Abstract: Briefly, in accordance with one or more embodiments, a display projector may comprise a light source to generate a beam to be scanned, a scanning platform to scan the beam in a selected pattern to project an image on a projection surface, and a collection lens and microlens array to shape the beam to a desired beam profile without significantly increasing spot size of the beam with increasing distance from the projection surface.

Abstract: In an image forming apparatus provided with an optical beam scanning apparatus according to the invention, an optical beam scanning apparatus of an overillumination scanning optical system includes a semiconductor laser device as a light source, a pre-deflection optical system, a polygon mirror, and a post-deflection optical system, with a width of the luminous flux made incident on the polygon mirror being wider than a width of one reflecting surface forming the polygon mirror, wherein at least two sheets of flat plate for transmitting the luminous flux scanned by the polygon mirror are provided in the post-deflection optical system. In accordance with an image forming apparatus provided with an optical beam scanning apparatus according to the invention, not only a wave front aberration on a photoconductive drum can be suitably corrected, but suitable beam diameter and beam profile can be obtained on the photoconductive drum.

Abstract: A resin casting mold includes a mold member forming a cavity that includes first and second surfaces facing each other in a first direction. The mold member further includes an insert member which forms a part of a third surface and which is slidable in a second direction perpendicular to the first direction. At least one cross-sectional shape of the cavity satisfies h<A<H, where “A” is the length of the insert member in the first direction, “h” is a spacing in the first direction between a portion of the first surface closest to the insert member and a portion of the second surface closet to the insert member, and “H” is the length in the first direction on the third surface. The insert member is disposed to include a region having the spacing “h”.

Abstract: A method of setting processing data for a computer-assisted laser processing apparatus is disclosed, along with a system for setting a laser processing data. The method comprises a function of setting a three-dimensional profile of a object and a processing pattern as processing conditions, a function of generating processing data representing the processing conditions for the object, and a function of visually displaying a two dimensional representation of the processing data on a display screen and a function of setting a three-dimensional profile of a object and a processing pattern as processing conditions, wherein it is enabled to set the three-dimensional profile and the processing pattern while displaying the object in two dimensions on the display screen disposed within a processing zone.

Abstract: A video projector includes a reduced size spatial light modulator (400) that spatially modulates light from a light source (502) according to only a portion (e.g., ½) of a video frame at a time. A beam steerer (508, 600, 1600) steers spatially modulated light from the spatial light modulator to a correspond region (e.g., upper half, lower half) of a projection screen/surface (512) and one or more lenses (506, 510, 702, 802, 1002, 1008, 1100, 1300, 1502) insure that the spatially light modulator (400) is imaged onto the projection screen/surface (512).

Abstract: A disclosed method of manufacturing a surface emitting laser includes laminating a transparent dielectric layer on an upper surface of a laminated body; forming a first resist pattern on an upper surface of the dielectric layer, the first resist pattern including a pattern defining an outer perimeter of a mesa structure and a pattern protecting a region corresponding to one of the relatively high reflection rate part and the relatively low reflection rate part included in an emitting region; etching the dielectric layer by using the first resist pattern as an etching mask; and forming a second resist pattern protecting a region corresponding to an entire emitting region. These steps are performed before the mesa structure is formed.

Abstract: An optical scanning device configured to remove or sufficiently reduce ghost light includes an input optical system for directing a light beam from a light source to a deflecting surface of a deflector, and an imaging optical system for imaging a light beam scanningly deflected by the deflecting surface upon a surface to be scanned, wherein, in a sub-scan section, the light beam is incident on the deflecting surface of the deflector from an oblique direction with respect to an optical axis of the imaging optical system, wherein a light blocking member for blocking ghost light is disposed on a light path between the deflecting surface and the scanned surface, wherein an end portion of the light blocking member in the sub-scan direction is formed with a curved shape having a height in the sub-scan direction which height changes in accordance with the position in the main-scan direction.

Abstract: An optical beam scanning apparatus according to the present invention includes a pre-deflection optical system, a post-deflection optical system at least including one or plural first optical elements, plural second optical elements, a first reflection mirror which is provided in optical path between the first optical element and one of the second optical elements and reflects, on a most upstream side of the optical paths, a luminous flux on a most downstream side or a most upstream side in the sub-scanning direction among the plural luminous fluxes, and a second reflection mirror which is provided in optical path between the first optical element and another second optical element and reflects, on an optical path second from a most downstream side of the optical paths, the luminous flux on the most downstream side or the most upstream side in the sub-scanning direction among the plural luminous fluxes.

