Abstract: The over-field type optical scanner includes a first imaging optical system disposed between a light source and a rotating polygon mirror for forming, on one surface of the rotating polygon mirror, a linear image with a width larger than a width along a main scanning direction of the one surface of the rotating polygon mirror; and a second imaging optical system composed of a curved mirror for focusing, on a scan surface, a light beam having been reflected by the rotating polygon mirror. The first imaging optical system includes a first conversion optical system for converting the light beam emitted from the light source into a divergent light beam with respect to the main scanning direction and into a convergent light beam with respect to the sub scanning direction; and a second conversion optical system having a refracting power in the main scanning direction.

Abstract: An object of the present invention is to provide a light-absorbing member capable of preventing the reflection of light at the interface with air and absorbing the light substantially completely. A light-absorbing member has a substrate (101) made of a material capable of absorbing light of which reflection is to be prevented, and an antireflective structure (102) including structural elements, the structural elements forming an array with a period shorter than the wavelength of the light.

Abstract: A single lens element used for converting a divergent pencil of rays, radiated from a light source, into a predetermined convergent state, wherein the single lens element is made from a resin and has a positive optical power due to a refraction effect and a positive optical power due to a diffraction effect, the diffraction effect is based on a diffraction structure formed on at least one of an incident side surface and an exit side surface of the single lens element, and the following expressions are satisfied: 0.1<NA<0.3 0.4<T/f<0.75 2.2<fr/f<3 here, f is a focal length of the entire single lens element, fr is a focal length due to the refraction effect of the single lens element, T is a thickness of the single lens element on an optical axis, and NA is a numerical aperture of a single lens element at an incident side.

Abstract: An illumination optical system includes a light source for emitting a plurality of different colors of light, a plurality of rotating optical scanners, and a plurality of scanning lenses. Each of the optical scanners has a reflecting surface that is formed helically around a cylindrical body. The different colors of light enter the respective reflecting surfaces in the direction parallel to the rotation axis, are reflected therefrom, and pass through the scanning lenses, so that each color of light is magnified and then scans the region to be illuminated sequentially. This makes it possible to provide an illumination optical system that can improve scanning linearity, lower noise because of its reduced wind resistance, and achieve reduction in the cost and power consumption.

Abstract: A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, a conical antireflective structure of a pitch of 0.15 ?m (periodic structure having conical convexities) is formed. This corresponds to a antireflective structure having a pitch of a wavelength or less in the ultraviolet band (150 nm to 400 nm) at the time when ultraviolet light is used as incident light.

Abstract: A cleansing apparatus comprising: a table 3 for supporting a semiconductor substrate 30 horizontally; a high frequency solution injector 20 capable of injecting a solution to the upper surface 30a and the side surface 30c of the semiconductor substrate 30 supported by the table 3 with the application of vibration at high frequency; a cover 2 capable of tightly enclosing the semiconductor substrate 30 supported by the table 3; and pressure reducing means 18 for reducing the pressure in a space, in which the semiconductor substrate 30 is enclosed with the cover 2. The semiconductor substrate can be cleansed efficiently at a low cost and kept in clean state after the cleansing until it is dried.

Abstract: A single lens element used for converting a divergent pencil of rays, radiated from a light source, into a predetermined convergent state, wherein the single lens element is made from a resin and has a positive optical power due to a refraction effect and a positive optical power due to a diffraction effect, the diffraction effect is based on a diffraction structure formed on at least one of an incident side surface and an exit side surface of the single lens element, and the following expressions are satisfied: 0.1<NA<0.3 0.4<T/f<0.75 2.2<fr/f<3 here, f is a focal length of the entire single lens element, fr is a focal length due to the refraction effect of the single lens element, T is a thickness of the single lens element on an optical axis, and NA is a numerical aperture of a single lens element at an incident side.

