Abstract: A thermal enhanced structure comprising a packaged electronic device and a heat sink that is removably attached thereto. The thermal enhanced structure includes a plastic ball grid array (PGBA) with an electronic chip, a plastic mold cover, and a heat spreader with a plurality of spaced apart securing studs positioned and caulked at a periphery edge thereof. The mold cover, the heat spreader and studs are molded and embedded with one another to form a single unit with improved torque strength and heat dissipation. The single molded unit and the plastic ball grid array are secured together by an adhesive material. Then the heat sink can be easily and removably attached to the molded single unit by fastening elements to the molded studs, thereby allowing more efficient controllable forces or pressures to be applied as the mechanical fastening elements are removably attached to the molded studs to thereby prevent stress and damage to the PBGA package.

Abstract: The object-side lens group G1 comprises two lenses: in order from its object side, an object-side positive meniscus lens L11 that is convex on its object side and has positive refracting power and an object-side negative meniscus lens L12 that is convex on its object side and has negative refracting power, and the image-side lens group G2 comprises three lenses: in order from its object side, an image-side negative lens L21, an image-side first positive lens L22 and an image-side second positive lens L23. The image-side negative lens L21 and the image-side first positive lens L23 adjacent thereto form together a cemented doublet, and the following conditions (1), (2) and (3) are satisfies. 2.3?|f1/f|?5.3 ??(1) 0.8?f2/f?1.0 ??(2) 0.55?L/f?0.

Abstract: Disclosed is a pattern inspection apparatus which easily and highly accurately detects a profile error (deviation) of at least one pattern having a cross section with projections and recesses. The inspection apparatus for the pattern 32 is for detecting the profile error of the pattern having a cross section with a projection and a recess. This inspection apparatus includes a plate 30 on which a pattern is mounted, light sources 40, 42 and 44 which can change angles of illuminating light emitted onto the pattern, within a range of 15 to 75 degrees with reference to the top surface of the pattern, and photodetectors 52 and 54 which can receive reflected light from the pattern at an angle within a range of 15 to 75 degrees with reference to the top surface of the pattern. The inspection apparatus is characterized by that the profile error of the pattern is detected based on an amount of the reflected light from an edge between the top surface and the side surface of each of the patterns.

Abstract: A vapor-compression heat exchange system for facilitating cooling of an electronics rack. The system includes employing an evaporator coil mounted to an outlet door cover, which is hingedly affixed to an air outlet side of the rack, as well as refrigerant inlet and outlet plenums and an expansion valve also mounted to the outlet door cover and in fluid communication with the evaporator coil. The evaporator coil includes at least one heat exchange tube section and a plurality of fins extending therefrom. Respective connect couplings connect the inlet and outlet plenums in fluid communication with a vapor-compression unit which includes a compressor and a condenser disposed separate from the outlet door cover. The vapor-compression unit exhausts heat from refrigerant circulating therethrough.

Abstract: The invention relates to a rear converter lens apparatus to obtain a lens system having a focal length longer than that of a master lens device by the mounting of the master lens device, and a taking system comprising the same. A converter lens portion consists of, in order from an object side that is the master lens device side, a first lens group of positive refracting power, a second lens group of positive refracting power and a third lens group of negative refracting power. Between the respective lens groups there is a spacing. The first and second lens groups are located such that of axial air spaces in the converter lens portion, an air space between the first lens group and the second lens group is largest. One each lens group comprises a positive lens element and a negative lens element.

Abstract: A laminate circuit board package having a thermal heat spreader or heatslug thermally coupled to an electrical component such as an integrated circuit (IC) in order to dissipate heat within the IC by forming a heatpath away from the IC. The heat spreader is preferably formed of high performance thermal materials and thermally coupled to the IC. The heat spreader is configured to provide an enhanced thermal passage that efficiently facilitates the flow of heat away from the chip. The thermal heat spreader is coupled to the IC via one or more holes formed in the laminate board to efficiently disperse heat away from the chip and onto an attached motherboard.

