公开(公告)号：US4912319A

公开(公告)日：1990-03-27

申请号：US160632

申请日：1988-02-26

Applicant: Shigeru Miyata ,  Yoshihiro Matsubara ,  Kiyotaka Ohno

Inventor： Shigeru Miyata ,  Yoshihiro Matsubara ,  Kiyotaka Ohno

IPC: G01N21/41 ,  G01J1/16 ,  G01J1/44 ,  G01N21/43 ,  G01N21/85

CPC classification number: G01N21/43 ,  G01J2001/1636 ,  G01J2001/444 ,  G01N21/85 ,  G01N2201/0621 ,  Y10S250/903

Abstract: A detector device for mixing ratio for gasoline and alcohol include an optically permeable column, one end of which is coated with a light-reflective layer. The circumferential surface of the column is at least partly immersed in mixing liquid of gasoline and alcohol.The light beams enter the column to be incident on said circumferential surface of the column and reflect from the circumferential surface to be incident on said light reflective-layer to reflect therefrom. The reflected light beams impinge on a photo diode which outputs in accordance with the intensity of the light beams impinged.The diametrical and lengthwise dimension of the column being determined such as to provide incidence angles of the reflected light beams changing from a minimum angle corresponding to the critical angle when the mixing liquid ratio is at the lower limit of the predetermined range to a maximum angle corresponding to the critical angle when the mixing liquid ratio is at the upper limit of the predetermined range.

Abstract translation: 用于汽油和醇的混合比的检测器装置包括光学透析柱，其一端涂覆有光反射层。 柱的圆周表面至少部分浸没在汽油和酒精的混合液体中。 光束进入柱入射到柱的所述圆周表面上并从圆周表面反射入射到所述光反射层上以从其反射。 反射光束照射到根据照射的光束的强度输出的光电二极管。 确定柱的直径和纵向尺寸，以便当混合液比在预定范围的下限至对应的最大角度时，提供从与临界角对应的最小角度改变的反射光束的入射角 当混合液体比例在预定范围的上限时达到临界角。

公开(公告)号：US4830504A

公开(公告)日：1989-05-16

申请号：US65942

申请日：1987-06-24

Applicant: Allen Frohardt ,  John A. Dahlquist ,  John J. Howarth

Inventor： Allen Frohardt ,  John A. Dahlquist ,  John J. Howarth

IPC: G01J1/16 ,  G01N21/15 ,  G01N21/47 ,  G01N21/57 ,  G01N21/86

CPC classification number: G01N21/57 ,  G01N21/4785 ,  G01J2001/1636 ,  G01N21/15 ,  G01N21/86

Abstract: A device for determining gloss on a surface having a calibrating feature wherein a gloss calibration standard is provided by means of a built-in standardization surface. The standardization surface provides a reference to which the gloss of a sample surface is compared. The standardization surface is protected from dust build-up throughout the operation of the device.

公开(公告)号：US4770536A

公开(公告)日：1988-09-13

申请号：US937367

申请日：1986-12-04

Applicant: Moshe Golberstein

Inventor： Moshe Golberstein

IPC: G01B11/30 ,  G01J1/16 ,  G01N21/47

CPC classification number: G01N21/474 ,  G01B11/303 ,  G01J2001/1636 ,  G01N2021/4716 ,  G01N2021/4742

Abstract: A relative reflectivity photometry instrument is provided for measuring surface reflectance as a measure, for example, of surface roughness of a specimen. The instrument includes a housing or barrel having a source of light at one end and a pair of photosensors such as photodiodes at the other end, one of which is positioned to receive rays directly from the light source and the other of which is oriented in a different direction to receive light only after the rays from the light source have struck the specimen and are scattered back onto the second sensor. Typically, the light source is mounted at the top of a barrel with the photodiodes positioned at the lower end of the barrel. The photodiodes are provided with a central opening through which a portion of the bundle of rays passes onto the specimen and is thereafter reflected onto the photosensitive surface of the second diode. Circuitry is provided for amplifying and comparing the signals received the first and second photosensitive surfaces. The comparing circuit can comprise a divider circuit for establishing a ratio between the signals from the first and second photodiodes.

Abstract translation: 提供相对反射率测光仪器用于测量表面反射度，例如测量样品的表面粗糙度。 仪器包括在一端具有光源的外壳或镜筒，以及另一端的一对光电传感器，例如光电二极管，其中一个被定位成直接从光源接收光线，另一个被定向成 在来自光源的光线已经撞击样品并被散射回第二传感器之后，不同的方向仅接收光。 通常，光源安装在镜筒的顶部，光电二极管位于枪管的下端。 光电二极管设置有中心开口，一束光线通过该中心开口穿过该样本并随后被反射到第二二极管的感光表面上。 提供电路用于放大和比较接收第一和第二感光表面的信号。 比较电路可以包括用于建立来自第一和第二光电二极管的信号之间的比率的分频器电路。

公开(公告)号：US4675661A

公开(公告)日：1987-06-23

申请号：US807979

申请日：1985-12-12

Applicant: Hiromitsu Ishii

Inventor： Hiromitsu Ishii

IPC: G01J1/42 ,  G01J1/16 ,  G01N21/53 ,  G08B17/10 ,  G08B17/103

CPC classification number: G01N21/534 ,  G08B17/103 ,  G01J2001/1636 ,  G01N2201/062 ,  G01N2201/0696