Abstract: An illumination optical system includes a light source for emitting a plurality of different colors of light, a plurality of rotating optical scanners, and a plurality of scanning lenses. Each of the optical scanners has a reflecting surface that is formed helically around a cylindrical body. The different colors of light enter the respective reflecting surfaces in the direction parallel to the rotation axis, are reflected therefrom, and pass through the scanning lenses, so that each color of light is magnified and then scans the region to be illuminated sequentially. This makes it possible to provide an illumination optical system that can improve scanning linearity, lower noise because of its reduced wind resistance, and achieve reduction in the cost and power consumption.

Abstract: An apparatus for cleaning a whole substrate by ejecting a cleaning liquid from a nozzle while rotating the substrate, the apparatus comprising: two or more linear reciprocating driving sources capable of generating outputs independently of one another; a rotation shaft; two or more cam mechanisms for converting the outputs into rotating forces; two or more sets of rotation columns fixed to the rotation shaft rotatably about their respective axes to horizontally support the substrate and sandwich or release the side surface of the substrate in cooperation with one another along with their rotation; two or more transfer members capable of transferring the rotating force to the sets of rotation columns in conjunction with the cam mechanisms, respectively; and a stopper causing the rotation of the cam mechanisms to be related to the rotation of the rotation shaft.

Abstract: An optical scan apparatus includes an optical deflection unit (4), an image formation optical system (3), and curved surface mirrors (7a to 7d). Light fluxes from the image formation optical system (3) come onto the deflection surface (4a) of die optical deflection unit (4) in an oblique direction. Light fluxes from the optical deflection unit (4) come onto the curved surface mirrors (7a to 7d) in an oblique direction. When a boundary is a plane (6) including a normal at the center of the deflection surface (4a) and parallel to the main scan direction, the curved surface mirrors (7a to 7d) are arranged in the same space divided by the boundary and the scan speeds of fluxes scanning the surfaces to be scanned (8a to 8d) are almost identical. Thus, it is possible to obtain identical drive frequencies of the light sources (1a to 1d), thereby simplifying the circuit.

Abstract: A reflection of unnecessary light, which should be prevented, can be suppressed, and occurrence of stray light can be reduced using a member having an antireflection structure, comprising a plate-like portion 2, and an aperture portion 3 formed in the plate-like portion 2, wherein the antireflection structure having an aspect ratio of 1 or more and comprising structural elements arranged in an array form at a period smaller than the shortest wavelength of light, the reflection of which should be prevented, is formed on an inner wall 4 of the aperture portion 3.

Abstract: An inexpensive cleaning apparatus capable of exerting cleaning power on a side surface of a substrate at the same level as on a main surface thereof, and capable of changing an angle of a jetting device during cleaning without so changing a jet distance. The apparatus 1 comprise a table 10 for rotatably horizontally supporting the substrate 70, a jetting device 30 for jetting cleaning fluid onto the substrate, an arm 16 holding the device at the first end, and a shaft 17 holding the second end of the arm rotatably around a horizontal axis for guiding the arm in a horizontal direction, and is characterized in that the first end of the arm is positioned apart from an axis line of the second end when seen through the axis line of the second end.

Abstract: A current application apparatus includes a pair of electrodes, mounts the pair of electrodes on the head by uses of an electrode mounting member, and applies a specific current to the head through the pair of electrodes. The pair of electrode is mounted by the electrode mounting member on one side of a lateral center of the head in such a manner that the following conditions are satisfied. One electrode of the pair is located on a skin located backward of an ear, which is positioned on the one side of the lateral center of the head, and the other electrode of the pair is located on a skin of the head located on the one side of the lateral center of the head. The specific current applied to the head has one of a white noise waveform and a 1/f noise waveform.

Abstract: The invention provides a polypropylene based resin composition, which has good moldability on injection molding and which is excellent in its flow mark appearance as well as weld appearance on molding, and suitable for injection-molded articles such as exterior parts of automobiles, and also provides a moldability modifier used for the composition. The invention is a moldability modifier for a polypropylene based resin, which comprises at least one of a propylene homopolymer and a propylene random polymer having die swell ratio of 1.5 to 2.5 and ratio (Q value: Mw/Mn) of 7 to 13 of the weight average molecular weight (Mw) to the number average molecular weight (Mn) measured by gel permeation chromatography (GPC). The moldability modifier is mixed with a propylene-ethylene block copolymer, an ethylenic or styrenic elastomer, an inorganic filler, etc. to prepare a polypropylene based resin composition.