Abstract: At least a part of a first thrust-direction force generated by air resistance received by at least one surface of reflection surfaces arrayed in a rotating direction of a polygon mirror and tilted with respect to a rotation axis of the polygon mirror is canceled by a second thrust-direction force generated by air resistance received by a surface tilted with respect to the rotation axis in a direction opposite to the surface where the first thrust-direction force is generated.

Abstract: Methods are generally provided of reducing speckle of a laser beam from a laser source guided through an optical waveguide. The method includes vibrating an optical waveguide at a first point along the optical waveguide at a first frequency (e.g., having a range of about 20 kHz to about 20 GHz) for a certain distance (e.g., a distance of about 0.1 mm to about 5 cm), and directing the laser beam out of the optical waveguide from the laser source to a target. Such methods are particularly useful for scribing a thin film layer on a photovoltaic module (e.g., a cadmium telluride-based thin film photovoltaic device). Fiber optic laser systems are also generally provided for reducing speckle of a laser beam from a laser source guided through an optical waveguide.

Abstract: An F/theta lens system for focusing high-power laser radiation in a flat image field including at least two lenses. The at least two lenses are arranged sequentially in a beam path, where the at least two lenses are made from a material that is stable when exposed to laser radiation having a power of more than 1 kW, and at least one of the lenses has at least one aspherical lens surface.

Abstract: An imaging system (200) is configured to reduce perceived speckle (106) in images (201) by introducing angular diversity into consecutively projected images. The imaging system (200) includes one or more laser sources (203) that are configured to produce one or more light beams (215). A light modulator (204) scans these light beams (215) to produce images. A light translation element (206) introduces the angular diversity by physically altering a light reception location (208) on the light modulator (204) between refresh sweeps. To preserve image stability, image data (220) in a memory (218) can be correspondingly shifted.

Abstract: Providing an imaging apparatus and a microscope capable of taking two-dimensional images of a sample at a plurality of observation positions different in the optical axis direction at the same time. The apparatus includes an image-forming lens 15 that forms images of a sample 4 on a plurality of image-forming places; an optical-path-dividing member 17, 18, 19 that divides an optical path from the same area in a plane perpendicular to an optical axis of the sample 4 so as to form the plurality of image-forming places; and an optical-path-length-changing member 27, 28, 29 that is provided on at least one optical path between the plurality of image-forming places and the imaging lens 15.

Abstract: Provided is: a resin molded article for an optical element wherein high surface precision is kept since an abnormal appearance-formed portion such as a hesitation mark is effectively formed outside an optical surface without cutting off the portion and an optical surface itself can be less likely to be influenced by shrinkage with hardening such as sink; a method and device for manufacturing the same; and a scanning optical device. The resin molded article for an optical element which comprises first surface portion at a part of the surface of a resin molded base and comprises a hollow portion found by injecting a fluid into the inside of the base from the outside.

Abstract: A scanning objective lens for scanning on an observation target with light emitted from an exit end face of an optical fiber moving on a curved plane formed to be convex on an objective lens side, including first and second lens groups each having a positive power, wherein the first lens group and the second lens group are arranged in this order from the optical fiber's exit end face side, and the scanning objective lens satisfies conditions: 0.60<f1/f2<1.25??(1); and 0.95<|R1a/R1b|<2.50??(2) when f1 denotes a focal length of the first lens group, f2 denotes a focal length of the second lens group, R1a denotes a curvature radius in the first lens group nearest to the exit end face of the optical fiber, and R1b denotes a curvature radius of a lens surface in the first lens group nearest to the observation target.

Abstract: A cylindrical lens according to the present invention is a cylindrical lens of a bi-concave type in which both of a surface on which light is made incident and a surface from which the light is emitted are formed as concave surfaces, wherein, in at least one of the concave surfaces, both ends of the concave surface projecting to outer sides are formed to coincide with a plane, a normal of the plane being an optical axis of the cylindrical lens.

Abstract: An optical scanning device having: a light source for emitting a light beam; a deflector having a plurality of flat reflecting surfaces; a first optical system disposed between the light source and the deflector; and a second optical system disposed between the deflector and a photoreceptor surface, and configured such that the reflecting surfaces of the deflector and the photoreceptor surface are conjugated in a sub-scanning direction at every deflection angle in a main-scanning range.