Abstract: A thermal enhanced structure comprising a packaged electronic device and a heat sink that is removably attached thereto. The thermal enhanced structure includes a plastic ball grid array (PGBA) with an electronic chip, a plastic mold cover, and a heat spreader with a plurality of spaced apart securing studs positioned and caulked at a periphery edge thereof. The mold cover, the heat spreader and studs are molded and embedded with one another to form a single unit with improved torque strength and heat dissipation. The single molded unit and the plastic ball grid array are secured together by an adhesive material. Then the heat sink can be easily and removably attached to the molded single unit by fastening elements to the molded studs, thereby allowing more efficient controllable forces or pressures to be applied as the mechanical fastening elements are removably attached to the molded studs to thereby prevent stress and damage to the PBGA package.

Abstract: In a surge protection device 40 (40-1 or 40-2) used for a surge protection apparatus, a gas arrester 41 is connected in series with a varister group consisting of a plurality of varisters 42-1 to 42-5 which have high withstand capacity and are connected in parallel to one another and a discharge resistor 43 is connected between both electrodes of the varister group. Besides, since the varister voltages are set higher than the peak value of the AC power supply voltage, the varisters 42-1 to 42-5 are normally insulated from a power supply circuit by the gas arrester 41. Even if an abnormal voltage is applied, since an operating voltage of the varisters 42-1 to 42-5 is set higher than a peak value of the AC power supply voltage, AC power supply current will not flow. Charges stored in the varisters 42-1 to 42-5 are released quickly through the resistor 43, making it possible to prevent the gas arrester 41 from restriking.

Abstract: Disclosed is a pattern inspection apparatus which easily and highly accurately detects a profile error (deviation) of at least one pattern having a cross section with projections and recesses. The inspection apparatus for the pattern 32 is for detecting the profile error of the pattern having a cross section with a projection and a recess. This inspection apparatus includes a plate 30 on which a pattern is mounted, light sources 40, 42 and 44 which can change angles of illuminating light emitted onto the pattern, within a range of 15 to 75 degrees with reference to the top surface of the pattern, and photodetectors 52 and 54 which can receive reflected light from the pattern at an angle within a range of 15 to 75 degrees with reference to the top surface of the pattern. The inspection apparatus is characterized by that the profile error of the pattern is detected based on an amount of the reflected light from an edge between the top surface and the side surface of each of the patterns.

Abstract: A projection zoom lens includes, in order from an enlargement side, a first lens unit G1 of negative refracting power, a second lens unit G2 of positive refracting power and a third lens unit G3 of positive refracting power. Focusing is implemented by movement of the first lens unit G1 alone. The first lens unit satisfies condition (1) with respect to its movement. 0.003<?d/|f1|<0.030??(1) Here f1 is the focal length of the first lens unit, and ?d is the maximum displacement of the first lens unit as measured from a wide-angle end position thereof upon zooming from the wide-angle end to the telephoto end with a projected image focusing at a constant distance.

Abstract: A resin composition comprising: a tri-functional or more (meth)acrylate having an alkoxysilyl group; and at least one of a metal oxide fine particle having a hydroxyl group on a surface thereof and a metalalkoxide, wherein the tri-functional or more (meth)acrylate having the alkoxysilyl group and the at least one of the metal oxide fine particle having the hydroxyl group on the surface thereof and the metal alkoxide covalently bind, and the production method thereof.

Abstract: Disclosed is a pattern inspection apparatus which easily and highly accurately detects a profile error (deviation) of at least one pattern having a cross section with projections and recesses. The inspection apparatus for the pattern 32 is for detecting the profile error of the pattern having a cross section with a projection and a recess. This inspection apparatus includes a plate 30 on which a pattern is mounted, light sources 40, 42 and 44 which can change angles of illuminating light emitted onto the pattern, within a range of 15 to 75 degrees with reference to the top surface of the pattern, and photodetectors 52 and 54 which can receive reflected light from the pattern at an angle within a range of 15 to 75 degrees with reference to the top surface of the pattern. The inspection apparatus is characterized by that the profile error of the pattern is detected based on an amount of the reflected light from an edge between the top surface and the side surface of each of the patterns.

Abstract: It is an object of the present invention to provide a siloxane-modified hyperbranched polyimide which has more excellent electric properties (low dielectric property), gas permeability, mechanical properties (low modulus), surface properties (adhesiveness) and the like while maintaining thermal stability, mechanical strength, chemical resistance and processability and the like intrinsic to polyimide and which may be variously functionalized and can be utilized advantageously in industrial applications. A siloxane structure represented by the following structural formula (1) is introduced into a three-dimensional structured hyperbranched polyimide molecule. (wherein R1 represents a hydrocarbon group having from 1 to 6 carbon atoms, and n indicates an integer of from 1 to 50).

