SU42793A1 - A method of making light filters for ultraviolet radiation - Google Patents
A method of making light filters for ultraviolet radiationInfo
- Publication number
- SU42793A1 SU42793A1 SU136417A SU136417A SU42793A1 SU 42793 A1 SU42793 A1 SU 42793A1 SU 136417 A SU136417 A SU 136417A SU 136417 A SU136417 A SU 136417A SU 42793 A1 SU42793 A1 SU 42793A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ultraviolet radiation
- film
- making light
- light filters
- filters
- Prior art date
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
В р де случаев измерительной лабораторной практики необходимо создать пучок счета (белый или окрашенный , или даже невидимый), который содержал бы ультрафиолетовые лучи определенных длин волн. В виду того, что подбор источников света с такими требовани ми затруднителен, чаще всего дл этой цели примен ют экраны-фильтры , пропускающие лишь нужные участки спектра. При этом пользуютс либо специальными стекл нными фильтрами , либо кварцевыми кюветами, наполненными поглощающими растворами. Те и другие до сего -времени ввоз тс из-за границы и, кроме того, не вполне удобны в обращении, особенно фильтры второго типа.In some cases of measuring laboratory practice, it is necessary to create a counting beam (white or colored, or even invisible) that would contain ultraviolet rays of certain wavelengths. In view of the fact that the selection of light sources with such requirements is difficult, most often filters-screens are used for this purpose, which pass only the necessary parts of the spectrum. At the same time, either special glass filters or quartz cells filled with absorbing solutions are used. Those and others are still imported from abroad and, moreover, are not quite easy to handle, especially filters of the second type.
Предлагаемый способ изготовлени светофильтров дл ультрафиолетовых лучей основан на применении тонкой ацетилцеллюлозной пленки и состоит в следующем: берут пленку любого желаемого размера, толщиной от 20 до 200 микрон. В зависимости от границы участка спектра, который желательно пропустить, пленку берут либо из чистой ацетилделлюлозы, либо в нее нредварительно ввод т различные органические или неорганические веще (76)The proposed method of making light filters for ultraviolet rays is based on the use of a thin cellulose cellulose film and consists of the following: take a film of any desired size, from 20 to 200 microns thick. Depending on the border of the spectral region that is desirable to be missed, the film is taken either from pure acetyl cellulose, or various organic or inorganic substances are preliminarily introduced into it (76)
ства в количестве от 3°/о до 50Vo и более к весу пленки. Так, чиста неокращенна пленка пропускает всю видимую и ультрафиолетовую части спектра до длины волны в 2223 А°. Пленка, содержаща 25% коричной кислоты-всю видимую и ультрафиолетовую до 3150 А°. Преимуществом применени этого последнего вещества вл етс резкость границы поглощени и возможность выделени таким путем области ультрафиолета А, граница которой близка к 3150 А°, от областей В и С с соответствующими длинами волн.from 3 ° / o to 50Vo and more to the weight of the film. So, a clean, unreduced film transmits all visible and ultraviolet parts of the spectrum to a wavelength of 2223 A °. A film containing 25% cinnamic acid is all visible and ultraviolet up to 3150 A °. The advantage of using this latter substance is the sharpness of the absorption boundary and the possibility of extracting in this way the region of ultraviolet A, the boundary of which is close to 3150 A °, from regions B and C with corresponding wavelengths.
В случае надобности в пленку могут быть введены и некоторые красители. Преимущества такого типа фильтров: гибкость, прочность, дещевизна и простота получени .If necessary, some dyes can be added to the film. The advantages of this type of filter are: flexibility, durability, divisibility and ease of preparation.
Помимо применени пленки в качестве фильтра самой по себе, она может быть применена (в чистом виде) и в кюветах с поглощающими растворами, замен кварцевые окощки, которые гораздо менее доступны.In addition to using the film as a filter in itself, it can be used (in its pure form) and in absorbent solutions in ditches, replacing quartz fringes, which are much less accessible.
Предмет изобретени .The subject matter of the invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU136417A SU42793A1 (en) | 1933-10-20 | 1933-10-20 | A method of making light filters for ultraviolet radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU136417A SU42793A1 (en) | 1933-10-20 | 1933-10-20 | A method of making light filters for ultraviolet radiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU42793A1 true SU42793A1 (en) | 1935-04-30 |
Family
ID=48357457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU136417A SU42793A1 (en) | 1933-10-20 | 1933-10-20 | A method of making light filters for ultraviolet radiation |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU42793A1 (en) |
-
1933
- 1933-10-20 SU SU136417A patent/SU42793A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lythgoe | The absorption spectra of visual purple and of indicator yellow | |
| Raman | A new radiation | |
| Krishnan et al. | Raman effect: History of the discovery | |
| Denton et al. | The visual pigment of the conger eel | |
| SU42793A1 (en) | A method of making light filters for ultraviolet radiation | |
| Shear et al. | An investigation into the possible light-shielding role of gas vacuoles in a planktonic blue-green alga | |
| US2663801A (en) | Transmission fluorimeter | |
| Bogen | Detection of tubercle bacilli by fluorescence microscopy | |
| Burns | Photosynthesis and absorption in blue radiation | |
| Castle | The double refraction of chitin | |
| US3370902A (en) | Self-attenuating variable density light filter lens and compounds for making | |
| US2935908A (en) | Apparatus for chromatographic analysis | |
| Thompson et al. | The infra-red and Raman spectra of ethylene sulphide | |
| JPS5526454A (en) | Measuring method for permeability of sample liquid | |
| Bensasson et al. | Laser flash photolysis of rhodopsin at room temperature | |
| SU420584A1 (en) | PHOTOCHROME GLASS | |
| GB253373A (en) | An instrument for the detection of "cultured" pearls and the examination of all kindsof precious stones whether cut or uncut | |
| Edisbury | Collaborative Tests | |
| Nichols et al. | Studies in luminescence | |
| Gibson | Spectral Filters1 | |
| GB696675A (en) | Improvements in and relating to methods of, and apparatus for, determining the concentration of particulate matter contained in liquid suspensions or colloidal solutionsor of solutes in true solutions | |
| SU46055A1 (en) | Device for indicating the level of a liquid with gauge glass | |
| GB381335A (en) | Improvements in apparatus for the optical examination of transparent fluids or solids | |
| US1688259A (en) | Zerntk | |
| SU58974A1 (en) | Focal monochromator for the ultraviolet part of the spectrum |