Abstract: An optical beam scanning apparatus according to the present invention includes a light source, a pre-deflection optical system, a light deflecting device configured to separate the luminous fluxes in a sub-scanning direction for each of color components and scan the luminous fluxes against a scanning object in the main scanning direction, a post-deflection optical system configured to at least include one or plural first optical elements, plural second optical elements, plural reflection mirrors which are respectively provided on a downstream side of the second optical elements in plural optical paths excluding an optical path in which any one of the second optical elements is included and reflect luminous fluxes emitted from the second optical elements, and a position adjusting mechanism which adjusts positions of the reflection mirrors, imaging the luminous fluxes scanned by the light deflecting device on the scanning object.

Abstract: A first plastic lens and a second plastic lens constituting each imaging optical system are arranged on opposite sides of an optical deflector, so that main scanning directions of optical beams scanned by the single optical deflector become substantially parallel to each other, and the first plastic lens and the second plastic lens of at least one of the plurality of (four) imaging optical systems are formed such that secondary components at scanning positions on the (four) surfaces to be scanned are arranged in a same direction, and are molded by a same mold cavity.

Abstract: An optical scanner includes a housing, a light source, a polygon mirror, an optical device, and a holder. The housing includes a mounting portion. The light source projects light. The polygon mirror is enclosed within the housing and rotates to deflect the light projected from the light source. The optical device is disposed substantially near the polygon mirror. The holder is disposed within the housing and attached to the housing at the mounting portion, and holds the optical device in place. A distance L1 between a center of rotation of the polygon mirror and the optical device is shorter than a distance L2 between the center of rotation of the polygon mirror and the mounting portion. An image forming apparatus includes the optical scanner.

Abstract: An optical scanning device includes: a light source that emits light rays; an aperture member that adjusts a diameter of the light rays; a deflector including a plurality of reflecting surfaces that deflect the light rays; a scanning optical system that guides a light ray, of the light rays incident on the deflector and deflected by the deflector so as to be subjected to scanning onto a to-be-scanned surface; and a synchronization detector that performs synchronization detection by using a light ray, of the light rays, reflected to the aperture from the deflector is provided.

Abstract: Synchronization detecting units detect synchronization signals by receiving the light beam deflected to one side of a light source on one side of an optical deflector and receiving the light beam deflected to an opposite side of an optical axis of a scanning optical system from the light source on the other side of the optical deflector. Photodetectors that detect the synchronization signals are arranged on the opposite side of an optical axis of a scanning optical system from the light sources and on a side closer to the scanning optical system that detects the synchronization signals by receiving the light beam deflected to the light source.

Abstract: An optical scanning device includes a first optical system for guiding light beams emitted from a plurality of light emitting units to an optical deflector, and a second optical system for focusing the light beams to optically scan a surface to be scanned. At least one of the first optical system and the second optical system includes a resin lens having a diffractive surface. The diffractive surface includes a diffractive portion and a refractive portion. A power of the diffractive portion and a power of the refractive portion cancel each other.

Abstract: A plastic lens molding tool, including: a first mirror surface block; a second mirror surface block disposed opposite the first block, wherein the first mirror surface block includes a transfer surface with a curvature-radius center position that is transferable to an optical element; a first nested block arranged in contact with the first mirror surface block to form a reference rib groove on a border surface between the first mirror surface block and the first nested block; and a second nested block arranged in contact with the first mirror surface block at a side opposite the first nested block.

Abstract: An optical scanning device includes a deflecting unit that deflects a laser beam from a light source in a main-scanning direction; a scanning imaging unit that focuses the laser beam deflected by the deflecting unit on a scanning surface and scans the scanning surface with focused laser beam; and a light receiving unit that detects optical intensity of the laser beam and a synchronous timing in the main-scanning direction and that includes a plurality of photodetecting elements arranged on a substrate in the main-scanning direction.

Abstract: Briefly, in accordance with one or more embodiments, a scanned beam display comprises a light source to generate a light beam and a scanning platform to receive the light beam and to scan the light beam as a projected image. The scanned beam display further comprises first and second optics, wherein the first optic directs the light beam onto the scanning platform to be reflected through the second optic as the projected image. A reflective surface disposed on at least one of the first optic or the second optic reflect stray light away from the projected image.

