摘要:
A light guide propagates light emitted by a light source in the long axis direction. A fluorescent material layer surrounds the outer periphery of the light guide except for an opening along the long axis direction. A light reflecting pattern is provided on the outer periphery of the light guide opposite to the fluorescent material layer. The fluorescent material layer captures light reflected by the light reflecting pattern and exiting from the outer periphery of the light guide, reflects part of the light, and emits light of different wavelengths. The light emitted by the fluorescent material layer is transmitted into the light guide, and the light having entered therein from the end and the light emitted by the fluorescent material layer are emitted to the object from a portion of the light guide that is exposed in the opening.
摘要:
An irradiation device increasing the lighting depth and facilitating the assembling is provided. A transparent bar-shaped light guide having LEDs disposed near ends thereof includes a first prism group and a first reflector, and, a second prism group and a reflector which are provided so as to extend in a lengthwise direction and which diffuse and reflect light. The light guide includes a first light outgoing area emitting reflected light as primary light Lm, and a second light outgoing area emitting reflected light as secondary light Ls. The first light outgoing area includes a plane portion forming a flat surface. A plane mirror reflects the secondary light Ls in a direction overlapping the primary light Lm in a read area.
摘要:
A light source device includes: a light-emitting part; a light guide including in its center a columnar part whose central axis direction is a lengthwise direction, that guides light input into an end face from the light-emitting part, and outputs light from a side face of the columnar part; a light guide holder that covers an end of the light guide except for at least part of the end face; and a support part, including a through-hole that penetrates from one face to another face formed therein, that holds an end of the light guide holder on a side of a first opening on the one face of the through-hole so as to allow sliding in the lengthwise direction, and light is input into the light guide via a second opening on the other face of the through-hole.
摘要:
An irradiation device increasing the lighting depth and facilitating the assembling is provided. A transparent bar-shaped light guide having LEDs disposed near ends thereof includes a first prism group and a first reflector, and, a second prism group and a reflector which are provided so as to extend in a lengthwise direction and which diffuse and reflect light. The light guide includes a first light outgoing area emitting reflected light as primary light Lm, and a second light outgoing area emitting reflected light as secondary light Ls. The first light outgoing area includes a plane portion forming a flat surface. A plane mirror reflects the secondary light Ls in a direction overlapping the primary light Lm in a read area.
摘要:
A light source device includes: a light-emitting part; a light guide including in its center a columnar part whose central axis direction is a lengthwise direction, that guides light input into an end face from the light-emitting part, and outputs light from a side face of the columnar part; a light guide holder that covers an end of the light guide except for at least part of the end face; and a support part, including a through-hole that penetrates from one face to another face formed therein, that holds an end of the light guide holder on a side of a first opening on the one face of the through-hole so as to allow sliding in the lengthwise direction, and light is input into the light guide via a second opening on the other face of the through-hole.
摘要:
An image sensor includes a light source; a bar-shaped light-guiding element having a first light-emitting section, which propagates light from the light source and irradiates an document from an oblique direction, and a second light-emitting section emitting light in a carrying direction of the document; a lens converging the light reflected from the document; a sensor receiving the light passed through the lens; a reflector disposed on the opposite side of the light-guiding element, by reflecting the light from the second light-emitting section such that an optical path of the light emitted from the second light-emitting section is located between the lens and the document, and irradiating the document from an oblique direction; and first and second light-scattering layers formed in areas opposed to the first and the second light-emitting sections, respectively, in the light-guiding element.
摘要:
A light source device includes: a rod-shaped light source or an array light source extending in a main scanning direction; a reflector that is placed opposite the rod-shaped light source or the array light source, extends in the main scanning direction, and reflects light output from a side face of the rod-shaped light source or the array light source; and a plurality of reflector supports that are arranged at an interval along the main scanning direction and support the reflector.
摘要:
A light source device includes: a rod-shaped light source or an array light source extending in a main scanning direction; a reflector that is placed opposite the rod-shaped light source or the array light source, extends in the main scanning direction, and reflects light output from a side face of the rod-shaped light source or the array light source; and a plurality of reflector supports that are arranged at an interval along the main scanning direction and support the reflector.
摘要:
An image reading apparatus includes a light source, an imaging optics system, an image pickup device unit, a memory, and a processor. The imaging optics system condenses scattered light reflected on an object to be imaged to form condensed light as an image. The imaging optics system includes plural cells arranged in a main scanning direction and each of which is an independent imaging optics system. Each of the cells includes a telecentric optics system at the document side. Two rows of cells are arranged in a sub-scanning direction. The cells in the rows are arranged zigzag in the main scanning direction to complement a formed image by the cells in the sub-scanning direction. The image pickup device unit is arranged to correspond to each cell. The processor can form a document image by reconstructing and combining image information stored in the memory into an image.
摘要:
An illuminating apparatus includes a columnar light guide, a board having a light source fastened on one surface thereof, and a holder. The holder is formed with a through-hole into which an end of the light guide in the columnar center axis direction is fitted to hold the light guide, and a catch that catches and holds the board with the light source facing the end surface of the light guide in the columnar center axis direction in the through-hole.