Abstract:
An automated shutter for dark acclimating a sample, comprising a base and a head mounted to the base and movable between an open and closed position. The automated shutter further comprises one or more artificial light sources and one or more optical detectors disposed in said head or base, and wherein the head is contiguous with the sample when moved into the closed position. Another embodiment comprises an enclosure placed over a sample to be dark acclimatised, with one or more artificial light sources and optical detectors disposed within or closely adjacent to said enclosure which is configured to be transformed between an optically transparent state and an optically opaque state.
Abstract:
A bonded wire inspection apparatus for inspecting wires bonded between the pads of a semiconductor chip and the leads of a lead frame including: a vertical illuminator that illuminates an object of inspection from above; an optical assembly that images particular portions of the object such as the ball at one end of a wire and the crescent at another end of the wire, by receiving the light that is emitted from the vertical illuminator and reflected by the object; a camera that photographs the image obtained by the optical assembly; and a diaphragm that is provided beneath the vertical illuminator and electrically changeable in its opening diameter. Thus, by adjusting the opening diameter of the diaphragm, clear images of the object are constantly obtained despite the differences of surface smoothness of the portions to be inspected.
Abstract:
셔터 어셈블리(shutter assembly)는, 제 1 셔터 블레이드(shutter blade) ― 상기 제 1 셔터 블레이드는 상기 제 1 셔터 블레이드로부터 연장되는 제 1 톱니형 아암(toothed arm) 및 상기 제 1 셔터 블레이드 내의 제 1 광 전송 애퍼처(light transmitting aperture)를 가짐 ―, 및 상기 제 1 셔터 블레이드 근처에 그리고 상기 제 1 셔터 블레이드에 평행하게 포지셔닝(position)된 제 2 셔터 블레이드를 포함한다. 상기 제 2 셔터 블레이드는 상기 제 2 셔터 블레이드로부터 연장되는 제 2 톱니형 아암 및 상기 제 2 셔터 블레이드 내의 제 2 광 전송 애퍼처를 갖는다. 상기 제 1 및 제 2 셔터 블레이드들은 평행 선형 움직임을 허용하도록 지지된다. 모터 기어(motor gear)는, 상기 기어의 회전이, 상기 제 1 및 제 2 광 전송 애퍼처들이 서로에 관하여 오버랩핑 관계(overlapping relationship)에 있는 개방 포지션(open position)과 상기 제 1 및 제 2 광 전송 애퍼처들이 서로에 관하여 비-오버랩핑 관계(non-overlapping relationship)에 있는 폐쇄 포지션(closed position) 사이에서 반대 방향들로 선형으로 상기 제 1 및 제 2 셔터 블레이드들이 움직이게 초래하도록, 상기 제 1 및 제 2 톱니형 아암들 사이에 배치되고, 상기 제 1 및 제 2 톱니형 아암들과 맞물린다.
Abstract:
A shutter assembly includes a first shutter blade having a first toothed arm extending therefrom and a first light transmitting aperture therein, and a second shutter blade positioned adjacent and parallel to the first shutter blade. The second shutter blade has a second toothed arm extending therefrom and a second light transmitting aperture therein. The first and second shutter blades are supported to allow parallel linear motion. A motor gear is disposed between, and meshed with, the first and second toothed arms such that rotation of the gear causes the first and second shutter blades to move linearly in opposite directions between an open position in which the first and second light transmitting apertures are in an overlapping relationship with respect to one another, and a closed position in which the first and second light transmitting apertures are in a non-overlapping relationship with respect to one another.
Abstract:
The present disclosure, among other things, describes a reader system for analyzing one or more analytes in a fluid sample, comprising a casing (204) with at least one port (201) leading to a holster (301) which is configured to receive a cartridge (107) comprising a vertically oriented immunoassay device for analyzing one or more analytes in a fluid sample, an optical system (121) with excitation optics comprising a light source (302) and an excitation lens (305) configured to transmit light from the light source (302) and thereby excite a region of the vertically oriented immunoassay device when a cartridge (107) is placed in the holster (301), and collection optics comprising a photosensor (306) and a collection lens (307) configured to collect emitted light from the vertically oriented immunoassay device when a cartridge (107) is placed in the holster (301), an electromechanical motor system (106) configured to move the holster (301) in a vertical direction with respect to the optical system (121) so that the optical system (121) can interrogate different regions of the vertically oriented immunoassay device when a cartridge (107) is placed in the holster (301), and one or more digital processors (104a, 104b) and associated electronics configured to receive data from and control the optical system (121) and to control the electromechanical motor system (106).
Abstract:
A method and apparatus for visually detecting when a luminescent dissolved oxygen sensor is operating is disclosed. In one example embodiment of the invention, a shutter (216) is placed into the light tight container. When the shutter (216) is open, a user can see into the light tight container and verify probe operation. When the shutter (216) is closed, external light is prevented from entering the light tight container and affecting measurement accuracy. In another example embodiment of the invention, one end of a light pipe (526) is placed on the outside of the light tight container, and the other end is positioned to view the light source (504) of the probe. In another example embodiment of the invention a second light source (628), visible on the outside of the light tight container, is used to verify operation of the probe. In another example embodiment of the invention, a predetermined area is left open in the optically opaque hydrostatically transparent (814) on the face of the sensor window, allowing a user to see light from the sensor when the sensor is operating properly.
Abstract:
An apparatus for measuring light in samples using a high intensity light source (12), is presented. The system utilizes bifurcated fiber bundle (26) to transmit light at the excitation and emission wavelength bands. It also uses a band-pass filter (36) for eliminating extraneous light, including that which corresponds to the excitation wavelength range, while permitting the emitted light to pass to a detector (41) for quantitation. The system employs a shutter (39) to shield the detector (41) while the laser light source is activated, and a controller to intermittently activate the laser light and close the shutter. The apparatus preferably includes lenses (16, 17, 37) for better illumination and read out conditions. The apparatus is employed in Luminescence Oxygen Channeling Immunoassays. The method has high sensitivity, accuracy and precision, and the apparatus is highly compact. Accordingly, the analyzer can perform assays in nanoliter to microliter sample volumes in standard microplates having at least 96, 384 or 1536 wells.