Abstract: A laser light projector includes a laser beam generated by a laser light source, a scanner associated with the laser light source and having one or more moving mirrors capable of scanning the laser beam along X-Y coordinates, a scan-fail monitor and a safety-lens. The safety-lens includes at least one optical power, and is positioned and arranged for increasing the safety of the projected light within audience areas by increasing beam divergence in the audience, while keeping beam divergence low above the heads of the audience, thus allowing mirror targeting to occur.

Abstract: An optical scanning device includes a third f? lens, an adjusting bar, a pressing portion, a columnar member, and a movement restraining section. The adjusting bar is disposed parallel with a longitudinal direction of the third f? lens and has projections which are capable of pressing against the third f? lens at plural points in the longitudinal direction of the third f? lens. The pressing portion and the columnar member press the adjusting bar against the third f? lens. The movement restraining section is configured to set the pressing portion and the columnar member in a first state in which the pressing portion and the columnar member are movable in a direction parallel with the longitudinal direction of the third f? lens or in a second state in which the pressing portion and the columnar member are restrained from moving.

Abstract: The present invention provides a confocal endoscope, microscope or endomicroscope including a light source of coherent light for illuminating a sample, a beam splitter and light receiving means, wherein an incident beam of light from the light source is directed onto the beam splitter and hence onto the sample, and light returning from the sample and incident on the beam splitter is deviated or displaced by the beam splitter by a small angle or distance relative to the incident beam, and received by the light receiving means located to receive the returning light and near the light source. The invention also a method for performing confocal endoscopy or microscopy including illuminating a sample by means of an incident or excitatory beam of coherent light, and deviating or displacing light returning from the sample by a small angle or distance relative to the incident beam.

Abstract: Barcode scanning device (3) includes a rotatable polygon mirror (27) and a first fixed reflection mirror (33). The polygon mirror (27) comprises a first reflection surfaces (c), (e) and a second reflection surfaces (a), (b), (d), (f). The first reflection surfaces (c), (e) reflect laser light and thus emitting fist scanning light in a range of ±20° with respect to an optical axis (29). The second reflection surfaces (a), (b), (d), (f) reflect laser light and thus emitting second scanning light in a range larger than ±20° with respect to an optical axis (29). The first fixed reflection mirror (33) reflects the first scanning light and second scanning light forming scanning patterns in an object readable area. These scanning patterns are composed of a plurality of second scanning lines each parallel with other and first scanning lines disposed between the second scanning lines.

Abstract: A scanning optical apparatus includes: a light source; a first optical element configured to convert light emitted from the light source into a beam of light; a second optical element configured to convert the beam of light having passed through the first optical element into a linear image extending in a main scanning direction; a deflecting mirror configured to deflect the beam of light having passed through the second optical element in the main scanning direction; and a third optical element configured to convert the beam of light having been deflected by the deflecting mirror into a spot-like image and focus it on a target surface to be scanned. The third optical element is a single lens having a pair of opposite lens surfaces, and each of the pair of lens surfaces is aspheric in a main scanning plane to satisfy the formula: ? ( 1 - S k ? ( y 1 , y 2 ) f t ? ( y 1 , y 2 ) ) · h ? ( y 1 , y 2 ) ? < r e ? min 2 .

Abstract: An image forming apparatus includes a light source to emit a laser beam; a resonant scanning mirror, including a reflection surface to reflect the laser beam emitted from the light source, to scan the reflected laser beam by oscillating the reflection surface; at least one detector to detect the reflected laser beam during the scanning of the reflected laser beam, and generate a synchronizing signal each time the reflected laser beam is detected; and at least one light selection unit to restrict a path over which the reflected laser beam is incident on the at least one detector to a predetermined path.

Abstract: An optical scanning unit used for scanning a photoconductor includes a light source, a rotatable deflector, a driver, a scan lens, an optical element, a first casing, a second casing, a first cover, and a second cover. The rotatable deflector deflects a light beam generated by the light source to scan a surface of the photoconductor. The driver rotates the rotatable deflector. The scan lens converts the light beam deflected by the rotatable deflector with equiangular motion speed to a light beam having constant speed motion. The optical element is disposed along an optical path from the scan lens to the photoconductor surface. The first casing houses the light source, the rotatable deflector, and the scan lens. The second casing houses the first casing and the optical element. The first cover covers at least the first casing. The second cover covers the optical element housed in the second casing.

