SU134288A1 - Method for compensating non-uniformity of sensitivity of photocathode of transmitting tube - Google Patents
Method for compensating non-uniformity of sensitivity of photocathode of transmitting tubeInfo
- Publication number
- SU134288A1 SU134288A1 SU625100A SU625100A SU134288A1 SU 134288 A1 SU134288 A1 SU 134288A1 SU 625100 A SU625100 A SU 625100A SU 625100 A SU625100 A SU 625100A SU 134288 A1 SU134288 A1 SU 134288A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- photocathode
- sensitivity
- uniformity
- transmitting tube
- compensating non
- Prior art date
Links
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
Известны способы компенсации неравномерности чувствительности фотокатода передающей трубки в телевизионных системах с однострочным разложением. Однако при перемещении трубки или изменении режима ее работы требуетс повторна регулировка системы.Known methods of compensating for the uneven sensitivity of the photocathode transmitting tube in television systems with single-line decomposition. However, when moving the tube or changing its mode of operation, the system must be re-adjusted.
Описываемый способ обеспечивает автоматическую компенсацию неравномерности чувствительности фотокатода. Дл этого на фотокатоде (или мишени) трубки одновременно прочерчиваютс две близко расположенные строки. Одна из них используетс дл получени сигнала , соответствующего распределению световой энергии в исследуемом п тне, а втора , в месте расположени которой фотокатод засвечиваетс равномерно, служит дл получени компенсирующего сигнала . Дл одновременного получени на фотокатоде двух строк и разделени сигналов от них электронному лучу вместе с движением по горизонтали сообщаютс качани в вертикальном направлении с размахом, соответствующим рассто нию между строками. Отклонение производитс током или напр жением синусоидальной формы, поэтому луч прочерчивает на фотокатоде синусоиду (см. чертеж). Отпирание луча и сн тие сигналов происход т на верщинах синусоиды-в положени х 1, 2, 3-.. дл одной строки и 4, 5, 6... дл другой. Равномерна подсветка фотокатода в месте расположени второй строки может быть осуществленй различными способами.The described method provides automatic compensation for uneven sensitivity of the photocathode. To do this, two closely spaced lines are drawn simultaneously on the photocathode (or target) of the tube. One of them is used to obtain a signal corresponding to the distribution of light energy in the spot under study, and the second one, at the location of which the photocathode is irradiated uniformly, serves to obtain a compensating signal. To simultaneously receive two lines on the photocathode and separate the signals from them, the electron beam, along with horizontal movement, communicates the swing in the vertical direction with a sweep corresponding to the distance between the lines. The deviation is made by a current or a sinusoidal voltage, so the beam draws a sinusoid on the photocathode (see drawing). Beam unlocking and signal removal occur at the vertices of the sinusoid in the positions 1, 2, 3- .. for one line and 4, 5, 6 ... for the other. The uniform illumination of the photocathode at the location of the second row can be done in various ways.
Применение данного способа возможно при испытани х объективов.The application of this method is possible when testing lenses.
Предмет изобретени Subject invention
Способ компенсации неравномерности чувствительности фотокатода передающей трубки в телевизионных системах с однострочным разложением , отличающийс тем, что, с целью обеспечени автоматической компенсации этой нерав.номер,ности, на мишени трубки прочерчены электронным лучом две близко расположенные строки, одна, из которых использована дл получени сигнала изображени , а втора , в месте расположени которой фотокатод засвечен равномерно,,- дл аолучени компенсирующего сигнала..The method of compensating for the nonuniformity of the sensitivity of the photocathode of the transmitting tube in television systems with single-line decomposition, characterized in that, in order to provide automatic compensation for this unequal number, two closely spaced lines are drawn on the tube target, one of which is used to obtain the signal images, and the second one, at the location of which the photocathode is irradiated uniformly, to receive the compensating signal.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU625100A SU134288A1 (en) | 1959-04-13 | 1959-04-13 | Method for compensating non-uniformity of sensitivity of photocathode of transmitting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU625100A SU134288A1 (en) | 1959-04-13 | 1959-04-13 | Method for compensating non-uniformity of sensitivity of photocathode of transmitting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU134288A1 true SU134288A1 (en) | 1959-11-30 |
Family
ID=48405255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU625100A SU134288A1 (en) | 1959-04-13 | 1959-04-13 | Method for compensating non-uniformity of sensitivity of photocathode of transmitting tube |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU134288A1 (en) |
-
1959
- 1959-04-13 SU SU625100A patent/SU134288A1/en active
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