-
公开(公告)号：US09350893B2
公开(公告)日：2016-05-24
申请号：US13914402
申请日：2013-06-10
Applicant: PFU Limited
Inventor： Keisuke Kimura
CPC classification number: H04N1/02815 , H04N1/02895 , H04N1/10 , H04N1/193 , H04N1/40056 , H04N2201/0436
Abstract: An overhead image reading apparatus includes an image-capturing unit that captures an image of a medium to be read placed on a placement surface from above, a light source capable of irradiating the medium with light, and a brightness controller that gradually alters brightness of the light source at least when the light source is turned on or when the light source is turned off. The overhead image reading apparatus may gradually alter the brightness by duty control on current supplied to the light source. Or, the overhead image reading apparatus may gradually alter the brightness by controlling a current value supplied to the light source. Alternatively, the overhead image reading apparatus may include a variable aperture between the light source and the placement surface to gradually alter the brightness by controlling an opening area of the aperture.
Abstract translation: 顶置图像读取装置包括图像捕获单元，其从上方捕获放置在放置表面上的要读取的介质的图像，能够用光照射介质的光源，以及逐渐改变亮度的亮度控制器 至少在光源被接通时或当光源被关闭时光源。 架空图像读取装置可以通过对提供给光源的电流进行占空比控制来逐渐改变亮度。 或者，架空图像读取装置可以通过控制提供给光源的电流值来逐渐改变亮度。 或者，架空图像读取装置可以包括光源和放置表面之间的可变孔径，以通过控制孔径的开口面积来逐渐改变亮度。
-
公开(公告)号：US09435509B2
公开(公告)日：2016-09-06
申请号：US14296372
申请日：2014-06-04
Applicant: Stanley Electric Co., Ltd. , PFU LIMITED
Inventor： Yosuke Mizuki , Keisuke Kimura , Masanari Takabatake , Sousuke Aono
Abstract: A linear light source apparatus is provided, being configured to convert light emitted from one light emitting element to light extended linearly, and output thus converted light. There is a lens that diffuses light flux within a predetermined region including the optical axis of the light emitting element, out of the light incident from the light emitting element, at a predetermined diffusion angle in the second direction (x-direction). The light is made to converge with respect to the first direction (y-direction). This converts the light from one light emitting element to light extended linearly and outputs the converted light. As for the second direction (x-direction), it is possible to make the light flux sparse in the predetermined region, and in the region outside thereof, the light flux is rendered to be dense. Therefore, a distribution of light quantity in the longitudinal direction (x-direction) is implemented by controlling the light flux density, upon employing the linear light source apparatus as a light source of the image reading apparatus.
Abstract translation: 提供了一种线性光源装置，其被配置为将从一个发光元件发射的光线性地转换成光，并将其转换成光。 存在在第二方向（x方向）上以预定的扩散角将光束从发光元件入射的光中扩散到包含发光元件的光轴的预定区域内的透镜。 使光线相对于第一方向（y方向）会聚。 这将来自一个发光元件的光线转换为线性延伸的光，并输出转换的光。 对于第二方向（x方向），可以使光束在预定区域中稀疏，并且在其外侧的区域中，光通量变得致密。 因此，通过使用线性光源装置作为图像读取装置的光源，通过控制光通量密度来实现纵向（x方向）的光量分布。
-
公开(公告)号：US08941889B2
公开(公告)日：2015-01-27
申请号：US13861347
申请日：2013-04-11
Applicant: PFU Limited
Inventor： Keisuke Kimura
CPC classification number: H04N1/00519 , H04N1/02815 , H04N1/10 , H04N1/19594 , H04N2201/02497 , H04N2201/0436
Abstract: An overhead image reading apparatus 1 includes: an image-capturing unit 22 that captures an image of a medium S to be read from above when the medium S to be read is placed on a placement surface 2; a light source 21 that irradiates the medium S to be read with light when the image-capturing unit 22 captures the image of the medium S to be read; and a light blocking portion 25 that blocks light above an upper-end position of light emitted from the light source 21. As a result, the user 100 can be prevented from seeing light from the light source 21 with his/her eyes and from being dazzled with an unpleasant feeling by light from the light source 21 during reading on the medium S to be read.
Abstract translation: 顶置图像读取装置1包括：图像拍摄单元22，当要读取的介质S放置在放置表面2上时，捕获从上方读取的介质S的图像; 当图像拍摄单元22捕获要读取的介质S的图像时，照射用于读取的介质S的光源21; 以及阻挡从光源21发射的光的上端位置以上的光的遮光部25。结果，可以防止用户100用眼睛看到来自光源21的光，并且不会 在读取要读取的介质S上时，来自光源21的光感到令人不愉快的感觉。
-
公开(公告)号：US20140354867A1
公开(公告)日：2014-12-04
申请号：US14296372
申请日：2014-06-04
Applicant: Stanley Electric Co., Ltd. , PFU LIMITED
Inventor： Yosuke Mizuki , Keisuke Kimura , Masanari Takabatake , Sousuke Aono
Abstract: A linear light source apparatus is provided, being configured to convert light emitted from one light emitting element to light extended linearly, and output thus converted light. There is a lens that diffuses light flux within a predetermined region including the optical axis of the light emitting element, out of the light incident from the light emitting element, at a predetermined diffusion angle in the second direction (x-direction). The light is made to converge with respect to the first direction (y-direction). This converts the light from one light emitting element to light extended linearly and outputs the converted light. As for the second direction (x-direction), it is possible to make the light flux sparse in the predetermined region, and in the region outside thereof, the light flux is rendered to be dense. Therefore, a distribution of light quantity in the longitudinal direction (x-direction) is implemented by controlling the light flux density, upon employing the linear light source apparatus as a light source of the image reading apparatus.
Abstract translation: 提供了一种线性光源装置，其被配置为将从一个发光元件发射的光线性地转换成光，并将其转换成光。 存在在第二方向（x方向）上以预定的扩散角将从光发射元件入射的光中的包含发光元件的光轴的预定区域内的光束扩散的透镜。 使光线相对于第一方向（y方向）会聚。 这将来自一个发光元件的光线转换为线性延伸的光，并输出转换的光。 对于第二方向（x方向），可以使光束在预定区域中稀疏，并且在其外侧的区域中，光通量变得致密。 因此，通过使用线性光源装置作为图像读取装置的光源，通过控制光通量密度来实现纵向（x方向）的光量分布。
-
-
-
Search Results
4
records
(took 0.013 seconds)