Abstract: An imaging lens good in mass-productivity, compact, low in manufacturing cost, good in aberration performance is provided by effectively correcting aberrations without greatly varying the variation of the thickness of a curing resin. An imaging device having such an imaging lens and a portable terminal are also provided. A third lens (L3) has a flat surface on the object side, a convex surface near the optical axis on the image side, and a concave aspheric surface around the peripheral portion within the region where a light beam passes. Therefore, it is possible to reduce the other optical aberrations such as distortion and simultaneously to design the imaging lens so that the astigmatism takes on a maximum value at the outermost portion. Hence, the resolutions at low to middle image heights are high. In addition, such a shape does not cause a large variation of the thickness of the third lens (L3) from the region along the axis to the periphery.

Abstract: The image projection apparatus includes a laser light source, and a scanning device scanning a light flux from the laser light source in horizontal and vertical directions at mutually different frequencies on a projection surface. A condition of ( B + C ) ? X 2000 ? A ? 7 ? L ? L - X ? is satisfied. A represents a diameter of an exit pupil when viewed from a projection surface side, L represents a distance from the exit pupil to an image formation position of the light flux, X represents a distance from the exit pupil to an output measurement position, B and C respectively represent vertical and horizontally scanning angular subtenses of a scan pulse formed by the light flux, the scan pulse having a pulse length equal to or shorter than 18 microseconds and passing through a measurement aperture placed at the output measurement position.

Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.

Abstract: A second scanning lens has a refracting power in a sub-scanning direction, and an optical element-deforming unit that changes a position of the center of curvature of the second scanning lens in the sub-scanning direction to a direction substantially parallel to the sub-scanning direction. Further, a function Cs(y) of a curvature in the sub-scanning direction of the scanning lens deformed by the optical element-deforming unit in the scanning lens is set to have only one extreme value within a mirror surface region on a first surface of the lens.

Abstract: A surface-emitting laser device configured to emit laser light in a direction perpendicular to a substrate includes a p-side electrode surrounding an emitting area on an emitting surface to emit the laser light; and a transparent dielectric film formed on an outside area outside a center part of the emitting area and within the emitting area to lower a reflectance to be less than that of the center part. The outside area within the emitting area has shape anisotropy in two mutually perpendicular directions.

Abstract: At least one of a coupling lens and a cylindrical lens has a diffraction lens surface having a ring-band structure with a height h between adjacent ring-bands. The diffraction lens surface has an area A having a shape similar to that of the ring-band structure with a height h?, where h?h?. The ring-band structure has a function of correcting a fluctuation in focal position of the scanning beam on the scanning surface, and the area A has a function of expanding a focal depth of a light spot on the scanning surface.

Abstract: A light source device includes a light source, a coupling lens, a first opening plate, a second opening plate, a photoreceptor, a package member, a cover glass, a half mirror, and a light source control device. In relation to a main-scanning corresponding direction and a sub-scanning corresponding direction, divergence angles ?m and ?s of a light beam output from the light source, emission angles ?m1 and ?s1 of a light beam passing through an opening portion A, and emission angles ?m2 and ?s2 of a light beam passing through an opening portion B satisfy relationships |(?m1-?m2)/?m|?0.085 and |(?s1-?s2)/?s|?0.085.

Abstract: A light source device includes: a light source; a package member that holds the light source; a splitting element that is arranged on an optical path of a light beam output from the light source and splits the light beam into a first light beam and a second light beam; and a cap member that holds the splitting element so that the surface of the splitting element is inclined with respect to a plane orthogonal to a traveling direction of the light beam output from the light source and that is attached to the package member to seal the light source.

Abstract: An optical scanning device includes: a light source; a polygon scanner that deflects a light beam output from the light source; and various types of optical elements for focusing the light beam deflected by the polygon scanner onto a desired position on a surface to be scanned, wherein a hole or a thin-walled portion that is provided on an arrangement surface of an optical housing on which the polygon scanner and an optical element having power in a sub-scanning direction are arranged, wherein the hole or a thin-walled portion extends along a main-scanning direction, and is provided near to the optical element having power in the sub-scanning direction between the polygon scanner and the optical element having power in the sub-scanning direction.

