DE1731752U - SCALES AND MEASURING SCREEN FOR OPTICAL READING DEVICES. - Google Patents

Description

& 2912 / <2 · 215.5Ι

Subject: W 7816 / 42b Gm

U. 5.1956 Dr. K / S.

Scales and measurement screens

for optical reading devices

There are optical reading devices for scales of all kinds are known in which a scale, for example, a longitudinal or circular pitch or ötriohplatte is mapped to a two-dimensional with Messmarkeη example a Transverse maßetab! Measurement screen provided by an optical system. These scales and measuring screens consist of the most opaque or poorly light-reflecting elements possible: the characters, figures or tick marks on the most translucent or light-reflecting area possible or vice versa.

Those made of as good or poorly translucent as possible or light-reflecting elements and built-up scales Measurement screens have crucial watchdogs. So can including luminous ones, e.g. through as transparent as possible

Columns in light undurohlässigem reason realized graduation lines in such reading devices are not sent, since the measurement screen outside of the partial graduation image would not be illuminated and a reading would be impossible. On the other hand, the graduation lines or the like displayed on the measurement screen are not visible as long as their images fall on opaque areas of the measurement projection screen. In the case of moving scales, however, it is usually desirable to be able to constantly monitor the graduation to be set, e.g. when a machine is to be set in a certain _t through the position indicated on the scale ns ti Il * especially if for this purpose, before reaching the target position, from overdrive to the slow gear must be switched.

In order to avoid these disadvantages, according to the present invention, the scales and / or the measuring screens are designed so that all areas of the same, i.e. with the scales 3oivohl the tick marks with the associated labeling as also the surrounding ground and at the fair pictures both the measuring figures with the associated lettering and the surrounding ground, well translucent or are good light-reflecting, but that on the scales the tick marks with the associated labeling are from Ground and / or in the measurement screens, the measurement figures with the associated labeling differ from the ground with regard to the Light transmission or light reflectivity dem By degrees or by color in a manner that is clearly and easily perceptible to the eye.

_- 7 _-

Around this that is clearly and easily perceptible to the eye To achieve a difference between the individual elements of the scale and the screen, the light transmission or the light reflectivity has to be achieved these elements only to a small extent to be weakened.

Among other things, the combinations of scales and measuring screens shown in FIGS. 1 a, 1 b, 1 g and 2 a, 2 b, 2 o are possible.
It is shown JLn: -

Fig. La section from the scale

1 = fully permeable area of the graduation line

2 = impermeable graduation

Fig. Ib measurement image screen

3 = fully permeable environment of the measuring figureπ

4 »partially permissible measuring figures

Fig. Ic projected image of the scale on the measuring screen Babei is:

1 * + 3 a picture from 1 to 3 1 * + 3 lighter than 1 '+ 4 2 * + 3 * " ⁿ 2 to 3 1 * + 4 lighter than 2 * + 4 l ^f + 4 = ⁿ " 1 to 4
2 * + 4 = * * 2 on 4

It is also shown in:

Fig * 2a Excerpt from the scale

1 = partially permeable area around the! Tick marks

2 β fully permeable graduation

Fig. 2b Meas screen

5 »fully transparent environment of the Mefi3 figures 4 * partially permeable measurement figures

Fig. 2o illustration of the scale on the measurement screen.

1 »partially dual environment of the tick marks

2 = fully permeable graduation

Where:

l ^f + 3 = image from 1 to 3

2 ^f + 3 = »" 2 "3

2 * + 4 β · » ^H 2 ^H 4

The entire surface of the left picture works as a Borgleuohte: but 2 * + ■ 3 is brighter than I ¹ + 3 or 2 ^r + 4, 1 * + 3 or »2 ^f + 4 is brighter than 1 ^f + 4.

Of course, the others are shown in the figures Connections between scale and measurement screens also with reflection scales e.g. metal rulers and projection screens possible if the light transmission due to a correspondingly good or bad light reflectivity is replaced. In doing so, read-through scales can be used with a pass-through measurement screen or incident light measurement screen and transparency scales can be combined with incident light measurement screens.

Claims (1)

OA 9 Q ^ ^ ^! "■ ^. 0Q C Ep \ .r \ * L 0 Us ^ tj, J.Dü Subject: W 7816 / 42b Sm / claim ! Äkalen ♦} and measuring screens for optical Ableseeinrichtangea in which scales of all types are mapped to a measurement screen by means of optics, characterized ^ DAEA both the graduations bit "! Associated label CMAE and the Sr and the scale, or both the Messfigaren with associated Besehriftang and they uogefaende reason of Ifessbildsehirmes well translucent or lichtre · * flektieresd sii ^, but that the graduations with eye- impaired Beseferif tang to voa Qrvtud the scale 1 and or Hessfigares with sagehSriger label is torn Sruöd of Messbildseh ir mes terms of Light permeability or the light reflection erinSgisss the degree or the color near in the Aage clearly and comfortably perceptible Seise usteracheidec *