Abstract: A semiconductor laser device 1 comprises a stack-type semiconductor laser element 2 which is formed by piling up along a Y axis direction orthogonal to an X axis direction a plurality of stacks of array-type semiconductor laser elements 3 including a plurality of light emitting parts that are aligned in the X axis direction, where the X axial pitch P1 of the light emitting parts 21 and the Y axial pitch P2 of the light emitting parts 21 satisfy a relational expression of P1<P2, and a second optical lens 5 which outputs beams that have been outputted from the light emitting parts 21 after rotating them by 90 degrees.

Abstract: A MCP 1 according to the present invention is one in which outer circumferential glass 5 is disposed around channel glass 3 that is provided with a plurality of channels 7 in a long and thin hole shape and is formed in a plate shape. This channel glass 3 contains 35 to 55% of SiO2, 0 to 5% of Al2O3, 25 to 46% of PbO, 0.5 to 10% of &Sgr;(Li2O+Na2O+K2O), 0.1 to 8% of &Sgr;(Rb2O+Cs2O), 0 to 5% of &Sgr;(MgO+CaO+SrO+BaO), 0.1 to 7% of ZrO2, and 0 to 5% of Bi2O3 (all the above % are wt %). With such a composition, a sufficient glass network structure is formed in the channel glass 3. Moreover, the channel glass 3 can be sufficiently restricted from becoming porous, and moisture can be restricted from being adsorbed thereto. As results of these, a change with time, such as a “warp” can be sufficiently restricted from being generated even in a high-humidity environment.

Abstract: The optical lens pertaining to the present invention comprises two first optical member arrays in which a plurality of columnar optical members that act on the light incident from light emitting components are arrayed in a state of &agr;° inclination, and a second optical member that is columnar in shape and made of a transparent material, and inside of which the two first optical member arrays are embedded in the columnar axial direction thereof, wherein the material of which the columnar optical members are made has a refractive index that is higher than that of the transparent material of the second optical member. Because the first optical member arrays are integrally embedded in the second optical member, they can be disposed all at once in their proper locations.

Abstract: A radiation image sensor 10 comprises two optical members 12, 14; a scintillator 18 deposited on entrance end faces 12a, 14a of the optical members 12, 14; a plurality of light-guiding optical components 22; and a plurality of CCDs 20. Each of the optical members 12, 14 is an optical member in which several millions/cm2 of optical fibers are disposed parallel to each other and integrally molded, whereas the optical fibers have an axis forming an acute angle with the entrance end face 12a, 14a. The two optical members 12, 14 are arranged such that the optical fibers respectively constituting each of the optical members 12, 14 have a gap therebetween widening from the entrance end face 12a, 14a side to the exit end face 12b, 14b side. Respective side faces 12c, 14c of optical members 12, 14 are formed with ground surfaces 12d, 14d in which the respective side faces 12c, 14c of optical members 12, 14 are ground against each other.

Abstract: The method of manufacturing an optical lens in accordance with the present invention includes a drawing optical lens preform preparing step of preparing a drawing optical lens preform comprising a first curved face part, formed aspheric in one side face thereof, functioning as an optically active part, and a second curved face part, formed in a side face opposite from the first curved face part, having a curvature smaller than that of the first curved face part; a drawing step of drawing the drawing optical lens preform to a desirable outer diameter; and an optical lens preparing step of preparing an optical lens 1 by slicing the drawn drawing optical lens preform. Since the second curved face part is formed, distortions can be restrained from occurring due to the drawing in this manufacturing method.

Abstract: An optical lens of this invention comprises a first optical member array, in which a plurality of columnar optical members acting on each ray of light emitted from each light-emitting device are arranged in an array, and a second optical member, formed into a columnar shape from transparent material and within which the first optical member array is embedded along the column axis direction; the refractive index of the constituent material of the plurality of columnar optical members is higher than that of the transparent material of the second optical member. Because the first optical member array is embedded in the second optical member in an integral structure, it is possible to easily place the lens in a position such that each incident light ray is acted upon.

Abstract: The optical lens pertaining to the present invention comprises two first optical member arrays in which a plurality of columnar optical members that act on the light incident from light emitting components are arrayed in a state of &agr;° inclination, and a second optical member that is columnar in shape and made of a transparent material, and inside of which the two first optical member arrays are embedded in the columnar axial direction thereof, wherein the material of which the columnar optical members are made has a refractive index that is higher than that of the transparent material of the second optical member. Because the first optical member arrays are integrally embedded in the second optical member, they can be disposed all at once in their proper locations.

Abstract: An optical lens manufacturing method according to the present invention is characterized by including the first optical member preform forming step of forming a first optical member preform 40 formed of a first transparent material into a columnar shape and having a first optical acting portion 11 that forms a curved surface on a side surface thereof, the primary drawing step of drawing the first optical member preform formed by the first optical member preform forming step, and the first optical member forming step of slicing the first optical member preform drawn 40 in the primary drawing step, thus forming a first optical member 2 with a columnar shape. According to this optical lens manufacturing method, the shape of the optical lens, and particularly the shape of the first optical acting portion 11, can be determined at the stage of the preform before primary drawing. Thus, the preform can be machined with a sufficiently large size, and machining operations can be performed simply and accurately.

Abstract: A radiation image sensor 10 comprises two optical members 12, 14; a scintillator 18 deposited on entrance end faces 12a, 14a of the optical members 12, 14; a plurality of light-guiding optical components 22; and a plurality of CCDs 20. Each of the optical members 12, 14 is an optical member in which several millions/cm2 of optical fibers are disposed parallel to each other and integrally molded, whereas the optical fibers have an axis forming an acute angle with the entrance end face 12a, 14a. The two optical members 12, 14 are arranged such that the optical fibers respectively constituting each of the optical members 12, 14 have a gap therebetween widening from the entrance end face 12a, 14a side to the exit end face 12b, 14b side. Respective side faces 12c, 14c of optical members 12, 14 are formed with ground surfaces 12d, 14d in which the respective side faces 12c, 14c of optical members 12, 14 are ground against each other.

Abstract: The present invention relates to an electron multiplier including a structure which effectively prevents an electric field from leaking to the front side of an MCP due to a voltage applied to the MCP, facilitates an operation of attaching/detaching the MCP, and prevents the MCP from being damaged and so forth during the operation. The electron multiplier includes an MCP as electron multiplying means, and an outer electric field shield member for accommodating the MCP. The electric field shield cap includes a body portion surrounding at least a side face of the MCP. The electron multiplier further includes a structure by which, while the MCP is held by the outer electric field shield member and an inner electric field shield member accommodated in the outer electric field shield member, the outer electric field shield member is attached to a base of the electron multiplier so as to facilitate the operation of attaching/detaching the MCP.