Abstract: A light-attenuation type fire detector assembly of the present invention comprises a light emission drive section including a light emitter for radiating light having an intensity corresponding to an input signal level; a smoke detecting section including a light receiver which directly receives the light radiated from the light emission drive section and is adapted to output a detection signal corresponding to the received light amount of the light receiver; a smoke amount computing section for computing the amount of smoke based on the detection signal from the smoke detecting section; a delay circuit for retarding input of the detection signal from the smoke detecting section to the light emission drive section for a predetermined time; and a control section for repeating the operations of the light emission drive section, the smoke detecting section and the delay circuit and generating a control signal after a predetermined period of time has been passed or a predetermined times of operation has been done to drive the smoke amount computing section, and wherein the amount of smoke is computed during a time when said smoke amount computing section is driven based on the smoke detection signal input to said smoke amount computing section to detect if there is attenuation in the radiated light due to smoke between the light emitter and the light receiver.

Abstract translation: 本发明的光衰减型火灾探测器组件包括：发光驱动部分，包括用于发射具有与输入信号电平相对应的强度的光的光发射器; 烟雾检测部分，其包括：光接收器，其直接接收从所述发光驱动部分辐射的光，并且适于输出与所述光接收器的接收光量相对应的检测信号; 烟量计算部，其根据来自烟雾检测部的检测信号计算烟雾量; 延迟电路，用于在预定时间内将检测信号从烟雾检测部分输入到发光驱动部分; 以及控制部分，用于重复发光驱动部分，烟雾检测部分和延迟电路的操作，并且在经过预定时间段之后产生控制信号或已经进行了预定的操作次数以驱动烟雾 量计算部分，并且其中在根据输入到所述烟量计算部分的烟雾检测信号来驱动所述烟量计算部分的时间期间计算烟量，以检测由于烟雾引起的辐射光中是否存在衰减 光发射器和光接收器。

公开(公告)号：US4550254A

公开(公告)日：1985-10-29

申请号：US571393

申请日：1984-01-16

Applicant: Mehrdad Zomorrodi ,  Li-Fung Cheung ,  Simon M. L. Law

Inventor： Mehrdad Zomorrodi ,  Li-Fung Cheung ,  Simon M. L. Law

IPC: G01J1/16 ,  G01J1/42 ,  G01J1/44 ,  G01N21/27 ,  G01N21/35 ,  G03G15/00 ,  G03G15/08 ,  G01J1/00

CPC classification number: G01N21/274 ,  G03G15/0855 ,  G01J1/4228 ,  G01J2001/1636 ,  G01J2001/4406 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/4738 ,  G01N2201/0621 ,  G03G15/5041 ,  G03G2215/00042

Abstract: An integrated circuit chip with digital and analog circuits thereon for providing a low cost infrared reflectance densitometer for detecting relative toner density on a photoreceptive surface including several stages of calibration including photodiode detection means 208 for monitoring and controlling the light output from a light emitting diode 206, photodiode means 302 for detecting undesired scattered and reflected background light signals, further photodiode means 304 for detecting the light reflected from said photoreceptive surface as may be affected by toner deposited thereon, an automatic gain control circuit 400 for automatically adjusting the output gain of the reflectance densitometer, and sample and hold circuit means 600 for adjusting the circuit for different effects of the aging, leakage current effects, or other undesired performance characteristics of the circuit components.

Abstract translation: 一种其上具有数字和模拟电路的集成电路芯片，用于提供低成本的红外反射光密度计，用于检测包括若干阶段的校准的感光面上的相对调色剂浓度，包括光电二极管检测装置208，用于监测和控制从发光二极管206输出的光 用于检测不期望的散射和反射的背景光信号的光电二极管装置302，用于检测可能受沉积在其上的调色剂影响的从所述感光表面反射的光的另外的光电二极管装置304，用于自动调节所述感光面的输出增益的自动增益控制电路400 反射光密度计，以及采样和保持电路装置600，用于调节电路，用于电路部件的老化，漏电流效应或其他不期望的性能特性的不同影响。

公开(公告)号：US4544273A

公开(公告)日：1985-10-01

申请号：US518633

申请日：1983-07-29

Applicant: Dale F. Berndt

Inventor： Dale F. Berndt

IPC: G01J1/16 ,  G01J1/18 ,  G01N21/53 ,  G01N21/00

CPC classification number: G01N21/534 ,  G01J2001/1636 ,  G01J2001/184 ,  G01N2201/0621 ,  G01N2201/1235 ,  G01N2201/12769

Abstract: Apparatus for controllably admitting a sample volume of engine exhaust into a bifurcated, closed-loop opacity chamber and wherein the exhaust sample is controllably directed away from the internal optics via symmetric flow inducing air guides. A pulsed light source is controllably directed through the opacity chamber and exhaust sample and the detected light is compared to a reference level so as to determine a relative measure of the sample's opacity. Attendant control circuitry permits the selected display of corresponding sample opacity and density values.

Abstract translation: 用于可控制地将发动机排气的样品体积引入分叉的闭环不透明室的装置，并且其中所述排气样品通过对称流引导的空气引导件被可控地远离所述内部光学器件。 脉冲光源被可控地引导通过不透明室并排出样品，并将检测到的光与参考水平进行比较，以便确定样品的不透明度的相对测量。 话务员控制电路允许选择显示相应的样本不透明度和浓度值。