Provided is an optical apparatus including a line sensor that includes plural detection portions arranged in a lateral direction, the detection portions including plural light-receiving elements arranged in a line shape in a longitudinal direction, and a direction corresponding to the lateral direction being set as a first direction and a direction corresponding to the longitudinal direction being set as a second direction in a surface perpendicular to an optical axis of light which forms an image on the line sensor, and a reduction optical system that reflects light from an original document and guides the reflected light to the detection portion, and includes plural curved-surface mirrors that have curvatures in the first direction and the second direction as a whole.

Separately providing a shift register for performing serial-to-parallel conversion on a BD signal and a shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal increases the scale of a circuit for adjusting a writing start position in the scanning direction of a light beam. Therefore, the shift register for performing serial-to-parallel conversion on a BD signal and the shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal are configured as a common register.

A reading device includes an emission unit that emits light; a first reflecting unit having a first reflecting surface that reflects the light emitted by the emission unit toward a document; a second reflecting unit having a second reflecting surface that reflects the light reflected by the first reflecting unit and specularly reflected by the document; a first support unit that supports the first reflecting unit and the second reflecting unit and fixes a relative position and a relative orientation between the first reflecting surface and the second reflecting surface; and a second support unit that supports the first support unit such that at least one of a position and an orientation of the first support unit is adjustable.

An image-reading apparatus includes: a light-receiving unit that receives reflected light from a recording material on which an image is formed; and multiple light-reflecting members that reflect the reflected light from the recording material toward the light-receiving unit. At least one light-reflecting member of the multiple light-reflecting members reflect the reflected light multiple times.

A reading device includes an emission unit that emits light; a first reflecting unit having a first reflecting surface that reflects the light emitted by the emission unit toward a document; a second reflecting unit having a second reflecting surface that reflects the light reflected by the first reflecting unit and specularly reflected by the document; a first support unit that supports the first reflecting unit and the second reflecting unit and fixes a relative position and a relative orientation between the first reflecting surface and the second reflecting surface; and a second support unit that supports the first support unit such that at least one of a position and an orientation of the first support unit is adjustable.

An image processing apparatus includes a reading unit and a controller. The reading unit radiates light to a target from two directions with different angles and reads images of the target. The controller performs, when controlling the reading unit to acquire the two images of the target, control such that a resolution of the image read by radiating the light to the target from one of the two directions is lower than a resolution of the image read by radiating the light to the target from the other one of the two directions.

An image reading unit includes an illumination portion, a reading portion, a casing, and a reflection member including a reflecting surface. The casing is provided with an opening. The reflection member is held outside of the opening of the casing so that at least a part of the reflecting surface is exposed to the inside of the casing through the opening.

In accordance with an embodiment, a lens mirror array includes a plurality of optical elements integrally connected in a first direction. Each optical element includes an incident side lens surface through which light enters the optical element, a ridge located at an edge of the incident side lens surface, a reflection surface on which light incident on the incident side lens surface is reflected, an exit side lens surface through which light reflected by the reflection surface exits the optical element, and a groove surrounding the reflection surface except for a portion adjacent to the ridge, the portion adjacent to the ridge connecting to an adjacent optical element in the plurality of optical elements.

An image inspection apparatus includes: an illumination part that emits light on an inspection target; a reading part that is arranged with, in one or more dimensions, elements that detect light reflected by the inspection target, the reading part reading an entire width of the inspection target; and a hardware processor that inspects a characteristic of the inspection target, wherein a light guide member is provided at a position where light regularly reflected by the inspection target passes, the light guide member is arranged to allow an optical path of light incident on the reading part via the light guide member to be parallel to an optical path of light incident on the reading part without via the light guide member, and the hardware processor inspects a gloss distribution of the inspection target, and inspects a density distribution of the inspection target.

An image processing apparatus includes a reading unit and a controller. The reading unit radiates light to a target from two directions with different angles and reads images of the target. The controller performs, when controlling the reading unit to acquire the two images of the target, control such that a resolution of the image read by radiating the light to the target from one of the two directions is lower than a resolution of the image read by radiating the light to the target from the other one of the two directions.