Abstract: There is disclosed a camera having a first imaging medium which acquires subject image data from a subject light flux transmitted through a photographing lens; an optical path branching member which is disposed in an image pickup optical path of the first imaging medium to branch an optical path of the subject light flux; a primary image forming surface on which the subject light flux branched by the optical path branching member forms an image; and a second imaging medium which picks up the subject image formed on the primary image forming surface. When the present camera satisfies at least one of a plurality of optical conditions, the amount of shading of the light flux guided to the second imaging medium is reduced.

Abstract: It is an object of the present invention to provide a polyimide-based hybrid material which is industrially and advantageously utilized because of having better gas permeability, electric characteristics, heat resistance, mechanical strength, and the like as compared with the conventional polyimide-based hybrid materials, while keeping chemical resistance, forming characteristics (process characteristics), and the like inherently possessed by polyimide. Provided is a hyperbranched polyimide-based hybrid material constituted of an organic-inorganic polymer hybrid, wherein the organic-inorganic polymer hybrid has a hyperbranched polyimide moiety and an inorganic oxide moiety which are combining each other via covalent bond and constituting a composite structure.

Abstract: The invention is directed to a large aperture zoom lens of the improved optical performance, serving as a standard zoom lens especially suitable to a single-lens reflex camera. The zoom lens employs a zooming system with four groups of lenses having positive, negative, positive and positive refractive powers, respectively, and implements on the order 75 degrees of a photographing angle of field at a wide-angle end of the range, approximately 2.8 of F number throughout the zooming range, and about 2.8 of a variable power of magnification while still dimensioned as close as the standard zoom lens for the single-lens reflex camera (i.e., about 95 mm in total lens length and ?67 mm in filter diameter on the side closer to an objective lens).

Abstract: The invention concerns a projection zoom lens comprising, in order from an enlargement side, a first lens unit of negative refracting power, a second lens unit G2 of positive refracting power and a third lens unit G3 of positive refracting power. Upon zooming from a wide-angle end to a telephoto end, the first lens unit G1 and the second lens unit G2 move and the third lens unit G3 remains fixed. The third lens unit G3 is located in front of a light bulb I, and transmits incident light rays from an illumination optical system and light rays reflected from the light bulb. Focusing is implemented by movement of the first lens unit G1 alone. The first lens unit satisfies condition (1) with respect to its movement. 0.003<?d/|f1|<0.

Abstract: A compact and light-weighted projection lens system that is capable of projecting an image at an angle as wide as 75 degrees with sufficient field angle and brightness as represented by F number of approximately 2.4, that is capable of effectively correcting chroic aberration of magnification and aberration of distortion and exhibiting optical stability against environmental variations, and that is suitable for obtaining an extraordinarily fine image by the magnification and projection.

Abstract: Disclosed is a pattern inspection apparatus which easily and highly accurately detects a profile error (deviation) of at least one pattern having a cross section with projections and recesses. The inspection apparatus for the pattern 32 is for detecting the profile error of the pattern having a cross section with a projection and a recess. This inspection apparatus includes a plate 30 on which a pattern is mounted, light sources 40, 42 and 44 which can change angles of illuminating light emitted onto the pattern, within a range of 15 to 75 degrees with reference to the top surface of the pattern, and photodetectors 52 and 54 which can receive reflected light from the pattern at an angle within a range of 15 to 75 degrees with reference to the top surface of the pattern. The inspection apparatus is characterized by that the profile error of the pattern is detected based on an amount of the reflected light from an edge between the top surface and the side surface of each of the patterns.

Abstract: The invention is dedicated to a compact and lightweight high zoom ratio lens which is configured in 4 lens group zoom system with a deployment of positive, negative, positive, and positive refraction lens groups in order, being approximately 75 degree in shooting angle of view at a wide-angle end, approximately f/3 to 4 at the wide-angle end, and approximately f/6 to 7 at a telephoto end so as to implement an enhanced variable zoom power up to approximately 10. The zoom lens includes first to fourth lens groups each comprised of a plurality of lenses, the lens groups having respective refractive indices of positive, negative, positive, and positive levels in order from the closest to an object.