Abstract: A fiber cleaver is provided in which a circular blade can be efficiently used without increasing the workload imposed on the worker. The fiber cleaver includes a main body supporting a slider such that the slider is movable in the front-back direction. A disc-shaped circular blade configured to make a flaw in an optical fiber is rotatably provided to the slider. A columnar protrusion stands on a base of the main body. An engaging member engaging with a gear that rotates together with the circular blade is provided at the upper end of the columnar protrusion. The columnar protrusion is connected to an engaging member, which engages with the slider, with a spring interposed therebetween. The base has first to third recessed portions each anchoring the engaging member. The angle of rotation of the circular blade is changed among three angles with the position where the engaging member is anchored.

Abstract: A method and structure for reinforcing a fusion splice part where optical fiber cores extending from sheaths of a pair of optical cables are spliced to each other, wherein a reinforcing member is provided along the fusion splice part so that both ends of the reinforcing member overlap with each of the sheaths of the optical cables; an adhesive tube covers the periphery of the fusion splice part provided with the reinforcing member so that both ends of the adhesive tube overlap with each of the sheaths of the optical cables, and is contracted; and a protective tube covers the periphery of the adhesive tube so that both ends of the protective tube overlap with each of the sheaths of the optical cables, the adhesive tube is outwardly projected in the length direction, and is contracted.

Abstract: A case for accommodating a fiber cleaver is capable of preventing the fiber cleaver from being damaged. The case accommodating a fiber cleaver includes a base and a lid such that the lid is openably and closably provided for the base in an integrated fashion. The base of the case has therein a positioning space for the cleaver on its inner bottom surface, the positioning space positioning a main body included in a cleaver unit. Latches protruding inwardly in the base of the case are arranged on positioning walls defining part of the positioning space for the cleaver. The latches have a function of retaining a support of the main body of the cleaver in a direction along the height of the base of the case. The latch further has a function of retaining a slider included in the cleaver unit in a sliding direction.

Abstract: The present invention provides a liquid crystal display device which can achieve cost reduction, excellent productivity, and a high contrast ratio within a wide viewing angle range. The liquid crystal display device of the present invention includes, in the order set forth, a first polarizer, a first ?/4 plate, a liquid crystal cell, a second ?/4 plate, a third Type-I birefringent layer, a Type-IV birefringent layer, and a second polarizer. An in-plane slow axis of the first ?/4 plate forms an angle of about 45° with an absorption axis of the first polarizer. An in-plane slow axis of the second ?/4 plate is substantially perpendicular to the in-plane slow axis of the first ?/4 plate. An absorption axis of the second polarizer is substantially perpendicular to the absorption axis of the first polarizer. An in-plane slow axis of the third Type-I birefringent layer is substantially parallel with the absorption axis of the second polarizer.

Abstract: The present invention provides a liquid crystal display device that can achieve sufficient front contrast ratio and front white brightness at the same time. The present invention is a liquid crystal display device including a front polarizing plate, a liquid crystal cell, a back polarizing plate, and an optical element having polarization characteristics, which are arranged in the stated order, wherein the back polarizing plate has a lower contrast than the front polarizing plate, and there is substantially no air layer between the back polarizing plate and the optical element having polarization characteristics.

Abstract: This liquid crystal display device (100) includes: a vertical alignment liquid crystal layer (30); first and second substrates (10, 20); first and second electrodes (11, 21) arranged on the first and second substrates to face the liquid crystal layer; and two photo-alignment films (12, 22). Each pixel region includes first and second liquid crystal domains, of which the reference alignment directions defined by the two photo-alignment films are a first direction and a second direction different from the first direction, respectively. The first electrode has a slit cut region (11R1), through which a slit (11s) has been cut to run substantially parallel to the reference alignment direction, in a part of a region allocated to each of the first and second liquid crystal domains. The width (W) of the slit is set so that when the highest grayscale voltage is applied to the first electrode, an effective applied voltage decreases by at least 0.

Abstract: An optical fiber cleaver includes a cleaver base body having a holder guide portion which positions a fiber holder holding an optical fiber, and a cleaver lid body attached to the cleaver base body to be openable and closable. A slider having a blade member piercing the optical fiber is attached to the cleaver base body to be movable in a width direction. A pawl member is arranged in one sidewall of the holder guide portion. Further, a count indication mechanism which counts and indicates the number of times the slider returns to an initial position is provided in the cleaver base body. The optical fiber cleaver is configured to enable a counting operation of the count indication mechanism only when the fiber holder is set in the holder guide portion such that the pawl member is pressed.

