发明名称 |
Illuminating device, image reading apparatus including the illuminating device, and image forming apparatus including the image reading apparatus |
摘要 |
An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided.;An LED array and a reflective plate are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member is disposed on the side of the LED array. The light-guiding member includes a direct emission unit disposed between an illumination range y centered on a document reading position and the LED array and an indirect emission unit disposed between the reflective plate and the LED array, a light incidence face of the direct emission unit and a light incidence face of the indirect emission unit are disposed at mutually different position around the LED array, and the LED array is disposed on a side of an interior angle formed by the light incidence faces. |
申请公布号 |
US9097830(B2) |
申请公布日期 |
2015.08.04 |
申请号 |
US201414292502 |
申请日期 |
2014.05.30 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
Suto Yasuhiro;Yoshimoto Mitsuharu;Okada Tomohiko;Yamanaka Hisashi;Fukutome Shohichi;Nakanishi Kenji |
分类号 |
H04N1/04;F21V8/00;H04N1/028;G03B27/54;G03G15/00;H04N1/00;H04N1/10;H04N1/193 |
主分类号 |
H04N1/04 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. An illuminating device comprising:
a light-emitting element; a substrate on which the light emitting element is mounted; a reflective member; and a light-guiding member that guides light emitted from the light-emitting element toward an irradiated object and the reflective member, the illuminating device illuminating the irradiated object with light that has been emitted from the light-emitting element and guided to the irradiated object by the light-guiding member and with light that has been emitted from the light-emitting element, guided by the light-guiding member and reflected to the irradiated object by the reflective member, wherein the light-emitting element and the reflective member are disposed to sandwich a path through which light reflected by the irradiated object passes, and the light-guiding member is disposed on a side of the light-emitting element relative to the path, the light-guiding member includes a direct emission portion that is disposed between the irradiated object and the light-emitting element, and through which light emitted from the light-emitting element to the irradiated object is transmitted, and an indirect emission portion that is disposed between the reflective member and the light-emitting element, and through which light emitted from the light-emitting element to the irradiated object via the reflective member is transmitted, the substrate comprises a white portion on a surface of the substrate, and the white portion is provided at least between the light-emitting element and the reflective member, and reflects the light emitted from the light-emitting element. |
地址 |
Osaka JP |