials, the radiation being absorbed in the outermost heat-conducting layer(s).