Abstract: A slider is attached to a cutter main body of an optical fiber cutter in a forward/backward movable state. A round blade member for making a scratch in an optical fiber is attached to the slider in a rotatable state. An operation lever pin for changing over rotation operation modes from one to another is attached to one end side of a pin member which penetrates a wall of the cutter main body. The rotation operation modes include a non-rotation mode for preventing the round blade member from being rotated and a continuous rotation mode for rotating the round blade member by a predetermined angle with every backward movement of the slider.

Abstract: A three-dimensional video recognition system comprises a display device, a front plate, and AS glasses. Each of the AS glasses includes a first ?/4 plate, a first linear polarizing element, a liquid crystal cell, and a second linear polarizing element in this order from the outer surface side. The display device includes a third linear polarizing element on an observation surface side of the display device. The front plate has a second ?/4 plate. Specific angles formed between a transmission axis of polarizing elements and ?/4 plates are provided.

Abstract: The optical fiber cutter 1 comprises a cutter base 3 and a cutter lid 4 attached openably and closably to the cutter base 3. A slider 8 having a blade member for incising an optical fiber is attached to the cutter base 3 so as to be movable widthwise. A switching plate 15 is attached to a rear end part of the cutter base 3, while a switcher 16 is provided on the outer surface side of the switching plate 15. When the switcher 16 is at a first position, the cutter lid 4 engages a stopper, thereby attaining an opening angle of 35°. When the switcher 16 is at a second position, the engagement between the cutter lid 4 and the stopper is released, whereby the cutter lid 4 attains an opening angle of 70°.

Abstract: An optical element module according to the present invention includes a plurality of optical elements laminated therein, each optical element including: an optical surface at a center portion thereof; and a spacer section having a predetermined thickness on an outer circumference side of the optical surface, wherein an adhesive is positioned on a further outer circumference side of the spacer section, and the upper optical element and the lower optical element are adhered to each other such that an inside and an outside of the adhesive are ventable through a ventilating section of the adhesive.

Abstract: The present invention provides a liquid crystal display device that can achieve sufficient front contrast ratio and front white brightness at the same time. The present invention is a liquid crystal display device including a front polarizing plate, a liquid crystal cell, a back polarizing plate, and an optical element having polarization characteristics, which are arranged in the stated order, wherein the back polarizing plate has a lower contrast than the front polarizing plate, and there is substantially no air layer between the back polarizing plate and the optical element having polarization characteristics.

Abstract: A self-piercing rivet setting machine comprises a C-shaped arm and a receiver section disposed at one end of the C-shaped arm to receive a self-piercing rivet fed from a feeder. The receiver section has a rivet-reach detection sensor to detect the presence or absence of a self-piercing rivet in a driving chamber therein. If the rivet-reach detection sensor detects the absence of any self-piercing rivet in the driving chamber, the sensor outputs a signal to prevent a punch from being driven.

Abstract: An electronic element wafer module is provided, comprising: an electronic element wafer arranged with a plurality of electronic elements having a through hole electrode; a resin adhesion layer formed in a predetermined area on the electronic element wafer; a transparent cover member covering the electronic element wafer and fixed on the resin adhesion layer; and a plurality of resin optical elements adhered and fixed on the transparent cover member to be integrated in such a manner to correspond to the respective plurality of electronic elements.

Abstract: The present invention provides active shutter glasses, passive glasses, and a stereoscopic image projection system, with which a viewer wearing polarizing sunglasses can enjoy improved visibility. The active shutter glasses comprises: a shutter for a right eye; and a shutter for a left eye, wherein the shutters for a right eye and for a left eye each have a liquid crystal cell and a linearly polarizing element, the linearly polarizing element is provided in each shutter on an inner side than the liquid crystal cell is, the linearly polarizing element has a transmission axis direction set in the vertical direction when the glasses are worn.

Abstract: A fiber cleaver is provided in which a circular blade can be efficiently used without increasing the workload imposed on the worker. The fiber cleaver includes a main body supporting a slider such that the slider is movable in the front-back direction. A disc-shaped circular blade configured to make a flaw in an optical fiber is rotatably provided to the slider. A columnar protrusion stands on a base of the main body. An engaging member engaging with a gear that rotates together with the circular blade is provided at the upper end of the columnar protrusion. The columnar protrusion is connected to an engaging member, which engages with the slider, with a spring interposed therebetween. The base has first to third recessed portions each anchoring the engaging member. The angle of rotation of the circular blade is changed among three angles with the position where the engaging member is anchored.