Exposure head, exposure unit, method of manufacturing exposure unit, light receiving head, light receiving unit, and method of manufacturing light receiving unit

An exposure unit comprising:

• a first exposure head including a first substrate, a plurality of first light emitting devices, a first optical system, a first pedestal, a first coupler, and a first base member,
• the first light emitting devices being disposed side by side in a first direction on the first substrate and each emitting a first light beam,
• the first optical system facing the first light emitting devices in a second direction that intersects with the first direction, and performing imaging of each of the first light beams emitted by the respective first light emitting devices,
• the first pedestal being attached to the first substrate,
• the first coupler being provided at a first position, in the first pedestal, based on a position at which the imaging performed by the first optical system is performed,
• the first base member supporting the first substrate and the first optical system;
• and
• a second exposure head including a second substrate, a plurality of second light emitting devices, a second optical system, a second pedestal, a second coupler, and a second base member,
• the second light emitting devices being disposed side by side in the first direction on the second substrate and each emitting a second light beam,
• the second optical system facing the second light emitting devices in the second direction, and performing imaging of each of the second light beams emitted by the respective second light emitting devices,
• the second pedestal being attached to the second substrate,
• the second coupler being provided at a second position, in the second pedestal, based on a position at which the imaging performed by the second optical system is performed, and being fit into the first coupler,
• the second base member supporting the second substrate and the second optical system.

An exposure head comprising:

• a plurality of light emitting devices that are disposed side by side in a first direction and each emit a light beam;
• an optical system that faces the light emitting devices in a second direction, and performs imaging of each of the light beams emitted by the respective light emitting devices, the second direction intersecting with the first direction;
• a coupler provided at a position, in a base member, based on a position at which the imaging performed by the optical system is performed;
• and
• the base member that supports the light emitting devices, the optical system, and the coupler.

A light receiving unit comprising:

• a first light receiving head including a plurality of first light receiving devices, a first optical system, a first coupler, and a first base member,
• the first light receiving devices being disposed side by side in a first direction,
• the first optical system facing the first light receiving devices in a second direction that intersects with the first direction, and performing imaging of, on the first light receiving devices, respective first light beams entering the first optical system from outside,
• the first coupler being provided at a first position, in the first base member, based on a position at which the imaging performed by the first optical system is performed,
• the first base member supporting the first light receiving devices, the first optical system, and the first coupler;
• and
• a second light receiving head including a plurality of second light receiving devices, a second optical system, a second coupler, and a second base member,
• the second light receiving devices being disposed side by side in the first direction,
• the second optical system facing the second light receiving devices in the second direction, and performing imaging of, on the second light receiving devices, respective second light beams entering the second optical system from the outside,
• the second coupler provided at a second position, in the second base member, based on a position at which the imaging performed by the second optical system is performed, and being fit into the first coupler,
• the second base member supporting the second light receiving devices, the second optical system, and the second coupler.

A method of manufacturing an exposure unit, the method comprising:

• preparing a first base member that supports a plurality of first light emitting devices and a first optical system, the first light emitting devices being disposed side by side in a first direction and each emitting a first light beam, the first optical system facing the first light emitting devices in a second direction that intersects with the first direction, and performing imaging of each of the first light beams emitted by the respective first light emitting devices;
• providing a first coupler at a first position, in the first base member, based on a position at which the imaging performed by the first optical system is performed;
• preparing a second base member that supports a plurality of second light emitting devices and a second optical system, the second light emitting devices being disposed side by side in the first direction and each emitting a second light beam, the second optical system facing the second light emitting devices in the second direction, and performing imaging of each of the second light beams emitted by the respective second light emitting devices;
• providing a second coupler at a second position, in the second base member, based on a position at which the imaging performed by the second optical system is performed;
• and
• joining together the first base member and the second base member with each other by fitting the first coupler and the second coupler into each other.

A method of manufacturing an exposure unit, the method comprising:

• preparing a first base member that supports a first substrate on which a plurality of first light emitting devices are provided and a first optical system, the first light emitting devices being disposed side by side in a first direction and each emitting a first light beam, the first optical system facing the first light emitting devices in a second direction that intersects with the first direction, and performing imaging of each of the first light beams emitted by the respective first light emitting devices;
• attaching a first pedestal to the first substrate;
• providing a first coupler at a first position, in the first pedestal, based on a position at which the imaging performed by the first optical system is performed;
• preparing a second base member that supports a second substrate on which a plurality of second light emitting devices are provided and a second optical system, the second light emitting devices being disposed side by side in the first direction and each emitting a second light beam, the second optical system facing the second light emitting devices in the second direction, and performing imaging of each of the second light beams emitted by the respective second light emitting devices;
• attaching a second pedestal to the second substrate;
• providing a second coupler at a second position, in the second pedestal, based on a position at which the imaging performed by the second optical system is performed;
• and
• joining together the first substrate and the second substrate with each other by fitting the first coupler and the second coupler into each other.

A method of manufacturing a light receiving unit, the method comprising:

• preparing a first base member that supports a plurality of first light receiving devices and a first optical system, the first light receiving devices being disposed side by side in a first direction, the first optical system facing the first light receiving devices in a second direction that intersects with the first direction, and performing imaging of, on the first light receiving devices, respective first light beams entering the first optical system from outside;
• providing a first coupler at a first position, in the first base member, based on a position at which the imaging performed by the first optical system is performed;
• preparing a second base member that supports a plurality of second light receiving devices and a second optical system, the second light receiving devices being disposed side by side in the first direction, the second optical system facing the second light receiving devices in the second direction, and performing imaging of, on the second light receiving devices, respective second light beams entering the second optical system from the outside;
• providing a second coupler at a second position, in the second base member, based on a position at which the imaging performed by the second optical system is performed;
• and
• joining together the first base member and the second base member with each other by fitting the first coupler and the second coupler into each other.

A light receiving head corresponding to each of a plurality of light receiving heads that are joined together with each other and thereby configure a light receiving unit, the light receiving head comprising:

• a plurality of light receiving devices that are disposed side by side in a first direction;
• an optical system that faces the light receiving devices in a second direction intersecting with the first direction, and performing imaging of, on the light receiving devices, respective light beams entering the optical system from outside;
• a coupler that is provided at a position, in the base member, based on a position at which the imaging performed by the optical system is performed;
• and
• a base member that supports the light receiving devices, the optical system, and the coupler.