Abstract: A surface foreign matter inspection device is provided with which the NA can be enlarged with a simple configuration, and a shortening of the time required for foreign matter inspection as well as a high detection sensitivity can be achieved. The device is provided with an optical detection means 6 that irradiates light from an radiation optical system onto the surface of an object under inspection on a stage, reflects light scattered by foreign matter on the object under inspection and turns the reflected light into parallel light, condenses the parallel light with a condensing lens, and detects the condensed light, as well as an information processing device 100 for processing an electrical signal from the optical detection means 6 and position information regarding the foreign matter on the object under inspection 4.

Abstract: In a lens barrel for holding an imaging optical system that forms an optical image of an object, the imaging optical system comprises an object side lens unit 4 onto which light ray from the object is incident and a reflective optical element 5 having a reflecting surface 5a for bending the light ray exiting from the object side lens unit 4, and in an imaging state, the object side lens unit 4 is held in a manner movable in a direction of the light ray from the object, and while in an accommodated state, the reflective optical element 5 is escaped to an escape position different from a position located in the imaging state.

Abstract: An illumination optical system includes a light source for emitting a plurality of different colors of light, a plurality of rotating optical scanners, and a plurality of scanning lenses. Each of the optical scanners has a reflecting surface that is formed helically around a cylindrical body. The different colors of light enter the respective reflecting surfaces in the direction parallel to the rotation axis, are reflected therefrom, and pass through the scanning lenses, so that each color of light is magnified and then scans the region to be illuminated sequentially. This makes it possible to provide an illumination optical system that can improve scanning linearity, lower noise because of its reduced wind resistance, and achieve reduction in the cost and power consumption.

Abstract: An image reading device comprising a rotary polygon mirror (6) for scanning a light flux from a light source (1), an imaging optical system (4) for forming on a reflection plane of the mirror (6) a linear image larger than the width in a main scanning direction of the one reflection plane, and a curved-face mirror (7), wherein the light source (1), the imaging optical system (4), the rotary polygon mirror (6) and the curved-face mirror (7) are disposed in different positions in a sub-scanning direction, a light flux from the imaging optical system (4) shines obliquely onto the polygon mirror (6), and a light flux reflected off the mirror (6) beams obliquely onto the curved-face mirror (7). Since one curved-face mirror can beam a light flux reflected from the rotary polygon mirror onto a surface to be scanned and the rotary polygon mirror having a small inscribed radius and many reflection planes can be used, satisfactory optical performance and high-speed feature can be realized.

Abstract: By a first image forming optical system (42a to 42d), a plurality of light beams from light sources (41a to 41d) form linear images on a common deflecting surface (46) of an optical deflector (44). Light beams reflected off the optical deflector (44) are reflected by a plurality of curved surface mirrors (45a to 45d) and are allowed to scan over photosensitive members (4a to 4d), respectively. The plurality of curved surface mirrors (45a to 45d) are disposed on the same side with respect to a plane that includes a normal line at a center of the deflecting surface (46) and is parallel to a main scanning direction. Further, curved surfaces of the plurality of curved surface mirrors (45a to 45d) vary in shape. Thus, a tandem type color image forming apparatus that achieves low cost and has excellent optical performance and an optical scanning device that is used favorably in the color image forming apparatus can be provided.

Abstract: A portable device for collecting information about a human body is adapted to be worn on the human body and is capable of periodically performing cognitive faculty tests during daily life to discern fluctuations in the memory faculty of a wearer. The device displays a problem of cognitive tests on a display unit, and a wearer inputs an answer with an input unit. The wearer's response time is clocked with a clock unit, and the answer and the response time are stored in a memory unit in time sequence by control of a control circuit. The device can include a detection unit for detecting a living body signal to enable research on the relationship between behavioral patterns or temperamental trends and memory faculties, and the like.