摘要:
A method for producing a replica mirror for use in an image-forming apparatus is described. The process includes a step where a mirror base plate including a mirror surface inclined with respect to the scanning axis in the image-forming apparatus is prepared. A reflective film layer is adhered to a master plate via a releasing layer. Then an adhesive material is applied to the reflective film layer. The reflective film layer is adhered to the mirror base plate via the adhesive material by pressing the mirror base plate onto the adhesive material. The reflective film layer is then transferred to the mirror base plate by peeling off the releasing layer from the reflective film layer.
摘要:
An adjustment apparatus for a light source unit installed on an optical scanning apparatus including a deflector, the light source unit including a laser light source and a condensing optical element, and leading the condensed light beam to the deflector, the adjustment apparatus including: a dividing element for dividing the light beam into a plurality of light beams in at least one of a main scanning direction and a sub-scanning direction; an imaging optical element for imaging the plurality of light beams on a light receiving element; and an adjustment mechanism for adjusting a relative position ΔX between the condensing optical element and the laser light source in a direction of an optical axis of the condensing optical element, and relative positions ΔY and ΔZ between the condensing optical element and the laser light source in directions orthogonal to the optical axis of the condensing optical element.
摘要:
Provided is an illuminator including a light source unit having a light emitting surface, and a light guiding member guiding a light beam to an original disposed on an original plate. An intersection of a center axis of a light emitting surface and the original plate is separated from a reading position of the original in a sub scanning direction, the light guiding member includes an incident surface to which the light beam emitted from the light source unit is incident, a reflection surface that reflects the incident light beam, and an exiting surface exiting the incident light beam and the reflected light beam, and in the sub scanning section, the light beam having the highest light intensity in the light beams from the light source unit is deflected at the incident surface toward the reading position of the original with respect to the center axis.
摘要:
An optical scanning device in which an optical deflector scanningly deflects a light beam emitted from a light source and in which an imaging optical system images the scanningly deflected light beam onto a scan surface. The imaging optical system includes a transmission type imaging optical element and a reflection type optical element, which are disposed in this order from the optical deflector. The reflection type optical element reflects the scanningly deflected light beam in an off-normal light path towards the scan surface. To avoid interference with the off-normal path, a contour central line of the transmission type imaging optical element is positioned at one side of a principal ray of the light beam incident on the transmission type imaging optical element, which side is remote from the off-normal light path reflected by the reflection type optical element.
摘要:
The light scanning optical apparatus for reducing registration displacement during a temperature increase, includes: multiple light source units; a common optical deflector deflectively scanning light fluxes emitted from the multiple light source units; and first and second imaging optical systems facing each other across an optical direction, sandwiching the optical deflector, and guiding the light fluxes from the optical deflector to different scanned surfaces; and a housing member housing each of the first and second imaging optical systems. Among imaging optical elements constituting those imaging optical systems, two imaging optical elements disposed adjacently to the optical deflector include main scanning direction standard positioning portions disposed at different positions in a scanning direction in those imaging optical systems. The main scanning direction standard positioning portions are positioned with respect to a standard reception portion of the housing member.
摘要:
A method for manufacturing a nanostructure is provided, in which pores (3) having diameters on the order of nanometers (nm), the diameter decreasing as in a tapered shape, can be manufactured. The method includes repeated cycles of the alternate step of anodizing Al or an Al alloy (1) to form an anodic oxide film (2) having pores (3) in an anodizing step and increasing diameter of the pore (3) in a pore-widening step, so that the diameter of the pore (3) is varied in the depth direction.
摘要:
At least one exemplary embodiment is directed to an optical scanning apparatus which includes a Vertical Cavity Surface Emitting Laser including a plurality of light-emitting portions that are spaced from each other in at least a sub-scanning direction, a first optical system including a light-condensing element that converts each of light beams from the laser into a light beam in another state; a deflector that reflects and deflects the light beams from the first optical system, and a second optical system that focuses the light beams deflected by the deflecting member on a surface to be scanned, where the second optical system includes at least an imaging optical element having an optical surface with a non-arc shape in a sub-scanning cross section.
摘要:
At least one beam emitted from a light source is deflected by a deflector, and the beam deflected by the deflector is imaged on a surface to be scanned by imaging optical system having a diffracting surface on at least one surface thereof. Of diffracted lights diffracted by the diffracting surface when the surface to be scanned is scanned by the beam, relative to diffracted light of an order used to form a spot on the surface to be scanned, the expanse of the stray light of one of unnecessary diffracted lights of the other orders undergoing surface-reflection by a refracting surface of the imaging optical system upon incidence on the surface to be scanned is designed to be wider in the sub-scanning direction than in the main scanning direction.
摘要:
A scanning optical apparatus includes incident optical system for causing at least one light beam emitted from a light source to be incident on a deflection device and image formation optical system including at least one refractive optical element and at least one diffraction optical element for imaging said at least one light beam reflected and deflected by the deflection device on a surface to be scanned. The diffraction optical element has at least one of an incident surface having a convex shape in a sub-scanning cross-section facing the deflection device and an exit surface having a convex shape in the sub-scanning cross-section facing the surface to be scanned.
摘要:
This specification discloses a plate-like polarizing element for converting light into polarized light having a plurality of units arranged along a common plane across the light, each of the units being provided with dividing means for dividing the light into reflected light and transmitted light whose planes of polarization are orthogonal to each other, varying means for varying the polarized state of at least one of the reflected light and the transmitted light to thereby make the planes of polarization of the two lights coincident with each other, and reflecting means for reflecting one of the reflected light and the transmitted light and directing it substantially in the same direction as the direction of travel of the other. The specification also discloses a polarizing conversion unit provided with such plate-like polarizing element, and a projector provided with such unit.