DE1727887U - DEVICE FOR PROTECTING TELEVISION CAMERA LENSES AND PICTURE RECORDING EARS. - Google Patents

Description

ÖI326616HI & 56

PLI / Wi / Si June 8, 1956

ff 97 5 9 / 57a G m

FBRHSlH ff.MB «H. _P Denastadt »Aa Alten Bahnhof 6«

Device on the cover of television camera lenses la sw * image pick-up tubes

The innovation relates to improvements in television cameras, according to the control, the lens of the television camera or picture tube is protected by mechanical means, which, however, release the beam path, if operating voltages are supplied to the television camera, if the television camera is ready for use, so int?

Because the lens aer television camera to mechanical "chemical and optical Sinviii'kungon and against letstere the image pickup tube is protected when not in operation," The mechanical effects z # B * of small "sharp-edged mineral or Metallj> can ertikeln and clie chemical effects js.B «originate from vapors at the installation site of the television camera«. The Ferasöhkaiaera equipped according to the innovation is therefore very versatile and can also be used under difficult installation conditions, which is particularly advantageous when it is used for remote monitoring in technical companies.

In a preferred model of this type remains the Camera shutter .normally almost closed and

will only open automatically »when the camera is in operation »whereby a previously selectable aperture is released. They move the mechanical Protection means is made on electromagnetic Paths using cogwheels and levers »Ge & äS of a further education the above-mentioned mechanical protection means can also consist of a flap, which is rotatable about an axis »whereby this Axis preferably arranged parallel to the Öbjelctivaehse is*

In the following, the tax on Hanc of the figure representing a Λαδί guide example is described in more detail.

The rotatable flap 1 protects the lens 2, which ia operation throws an optieehes image on the oil storage disk of the YidikOBS 3 * The tension spring 4 exerts a torque on the gears 5 and 6, the rotates Shaft 7 and the flap 1 in such a way that the lens 2 is covered "

In a slightly modified design, the shaft 7 of the gear 8 is connected that via the gear rim 9 the iris diaphragm JO so isnge yerdrelrfc »to the smallest Blendßnöffmiag is set "

Operation άβτ Fernsehlcöniera the solenoid 12 is energized and rotates (against the power of the tension spring 4) the track wheels 5, 6 »the VYelle 7 and the flap 1, until the lens Z is no longer covered. With the modified design, the solenoid 12 is also energized after the operation sufiihrung on the television.

gears 5 »6 and the shaft 7 eitf gear 8, dKe with des: Sahnkrana 9 i & Singriff and the iris diaphragm 10 oo long turned until the previously set 31endcneinctell lever 13 clicks into place *

Claims (1)

P> L326616 * -a & 56 - 4 protection claims; 1 · Device gum 3protection of Forncehkaiaeraob ^ ektiv or · Fernfsehaufaufnahmemeröhrexi »characterized in that & a.B in front of the lens of the television camera or in front of the Image pick-up tube movable mechanical means are available which automatically release the beam path » when the television camera is supplied with operating voltages v? erate. 2 · NaOH apparatus of claim 1 "characterized in" that the mechanical means froigehen & en beam path automatically only, v? Hen the television camera is ready »OCE in particular only after the Binsohaltuzig Anodenspcinnung image pickup tube · 3 «device according to claim 1, or 2, cladureh gekennaeichnet, that the aperture diaphragm of the distanceehkaiaera At rest, its lowest value is only automatically reached when the television camera is started up selected, corresponding to the admission conditions Aperture is set " 4 «Iforrichturtg according to any one of the preceding claims" characterized in that _f the movement of the mechanical means is effected by electromagnetic means preferably by means of gears or levers. 5 # device according to claim 1 or 4 »characterized in that that as a related mechanical means one Flap is provided, which is rotatable about an axis, which is preferably parallel to the object axis.