DE7046780U - EXCHANGEABLE VALVE FOR DIAPOSITIVE - Google Patents

Description

AGKA -iiEVAEM >' AK ^ lEWi'E!'':', I ^ JJlMF ' ¹ ". December

Leverkusen . 0-fü-ew;

MK 701

Exchange notes for Dl'positive

The innovation concerns an interchangeable slide for slides, through which, when moving from a first position to a second position, a slide from a delivery station to a

W <out of focus located in a projection beam path

is transferred by the one moving from the second

Position in the first position in one in the projection beam path inclined focus for ir.Jliuhes slide from this is transferred to a receiving station, while the slide located in the Unr harfstellung by springs or the like is transferred into focus, and which is in its second position in the projection beam path.

In the case of a still projector equipped with such an interchangeable slide, one is produced with every slide change process
Dark break. The resulting rapid change of light and dark is usually perceived as uncomfortable, as it burdens the viewer's A ig.

-P-MK

The task of the innovation is therefore to create a change slide that enables a slide to be changed without a dark break. Furthermore, it should be possible through this interchangeable slide to achieve a dissolve effect with a slide change. No matter what poll di ^ e. Fuzzy-sharp appearance that occurs during the "transfer" of the slide to be projected out of focus results in the focus, mitigated v / ground.

According to the innovation, this object is achieved by an interchangeable slide of the type mentioned at the beginning, which is characterized by a passage opening for the projection beam path that is effective in its second position. With this mask, a slide change is possible without a dark pause. A fading effect arises from the fact that both the slide that is out of focus and the 'r. ; 3-focussed slide is projected, the slide that is in focus is removed from the projection beam path by the V-change process and the slide that is in focus is brought into focus within the projection beam path. The fading effect achieved at the same time alleviates the out-of-focus-sharp-appearance, since the fading slides do not require the observer's eyes to pick up an abrupt change of the slides in the out-of-focus position.

- 'J ■' - ■
MK 70 ¹

In order to use both normal projection and Allowing cross-fading projection is particularly advantageous Design of the idea of innovation to your V'wechselrchieber a movable vector is provided through which the passage opening is coverable.

Further advantages and details of the innovation are given below based on a drawing in its single figure in a perspective view in which the components are pulled apart shows an embodiment according to the innovation, explained in more detail,

According to the single figure, an interchangeable slide is denoted by ¹ as a whole. This is movably mounted in a guide which is formed by the two housing parts 2 and 3. A dispensing station 4, shown only schematically, is attached to the housing part 2, and a receiving station 5, likewise shown only schematically, for slides is attached to the housing part j5. The housing part 2 and the housing part 3 have passage openings 6 and 7 for a projection beam path denoted by 8. Due to the V.'and 2a of the housing part 2 facing the interchangeable slide 1, an out of focus position is defined in the projection beam path 8, through which the wall 3 ^a ^ of the housing part 3 also facing the interchangeable slide 1 defines a focus for a slide in the projection beam path 8.

_ II _

70A678018.3.71

The mode of operation of the arrangement made is now as follows:

The slides located in the delivery station 4 are pressed in the direction of the interchangeable slide 1 by known and therefore not shown spring means. When the interchangeable slide 1 moves from a first position denoted by 9 to a second position denoted by 10, the slide of the dispensing station 4 adjacent to the interchangeable slide 1 is captured by a driving edge 11, held between the edges 12a and 12b and thus out of the dispensing station 4 in the out of focus defined by the wall 2a of the housing part 2 at the level of the passage opening 6 of the housing part 2. ? '- \ by the' // and 3a defined of the housing part 3 Sc lung befindliches slide presses a ir ¹ attached to the V.'echselschxt ^ driving spring 13 inoperable to the shuttle spool 1, since a Pührungslappen 1 3 ^a of the drive spring 13 in a recess 14 of the interchangeable slide 1 can be pushed in. When the interchangeable slide 1 has reached its second position, the driver spring 13 has slid past the slide that is in focus and can stand out again from the interchangeable slide 1 behind it. When the interchangeable slide 1 is moved from the second position to the first position, the slide in focus is therefore taken along by the driver spring 13 and is transferred from the focus position to the receiving station 5. A spring 15 attached to the housing part 3 ensures that the next following movement of the interchangeable slide ¹ from the first position 9 into the

_ E j,

second position 10 the slide that has just been deposited in the delivery station is retained in the latter. While moving of the change slide 1 from the second position to the first Position 9 it is springs 1C on the housing part 2 possible that Slides in the out of focus position from wall 2a of the housing part 2 to be pushed away and to the wall ^ a of the ("Jehäuseteils 3 to be pressed and thus the slide from the out of focus into the focus within the projection beam path 8 to convict.

The interchangeable slide 1 now has a passage opening 17, which is effective in its second position 10, for the projection beam path 8 on. There is a dark pause through this passage opening 17 avoided during the slide change. There is also a fading effect achieved, - by inserting a slide into the Defocusing the slide that is in focus faded by the slide brought into the out of focus will.

In order to make the interchangeable slide 1 suitable both for normal projection and for cross-fade projection, a sector i8 is provided which is guided in a slot 19 of the interchangeable slide 1. ^{The passage opening 17 of the interchangeable slide 1} for the projection beam path B is to be covered by the sector 18, so that normal projection is possible.

Claims (2)

AQFa-GEVAER'l ¹ AKTIENGESELLSCHAFT 17 December 1 MK 701 Protection claims *. V.'change slide for slides, through which, when moving from a first position to a second position, a slide is transferred from a delivery station to a defocused position in a projection beam path, through which, when moving from the second position to the first position, an in A slide located in the projection beam path is transferred from this to a receiving station, while the slide located in the defocused position is brought into focus by springs or the like, and which is in its second position in the projection beam path , characterized by one in its second position (10) effective passage opening (17) for the projection beam path (8). 2. Exchange slide according to claim 1, characterized in that a movable sector (18) is provided through which the passage opening (17) can be covered. \ 1 sheet of drawings