DE7041495U - ADDITIONAL DEVICE WITH POLARIZING DISC FOR PROJECTORS - Google Patents

Description

Patent attorney ^^

D _lp i.Phys.Dr Waither3unius ²²

Hanover, illus. 20 Dr

My files: 200

Klaus Yl. Eeiser + Co., 607 Langen, Langestrasse 3-5

Additional device with polarizing disc for projectors

The present invention "relates to an attachment with Polarization disk for projectors, especially writing projectors, "consisting of a transparent bill with polarizing properties uqcL from e-iaer

When working with writing tools and projectors, it is in many cases advantageous if representations are made in polarized light. It is then possible to use teaching aids whose structure is designed so that light shining through is polarized., to make "certain parts of the teaching material" easier to understand. For this reason there are sos7ohX for writing projectors as well as for other Srogectors PoX 'attachments, which are abex quite tBnszr izacL a TJmOau of the device necessary n & c.h.an ₃ ssim. 22 ± there is even a special projection.

The present invention wa.il now create a small, handy device which can be used as an additional device for any projectors and thus creates the possibility of ₃ to any projectors without conversion. Projectors with polarized light to work-

The essence of the additional device according to the invention consists in that a polarizing disc is provided in a holder to connect the fixed ax exnein housing is what a drive motor for the polarizing disk and the electrical connections for the motor and which one to attach to the projector is prepared.

It is useful if the housing has at least one drive wheel for the polarization disk, so that the polarization disk with the help of this drive wheel on outer circumference rotated v / ground.

It is also useful if the housing has a bracket for an electric battery or an electric accumulator and switches for switching it on and off of the electric drive and / or for switching on the Yor and E return of the electric drive and / or for speed adjustment. Partial it is when the housing has magnets on at least one side

This additional device has the Yorteil that by the motor drive a movement comes into the picture, äxtreh which dxe certain mxr polarized yacht visible Ropes "are clearly visible on some of the rotating coils

then verseJavrinden other rope of the image.

The uniform rotation that causes a motor ", 7 / gut the projection of such images ird particularly clear. The working with the overhead projector and projector teachers will not need more hand (set k2.e Polsrisstioxisscheibe so that it's ÄuJTmeriisazEkeit his Thanks to the magnets as. The housing is achieved that this housing can easily be attached to metallic parts of writing projectors or projectors be made so small that it is no bigger than a cigarette packet.

It is advisable if the holder for the polarization disk has a self-contained rod that carries ^{a bearing for the polarization disk} at one end or is designed as such and is to be fastened at the other end in the housing. In this embodiment, a drive wheel attached to the housing can very easily attack the circumference of the polarizing disk. The storage "will in this way be very sinSsch. Hy ¹ ". ^ OTPj -7: a-gy ^ oa 41a Costs for the device will be very low.

Structurally, there is a very simple possibility z? / ei recordings offset from one another by 90 ° for the to provide pointing stick-like rod in the housing, so that two ways of attaching the polarized Disc against the housing exist. Here, the recordings for the zeigestoekähziliclieii stick are designed in such a way that that each recording has an ELemmittel for the stick. This has the advantage that depending on the geometric conditions of the existing projector, the housing can be attached to a convenient location on the projector

704149SÖ.5.71

and that the polarizing disk according to the attachment of the housing in a simple manner in the Beam path introduced can v / ground.

Another way to store the polarization

I disk insists that the holder for the polarization

I tion disk one encompassing the polarization disk

Bing is j for which a the Bing to one or the drive

j wheels pressing device is provided, which from

} Bing is foldable. Here, too, there is the possibility

1 the polarizing disc in two different un 90

1 staggered levels, namely

I based on the housing

1 The i / esen of the present invention is illustrated in FIG

ι the drawing apparently illustrated embodiment

] play Ph. π he explained. Ss show:

Pig. 1 the additional device according to the invention in supervision.

Pig. 2 the device of the Pig. 1 ™ it staggered Housing, also under supervision.

Pig- 3 the subject of the Pig. 2, seen from the side.

