Abstract:
An optical scanner includes an optical housing, which houses a light source, an aperture stop, a condensing lens and a rotary deflector, light from the light source entering into the rotary deflector via the aperture stop and the condensing lens, and the light deflected by the rotary deflector scanning a target to be irradiated, a fastener, which fastens the condensing lens to the optical housing, and a fastener attachment portion to which the fastener is attached, the fastener attachment portion being disposed in a downstream side of the condensing lens in a traveling direction of the light in the housing.
Abstract:
A mounting device capable of mounting two objects of different sizes is disclosed. The mounting device includes a mounting member including a first end, a second end opposite to the first end, a mounting portion, a securing piece between the first end and the second end, and an installing plate including a first installing portion and a second installing portion. The mounting member is secured to the first installing portion and the second installing portion. When the mounting portion and the securing piece are engaged with the first installing portion, the first end is adapted to abut a first object. When the mounting portion and the installing portion are engaged with the second installing portion, the second end is adapted to abut a second object of a different size from a size of the first object.
Abstract:
In an image reader, an optical scanning unit reads an original image on an original document sheet. In the optical scanning unit, a lighting device is detachably attached to a housing to emit light toward the original document sheet. The housing houses a reading device to read the light reflected by the original document sheet. A shield member is detachably attached to the housing to shield the reading device from the lighting device to form a space for the reading device inside the housing. A slit is provided in the shield member to guide the light reflected by the original document sheet to the space for the reading device. A second positioner is provided on the shield member to engage a first positioner provided in the housing to position the reading device with respect to the lighting device.
Abstract:
A document reading unit has an image sensor mounted in a box-like support base so that a document can be read by the image sensor through an opening in the support base. A contact glass disposed in the opening covers the image sensor and supports the document while it is being read by the image sensor. Support members coupled to the contact glass are detachably fixed to the support base by fixing screws. The image sensor has two rows of spaced-apart line sensors with the line sensors in one row staggered relative to those in the other row, and the support members are arranged between adjacent pairs of line sensors in each row of line sensors. The contact glass and support members are removable as a unit from the support base.
Abstract:
An optical element mounting method includes: illuminating ultraviolet light onto a polymer optical waveguide device; under the ultraviolet light illumination, capturing, by an image pickup device, the polymer optical waveguide device including a light incident/exiting position of a waveguide core; and judging, from a difference between bright and dark in a captured image, that a portion brighter than other portions or a portion darker than other portions is the light incident/exiting position of the waveguide core.
Abstract:
In an image reader, an optical scanning unit reads an original image on an original document sheet. In the optical scanning unit, a lighting device is detachably attached to a housing to emit light toward the original document sheet. The housing houses a reading device to read the light reflected by the original document sheet. A shield member is detachably attached to the housing to shield the reading device from the lighting device to form a space for the reading device inside the housing. A slit is provided in the shield member to guide the light reflected by the original document sheet to the space for the reading device. A second positioner is provided on the shield member to engage a first positioner provided in the housing to position the reading device with respect to the lighting device.
Abstract:
An optical element mounting method includes: illuminating ultraviolet light onto a polymer optical waveguide device; under the ultraviolet light illumination, capturing, by an image pickup device, the polymer optical waveguide device including a light incident/exiting position of a waveguide core; and judging, from a difference between bright and dark in a captured image, that a portion brighter than other portions or a portion darker than other portions is the light incident/exiting position of the waveguide core.
Abstract:
A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image in a main scanning direction. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens which is disposed between the document mount and the sensor unit and focuses the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit which is lengthened in a sub-scanning direction, faces the document mount and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit.
Abstract:
The invention relates to an image reading apparatus and includes: scanning unit including a light source; a focusing mirror which reflects light from the light source on a reflecting surface portion; and a mirror holder which fixes the focusing mirror on fixing portions formed at both ends of the mirror holder, wherein, when the scanning unit is moved to read image information, the focusing mirror is formed such that the fixing portion is smaller than the reflecting surface portion in at least one of strength and rigidity.
Abstract:
A lens block according to the present invention includes a lens cylinder; and at least one lens accommodated in the lens cylinder and dividing a space in the lens cylinder into a first space and a second space, wherein the lens cylinder includes at least one hole into which a tool for removing the at least one lens from the lens cylinder is inserted, wherein the at least one lens is pressed into the lens cylinder from either one of the first space and the second space, and the at least one hole is formed on the other of the first space and the second space, and wherein the at least one hole is provided in a position that enables the inserted tool to contact the at least one lens through the at least one hole.