JPS4834797B1 - - Google Patents
Info
- Publication number
- JPS4834797B1 JPS4834797B1 JP43052540A JP5254068A JPS4834797B1 JP S4834797 B1 JPS4834797 B1 JP S4834797B1 JP 43052540 A JP43052540 A JP 43052540A JP 5254068 A JP5254068 A JP 5254068A JP S4834797 B1 JPS4834797 B1 JP S4834797B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65681967A | 1967-07-28 | 1967-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4834797B1 true JPS4834797B1 (ja) | 1973-10-23 |
Family
ID=24634708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP43052540A Pending JPS4834797B1 (ja) | 1967-07-28 | 1968-07-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3552863A (ja) |
| JP (1) | JPS4834797B1 (ja) |
| DE (1) | DE1773885C3 (ja) |
| GB (1) | GB1241448A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313074U (ja) * | 1986-07-10 | 1988-01-28 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3742196A (en) * | 1971-09-09 | 1973-06-26 | American Monitor Corp | Method and electronic control for the analyzation of serum chemistries |
| USRE28803E (en) * | 1971-09-09 | 1976-05-04 | American Monitor Corporation | Method and electronic control for the analyzation of serum chemistries |
| US3790279A (en) * | 1971-09-28 | 1974-02-05 | Environment One Corp | Oil contamination monitor with digital signal processing |
| US3989948A (en) * | 1975-06-09 | 1976-11-02 | Instrumentation Specialties Company | Dual beam optical system |
| EP0987663A1 (de) | 1998-09-14 | 2000-03-22 | Siemens Building Technologies AG | Optischer Rauchmelder nach dem Extinktionsprinzip und Verfahren zur Kompensation von dessen Temperaturdrift |
| CN104374749B (zh) * | 2014-11-24 | 2017-09-29 | 吉林大学 | 一种晶体矿物的透光率检测装置 |
-
1967
- 1967-07-28 US US656819A patent/US3552863A/en not_active Expired - Lifetime
-
1968
- 1968-07-22 DE DE1773885A patent/DE1773885C3/de not_active Expired
- 1968-07-26 JP JP43052540A patent/JPS4834797B1/ja active Pending
- 1968-07-26 GB GB35889/68A patent/GB1241448A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313074U (ja) * | 1986-07-10 | 1988-01-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1773885A1 (de) | 1972-01-27 |
| US3552863A (en) | 1971-01-05 |
| DE1773885B2 (de) | 1973-05-30 |
| DE1773885C3 (de) | 1973-12-13 |
| GB1241448A (en) | 1971-08-04 |