Pig. 4 the inclusion of the pointing stick-like rod in ι Housing at the subject of the Pig. 1 to 3·

jrig. 5 a section through a Ίίβϊΐ of another additional device according to the invention, in which

I the polarization disk is an annular holder

j on

having.

Pig · 6 another possibility for attaching the drive in another embodiment.

The additional device for projectors consists of a polarization disc 1 and a housing 2. This housing 2 houses the devices for the electrical power supply, an electric motor, switches for switching on and off, the goalkeeper and backward posture and for adjusting the device. The electric motor located in the lower part of the housing drives the drive gear 3, which attack the periphery of the polarization disk »3e ± the object of FIGS Housing 1 pushed in. Here a bast 6 ″ is provided, which is pressed downwards by a 3-edged 7. This recess S is wedge-shaped so that the seigestoek-like rod is given a firm seat. Due to the provided receptacles 5, it becomes impossible to change the pointer-like rod on the housing, so that once the housing can assume the position that is shown in Pig. 1 and the other time the position shown in Pig. 2 is shown. While in Pig. 1 the polarizing disk 1 lies in the same plane as the housing 2 and here the band of the polarizing disk 1 is pressed against the drive rollers 5 from the outside, the drive takes place in the position in Pig. 2 also by dxe drive wheels 3, only with the difference that here the band 9 of the polarization disk 1 rests against the drive wheels 3 from below and is pressed against the drive wheels 3 by the pressure wheels 13, as in Pig. is shown.

l; i Pj-g. Figure 5 shows an embodiment in which the stick-like stick - + n-clrfc - is now present. Here // eist

-S- f

the Polarlsaticnsscheibe 1 a very "broad annular sand 13 aiii, engages the drive roller 10th contents of this sand is Shall 11 from dansjL one is attached to a fold-down ironing 12th Buren the Abklappbarkeit of the bracket 12, it becomes possible aas The polarization filter is removed from the housing 2 ^{- S 1} Ig- 6 shows a slightly different design. Here the drive roller is designated 14. Here again, pressure rollers 11 and an additional pressure roller 15 are provided so that = the sand IS of the polarization disk 1 is kept in proper ice.

7 shows different mounting options for one l; Magnet provided housing 2 on a writing projector.

Claims (1)

S c h u t s a 21 s ρ r-Ii c h e: 1. Additional device with polarization disc for protectors, in particular Writing projectors ”, consisting of one transparent lens with polarizing properties and from a holder, marked through a seat of the holder of the polarizing disc (1) Fixed housing (2) to be connected, r / elchas a drive motor for the polarization disc (i) -and the electrical connections for the Sotor sufairsst and which fSr the attachment to the projector is made. 22nd is 1st * 2. Device according to claim 1, characterized in that the housing (2) has at least one drive wheel (3) for the Polarizing disk * 5. Apparatus according to claim 1 and 2, characterized in that that the housing (2) a holder for an electrical Battery or an electric accumulator and switch for switching the electric drive on and off and / or for switching on the pre- and ESeklsufes of the electric drive and / or for the speed setting to v / eist. 4. Apparatus according to claim 1 to 5, characterized in that that the housing (2) on at least an ice string Ma, wearing. 5. Device naked claim 1 to 4 » characterized, that the holder for the polarization element i (1) has a pointing stool älr p l iclier Stali (4) lsi; - which at one end carries a bearing for the po3.ari3at; i © nsse3ieil3e (1) or al ^ such au.sgeoüde ~ E isi; "and Eil; its other end is to be fastened in the housing (2); - δ. Device according to claim 1 to 5,
characterized,
that ζπ32. UE 90 against each other Trersei; z1; e J recordings for ,,, 'are the display-like status (4) in the housing (2)
and that each clamping means (β "7) for the pusher (4) 7. Apparatus according to claim 1 to 4, characterized, _r that the holder for the polarization disc (1) j ^{f is} input (S, 19) encompassing the polarization disk (1), for one the Sing (9 »19) to the drive wheel or wheels (>) pressing device is provided which is.