公开(公告)号：US1419385A

公开(公告)日：1922-06-13

申请号：US30271119

申请日：1919-06-09

Applicant: LEROY KELLOGG

Inventor： LEROY KELLOGG

IPC: G01J1/12

CPC classification number: G01J1/12

公开(公告)号：US11317034B2

公开(公告)日：2022-04-26

申请号：US16511476

申请日：2019-07-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sunil Rathour ,  Nitesh Goyal ,  Pranav Jadav ,  Ankit Agarwal ,  Avinash Thakur

IPC: H04N5/235 ,  G05D25/02 ,  G01J1/12 ,  H04M1/72454

Abstract: An electronic device for controlling a brightness of a light source and an operating method of the electronic device are provided. According to the electronic device and the operating method, an image including an ambient environment of a light source is captured, information of an exposure of the captured image is obtained, information about a brightness of the ambient environment of the light source is determined based on the information about the exposure, and a brightness of the light source is controlled based on the determined information about the brightness of the ambient environment.

公开(公告)号：US20050024538A1

公开(公告)日：2005-02-03

申请号：US10879164

申请日：2004-06-30

Applicant: Du-sik Park ,  Heui-keun Choh ,  Hyun-Jeong Koo ,  Chang-yeong Kim ,  Jin-ho Yim ,  Dong-sik Park ,  Hwan-young Kim

Inventor： Du-sik Park ,  Heui-keun Choh ,  Hyun-Jeong Koo ,  Chang-yeong Kim ,  Jin-ho Yim ,  Dong-sik Park ,  Hwan-young Kim

IPC: H04N5/66 ,  G01J1/12 ,  G09G5/00 ,  G09G5/02 ,  G09G5/10 ,  H04N5/58 ,  H04N9/64 ,  H04N17/04

CPC classification number: G09G5/10 ,  G01J1/12 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0693 ,  H04N5/58 ,  H04N21/4318 ,  H04N21/4854

Abstract: A method of visually measuring the brightness of ambient lighting around a display device is disclosed. In this method, first, a reference brightness of the display device is determined according to a type of display device. Thereafter, information about locations where the display device is used is received from the user, and illuminance values of the display device corresponding to brightness stages are set based on the reference brightness and the location information. Then, a reference brightness is converted into each of the illuminance values corresponding to each of the brightness stages. The converted images with the illumination values corresponding to the brightness stages are displayed to the user, and an image that has a brightness value nearest to the brightness of ambient lighting is selected, and the brightness value of the selected image is determined as the brightness of ambient lighting.

Abstract translation: 公开了一种在视觉上测量显示装置周围的环境光的亮度的方法。 在该方法中，首先，根据显示装置的种类来确定显示装置的基准亮度。 此后，从用户接收关于使用显示装置的位置的信息，并且基于参考亮度和位置信息来设置与亮度级对应的显示装置的照度值。 然后，将参考亮度转换成对应于每个亮度级的每个照度值。 将具有与亮度级对应的照度值的转换图像显示给用户，并且选择具有最接近环境照明亮度的亮度值的图像，并且将所选图像的亮度值确定为 环境照明。

公开(公告)号：US4604963A

公开(公告)日：1986-08-12

申请号：US676832

申请日：1984-11-30

Applicant: James A. Kirkham

Inventor： James A. Kirkham

IPC: G01J1/12 ,  G01J3/52

CPC classification number: G01J1/12

Abstract: A hand held and hand operated apparatus for analysis of the relationship between numerical values and displayed greyscale of pixels making up an image matrix. The apparatus has a pair of relatively movable members that are located relative to each other to display a greyscale in comparison relationship to window and level scales used to provide rapid analysis of a greyscale distribution of a given image. The members comprise a first cylindrical member concentrically accommodating a cylindrical sleeve. The first member has viewing ports ruled with scales representing values of selected window and level. The sleeve has the greyscale which can be selectively longitudinally and rotatably positioned relative to a viewing port to provide analysis information concerning the greyscale distribution of an image, such as the image on an X-ray film or displayed on a CRT.

Abstract translation: 一种用于分析数值与构成图像矩阵的像素的显示灰度之间的关系的手持和手动装置。 该装置具有相对于彼此定位的一对相对可移动的构件，以便与用于提供给定图像的灰度分布的快速分析的窗口和水平刻度的比较关系显示灰度。 构件包括同心地容纳圆柱形套筒的第一圆柱形构件。 第一个成员具有用表示所选窗口和级别的值的标度的观察端口。 套筒具有可相对于观察口选择性地纵向和可旋转定位的灰度，以提供关于诸如X射线胶片上的图像或CRT上显示的图像的灰度分布的分析信息。

公开(公告)号：US3644048A

公开(公告)日：1972-02-22

申请号：US3644048D

申请日：1970-06-23

Applicant: AGFA GEVAERT AG

Inventor： GUNTHER HANS ,  KONIGL GEORG ,  KORTNER HANS

IPC: G01J1/12 ,  G01J1/10

CPC classification number: G01J1/124 ,  G01J1/12

Abstract: Reference light having a first color within a predetermined spectral range is combined with a colored part of the light to be measured which has passed through a filter having a second color within a spectral range complementary to the predetermined range. When the combined light assumes a third color, the brightness of the measured light is equal to the predetermined brightness of the reference light. Reflecting grid surfaces are used for deflecting the reference light into the path of the colored part of the measured light.

Abstract translation: 具有预定光谱范围内的第一颜色的参考光与已经通过具有与预定范围互补的光谱范围内的第二颜色的滤光器的被测光的有色部分组合。 当组合的光呈现第三种颜色时，所测量的光的亮度等于参考光的预定亮度。 反射栅格表面用于将参考光偏转到测量光的有色部分的路径中。

公开(公告)号：US3416866A

公开(公告)日：1968-12-17

申请号：US35910964

申请日：1964-04-13

Applicant: POLAROID CORP

Inventor： LAND EDWIN H ,  RYAN WILLIAM H

IPC: G01J1/12

CPC classification number: G01J1/12 ,  G01J1/124

公开(公告)号：US3357230A

公开(公告)日：1967-12-12

申请号：US41703764

申请日：1964-12-09

Applicant: POLAROID CORP

Inventor： TOPAZ JEREMY M

IPC: G01J1/12 ,  G03B43/00

CPC classification number: G01J1/124 ,  G03B43/00

公开(公告)号：US3315579A

公开(公告)日：1967-04-25

申请号：US35911464

申请日：1964-04-13

Applicant: POLAROID CORP

Inventor： LAND EDWIN H

IPC: G03B7/04 ,  G01J1/12 ,  G03B7/02 ,  G03B9/08 ,  G03B17/08

CPC classification number: G03B17/08 ,  G01J1/124 ,  G03B7/02 ,  G03B9/08 ,  Y10T74/20012

公开(公告)号：US2440266A

公开(公告)日：1948-04-27

申请号：US56643144

申请日：1944-12-04

Applicant: HALL JOSEPH M

Inventor： HALL JOSEPH M

IPC: G01J1/12

CPC classification number: G01J1/124

公开(公告)号：US2269723A

公开(公告)日：1942-01-13

申请号：US20678938

申请日：1938-05-09

Applicant: RES ENGEINEERING COMPANY

Inventor： FELIX LEWIN

IPC: G01J1/12

CPC classification number: G01J1/124