Light receiving unit

A light receiving unit comprising:

• semiconductor substrates each having a shape that has a pair of sides parallel to each other;
• a sensor substrate on which the semiconductor substrates are mounted in a line with gaps provided therebetween, the gaps having a same length;
• first pixels disposed on each of the semiconductor substrates, the first pixels being arrayed linearly in parallel with one side of the pair of sides parallel to each other;
• and
• second pixels disposed on the semiconductor substrate, the second pixels being separated away from the first pixels by a predetermined interpolation pixel distance in a direction perpendicular to the one side and arrayed linearly in parallel with the one side,
• wherein
• the second pixels include:
• overlapping pixels disposed on sub-scanning lines that extend in the direction perpendicular to the one side and pass through outermost pixels among the first pixels, the outermost pixels being located at outermost ends of a linear array of the first pixels;
• and
• interpolation pixels disposed on other sub-scanning lines that pass through missing pixels that are disposed farther away from a center of the linear array of the first pixels than the outermost pixels,
• the pair of sides that are parallel to each other of each of the semiconductor substrates is a long side and a short side and the semiconductor substrates each further have a pair of slanted sides that are symmetric with respect to a straight line that extends in a direction perpendicular to the long side, the straight line being an axis of symmetry of the pair of slanted lines,
• the first pixels of one of two adjacent semiconductor substrates among the semiconductor substrates are arrayed linearly along the long side and the first pixels of the other one of the two adjacent semiconductor substrates are arrayed linearly along the short side, and
• the second pixels are arrayed linearly, in parallel with the long side, from both end portions near to the slanted sides of the other one of the two adjacent semiconductor substrates in a direction away from the slanted sides.

A light receiving unit comprising:

• semiconductor substrates each having a shape that has a pair of sides parallel to each other;
• a sensor substrate on which the semiconductor substrates are mounted in a line with gaps provided therebetween, the gaps having a same length;
• first pixels disposed on each of the semiconductor substrates, the first pixels being arrayed linearly in parallel with one side of the pair of sides parallel to each other;
• and
• second pixels disposed on the semiconductor substrate, the second pixels being separated away from the first pixels by a predetermined interpolation pixel distance in a direction perpendicular to the one side and arrayed linearly in parallel with the one side,
• wherein
• the second pixels include:
• overlapping pixels disposed on sub-scanning lines that extend in the direction perpendicular to the one side and pass through outermost pixels among the first pixels, the outermost pixels being located at outermost ends of a linear array of the first pixels;
• and
• interpolation pixels disposed on other sub-scanning lines that pass through missing pixels that are disposed farther away from a center of the linear array of the first pixels than the outermost pixels,
• the pair of sides that are parallel to each other of each of the semiconductor substrates is a long side and a short side and the semiconductor substrates each further have a pair of slanted sides that are symmetric with respect to a straight line that extends in a direction perpendicular to the long side, the straight line being an axis of symmetry of the pair of slanted lines,
• the first pixels are arrayed linearly along the short side of each of the semiconductor substrates,
• the second pixels are arrayed linearly, in parallel with the long side, from both end portions near to the slanted sides in a direction away from the slanted sides, and
• two adjacent semiconductor substrates among the semiconductor substrates are arranged to be vertically inverted with respect to each other in a sub-scanning direction.