SU389778A1 - DEVICE FOR MEASUREMENT IN THE SELECTION OF POINTS - Google Patents
DEVICE FOR MEASUREMENT IN THE SELECTION OF POINTSInfo
- Publication number
- SU389778A1 SU389778A1 SU1466924A SU1466924A SU389778A1 SU 389778 A1 SU389778 A1 SU 389778A1 SU 1466924 A SU1466924 A SU 1466924A SU 1466924 A SU1466924 A SU 1466924A SU 389778 A1 SU389778 A1 SU 389778A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- selection
- measurement
- points
- ruler
- scale
- Prior art date
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Eye Examination Apparatus (AREA)
- Eyeglasses (AREA)
Description
1one
Изобретение относитс -к области офтальмологии , в частности к устройствам дл измерени межзрачкового рассто ни антропометрических измерений при подборе очков.The invention relates to the field of ophthalmology, in particular to devices for measuring the interpupillary distance of anthropometric measurements in the selection of glasses.
Известно устройство дл измерени межзрачкового рассто ни при подборе очков, содержащее прозрачную фигурную линейку с нанесенной на ней шкалой.A device for measuring the interpupillary distance in the selection of glasses is known, which comprises a transparent figured ruler with a scale applied thereto.
Недостатком известного устройства вл етс то, что при небольшой толш;ине линейки малое рассто ние между двум шкалами не обеспечивает уменьшени паралла кса, а при увеличении рассто ни между шкалами необходимо иметь толстую линейку, это ухудшает различение объектов измерени из-за снижени прозрачности л нейки.A disadvantage of the known device is that with a small thickness, and the small distance between the two scales does not reduce the paral x, and as the distance between the scales increases, it is necessary to have a thick ruler, which impairs the distinction of measurement objects due to the reduced transparency of the ney .
С целью исключени параллакса и обеспечени четкого видени измер емых объектов предлагаемое устройство снабжено второй линейкой , шкала которой совпадает с первой при просматривании в проход ш,ем свете и отнесена от первой .на рассто ние, равное величине в 150 раз большей ширины штрихов, и стойками, скрепл ющими обе линейки.In order to eliminate parallax and provide a clear view of the measured objects, the proposed device is equipped with a second ruler, the scale of which coincides with the first when looking into the aisle and the light and is separated from the first to a distance equal to 150 times the width of the strokes, and racks holding both rulers together.
На чертеже изображено предлагаемое устройство в двух проекци х.The drawing shows the proposed device in two projections.
Предлагаемое устройство содержит прозрачную фигурную линейку 1 с нанесенной на ней шкалой 2. На рассто нии, обеспечиваюш ,ем измерение без параллакса, установлена втора линейка 3, шкала которой совпадает с первой. Линейки жестко закреплены между собой стойками 4.The proposed device contains a transparent figured ruler 1 with a scale 2 applied on it. At a distance providing a measurement without parallax, a second line 3 is installed, the scale of which coincides with the first one. Rulers are rigidly fixed between the posts 4.
Промежуток между этими двум линейками обеспечивает четкое различие измер емых объектов . Конфигураци обеих линеек обеспечивает измерение всех необходим :.1х параметров при подборе очков.The gap between these two lines provides a clear distinction between the measured objects. The configuration of both lines ensures the measurement of all is necessary: .1x parameters in the selection of points.
Предмет изобретени Subject invention
1515
Устройство дл измерени при подборе очков , содержащее прозрачную фигурную линейку с нанесенной на ней шкалой, отличающеес тем, что, с целью исключени параллакса иA device for measuring the selection of points, containing a transparent figured ruler with a scale applied to it, characterized in that, in order to eliminate parallax and
обеспечени четкого видени измер емых объектов , оно снабжено второй линейкой, шкала которой совпадает с первой при просматривании в проход щем свете и отнесена от первой на рассто ние, равное величине в 150 разproviding a clear view of the measured objects, it is equipped with a second ruler, the scale of which coincides with the first when viewed in transmitted light and is related to the first by a distance equal to 150 times
большей ширины штрихов, и стойками, скрепл юшими обе линейки.greater width of the strokes, and racks, fastened both lines.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1466924A SU389778A1 (en) | 1970-07-27 | 1970-07-27 | DEVICE FOR MEASUREMENT IN THE SELECTION OF POINTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1466924A SU389778A1 (en) | 1970-07-27 | 1970-07-27 | DEVICE FOR MEASUREMENT IN THE SELECTION OF POINTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU389778A1 true SU389778A1 (en) | 1973-07-11 |
Family
ID=20456143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1466924A SU389778A1 (en) | 1970-07-27 | 1970-07-27 | DEVICE FOR MEASUREMENT IN THE SELECTION OF POINTS |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU389778A1 (en) |
-
1970
- 1970-07-27 SU SU1466924A patent/SU389778A1/en active
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