According to an embodiment, a laser processing apparatus, that perform laser processing on an object with laser light, includes a plurality of optical heads. The optical heads each includes a laser head unit that emits a plurality of laser light beams in an arranged manner in a predetermined direction, and an optical system that focuses the emitted plurality of laser light beams on the object conveyed relatively with respect to the laser head unit in a conveying direction intersecting the predetermined direction. The optical heads each includes a first optical head group and a second optical head group in which the optical heads are adjacent to each other in the predetermined direction. The first optical head group and the second optical head group are adjacent to each other in the conveying direction and arranged while being shifted from each other by a predetermined length in the predetermined direction.

A focus adjustment mechanism for adjusting a focus position of a printhead includes a rotatable pin that is rotatable around a pin axis. The rotatable pin includes a cam section located having a surface whose radial distance from the pin axis varies around its perimeter, and a gripping feature. An adjustment plate includes a gripping feature and is adapted to fit over and engage with the gripping feature of the rotatable pin such that the adjustment plate rotates together with the rotatable pin. A fastener fastens the adjustment plate to a support structure when the adjustment plate is positioned in a desired orientation. The printhead includes a frame feature which is pulled firmly against the cam section of the rotatable pin such that as the rotatable pin is rotated the frame feature rides on the surface of the cam section thereby adjusting the focus position of the printhead.

A scanning unit includes a light source controllable to emit a light beam; a scanning mirror having a plurality of reflective surfaces, the scanning mirror receiving the light beam from the light source and deflecting at least portions of the light beam along a scan direction; and a collimator lens disposed between the light source and the scanning mirror, the collimator lens having a light incident surface that is spherical and a light exit surface that is aspheric such that the light beam, after passing through the collimator lens, is diverged by the collimator lens so as to be incident on at least two reflective surfaces of the scanning mirror.

A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.

There is provided an optical print head including: a substrate on which a plurality of light emitting elements is mounted on one surface, and a plurality of electronic components including a driver IC that drives the plurality of light emitting elements is mounted on the other surface opposite to the one surface; and a lens array including a plurality of lenses that respectively condenses light emitted from the plurality of light emitting elements to a photosensitive drum. The substrate includes a plurality of connecting pieces obtained by cutting a connecting portion with another substrate in a longitudinal direction of the substrate, and at least one of the connecting pieces is provided at a position corresponding to a region of the substrate where the driver IC is to be mounted in the longitudinal direction of the substrate.

An optical head comprises a substrate on which optical elements are arranged in a main scanning direction, a lens unit that transmits light emitted from the optical elements or light entering the optical elements, and a holder that holds the lens unit. The holder has a sidewall extending in the main scanning direction. The sidewall has a hole at a position facing the lens unit. A fixing member is provided in the hole. The fixing member fixes the lens unit to the sidewall.

A pointer includes a case housing an LED device and including a light emission hole through which light from the device is emitted to an external space, a first plate between the device and the light emission hole and including a first light passage hole that allows passage of the light from the device, and a second plate between the first plate and the light emission hole and including a second light passage hole that allows passage of the light having passed through the first light passage hole. The light passage holes and the light emission hole are located on a central axis of the device. The device and the first and second plates are disposed such that H/2<S<H, where H denotes a distance between the device and the first plate, and S denotes a distance between the first and second plates.

Optical scanner and electrophotographic image forming device are provided. The optical scanner includes a light source; and a first optical unit, a deflection apparatus, and an f-θ lens, which are sequentially arranged along a primary optical axis direction of a light beam emitted from the light source. The light beam emitted from the light source is focused onto a scanning target surface after sequentially passing through the first optical unit, the deflection apparatus, and the f-θ lens. Optical scanning directions of the light beam emitted from the light source include a primary scanning direction and a secondary scanning direction which are perpendicular to each other, and along the primary scanning direction, the f-θ lens satisfies following expressions: SAG1>0, SAG2>0, and 0<(SAG1+SAG2)/d<0.8.

A light-emitting component includes a substrate and a light-emitting element provided on the substrate and configured to emit light in a direction intersecting a surface of the substrate. The light-emitting element includes a thyristor having an opening through which light is emitted, and an inner surface of the opening is covered with a light shield that suppresses transmission of light.

There is provided an optical print head including: a substrate on which a plurality of light emitting elements is mounted on one surface, and a plurality of electronic components including a driver IC that drives the plurality of light emitting elements is mounted on the other surface opposite to the one surface; and a lens array including a plurality of lenses that respectively condenses light emitted from the plurality of light emitting elements to a photosensitive drum. The substrate includes a plurality of connecting pieces obtained by cutting a connecting portion with another substrate in a longitudinal direction of the substrate, and at least one of the connecting pieces is provided at a position corresponding to a region of the substrate where the driver IC is to be mounted in the longitudinal direction of the substrate.