Abstract: Lens pairs include: a first lens to form an intermediate image, which is an inverted image of an object, on an intermediate image plane; and a second lens to form an image of the object, which is an inverted image of the intermediate image, on the image plane. A ratio of SO1 (the distance between the first principal plane of the first lens and the object plane) to SI1 (the distance between the second principal plane of the first lens and the intermediate image plane) is substantially the same as the ratio of SI2 (the distance between the second principal plane of the second lens and the imaging plane) to SO2 (the distance between the first principal plane of the second lens and the intermediate image plane). The distance between the first lens and the object plane is different from a distance between the second lens and the imaging plane.

Abstract: Optical apparatus includes a semiconductor substrate and an edge-emitting radiation source, mounted on a surface of the substrate so as to emit optical radiation along an axis that is parallel to the surface. A reflector is fixed to the substrate in a location on the axis and is configured to reflect the optical radiation in a direction that is angled away from the surface. One or more optical elements are mounted on the substrate so as to receive and transmit the optical radiation reflected by the reflector.

Abstract: Barcode scanning device (3) includes a rotatable polygon mirror (27) and a first fixed reflection mirror (33). The polygon mirror (27) comprises a first reflection surfaces (c), (e) and a second reflection surfaces (a), (b), (d), (f). The first reflection surfaces (c), (e) reflect laser light and thus emitting first scanning light in a range of ±20° with respect to an optical axis (29). The second reflection surfaces (a), (b), (d), (f) reflect laser light and thus emitting second scanning light in a range larger than ±20° with respect to an optical axis (29). The first fixed reflection mirror (33) reflects the first scanning light and second scanning light forming scanning patterns in an object readable area. These scanning patterns are composed of a plurality of second scanning lines each parallel with other and first scanning lines disposed between the second scanning lines.

Abstract: An optical scanning device includes a housing, a laser light source outputting a laser light, a polygon mirror arranged in an arrangement space and deflecting the laser light to scan a predetermined object with the laser light while rotating, a polygon motor rotating the polygon mirror, a control board arranged in the arrangement space and controlling the polygon motor, and a flow-control member arranged in the arrangement space and guiding an airflow generated by a rotation of the polygon mirror to an outside of the arrangement space to circulate the airflow within the housing.

Abstract: A surface emitting laser element includes a p-side spacer layer; an n-side spacer layer; and an active layer disposed between the p-side spacer layer and the n-side spacer layer. The p-side spacer layer includes an undoped region adjacent to the active layer in which no p-type dopant is contained. The entire n-side spacer layer is doped with an n-type dopant.

Abstract: A disclosed surface-emitting laser element includes an emission region configured to emit a laser beam and a high reflectance region including a first dielectric film having a first refractive index and a second dielectric film having a second refractive index differing from the first refractive index where the first dielectric film and the second dielectric film are stacked within the emission region to provide high reflectance. In the surface-emitting laser element, the high reflectance region is formed in a region including a central portion of the emission region and is configured to include shape anisotropy in two orthogonal directions in a plane in parallel with the emission region.

Abstract: An optical beam scanning device includes a polygon mirror 80 in which tilt angles with respect to a rotation axis of the polygon mirror 80 of respective plural reflecting surfaces are set to angles corresponding to photoconductive members associated with the respective reflecting surfaces, a post-deflection optical system A1 that guides light beams reflected and deflected by the respective plural reflecting surfaces in the polygon mirror 80 to the photoconductive surfaces of the photoconductive members corresponding to the respective reflecting surfaces, and a pre-deflection optical system 7a that shapes the light from the light source to be a light beam of a predetermined sectional shape and guides the light beam to the polygon mirror 80, the pre-deflection optical system 7a guiding the light from the light source to the polygon mirror 80 through an optical path that passes, in the main scanning direction, on an optical axis of the post-deflection optical system A1 and passes, in the sub-scanning direction,

Abstract: A light source apparatus includes a semiconductor laser which emits a laser beam, a coupling lens which converts the laser beam emitted from the semiconductor laser into a light flux, and a cylindrical lens into which the light flux is allowed to come from the coupling lens. The cylindrical lens is integrally formed with a lens portion, an outer circumferential portion which is arranged at an outer circumference of the lens portion, and a support portion which extends from the outer circumferential portion toward the semiconductor laser and which supports the coupling lens.