First experimental model 1959 |
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specifications: Lenses: 2 Agfa Gucy viewer lenses
(plastic) |
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Outdoor model 1962 |
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| Lenses: 2 Agfa Gucy viewer
lenses (plastic) Focal distance: 55 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x28 mm. amount of slides: 19 Slide drum: pram wheel with wooden bars. Slide transport: with lever. and coin operated. Illumination: daylight via mirror. This was the first outdoor model Hugo made and placed along the road in Bilthoven, the Netherlands. That day, Hugo earned 13 coins (Fl 1,30), that was a very good result for that day. He calculated: if I had 100 viewers along the road, I should have made Fl 130,-- that day, that was a lot of money. This was the start to build the viewers in series and exploit it around the country. |
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Hugo de Wijs in his first 'workshop' |
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| In the cold winter of 1963 he started building a series of 20 viewers in his first workshop. This was on the attic of an old house, without heating. | |
Outdoor model 1965 |
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| Lenses: 2 plan convex lenses
of glass Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x28 mm. amount of slides: 19 Slide drum: pram wheel with wooden bars. Slide transport: with lever. and coin operated. Illumination: daylight via mirror. This was the first official rotary viewer exploited for tourist information along the road. It showed 3D slides of attractive sights of the town accompanied with an explaining text next to the slide. On the side of the viewer cover, a map of the surrounding area was placed. |
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Outdoor model 1970 and vandalism |
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| Lenses: 2 plan convex lenses
of glass Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x28 mm. amount of slides: 19 Slide drum: pram wheel with wooden bars. Slide transport: with lever. and coin operated. Illumination: daylight via mirror. It is very hard to design a viewer which is resistant against vandalism. The housing is already made of 2 mm. thick stainless steel but even then they manage to break in to get the money. |
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Museum and Exhibition (indoor) viewers
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41x101 mm. and 60x130 mm. table viewers. |
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| Left viewer: Lenses: single achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x28 mm. amount of slides: 21 Slide drum: aluminum pan with aluminum bars. Slide transport: turning knob Illumination: bulb lamp. |
Right viewer: Lenses: achromatic Focal distance: 100 mm. adjustments: hand focusing slide frame format: 67x130 mm. slide format: 55x55 mm. amount of slides: 17 Slide drum: aluminum pan with aluminum bars. Slide transport: turning knob Illumination: bulb lamps. |
| In 1976 Hugo started to build indoor viewers for the demand of museums and exhibitions. | |
41x101 mm. exhibition viewer with flat front plate |
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| Lenses: achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x28 mm. amount of slides: 21 Slide drum: aluminum pan with aluminum bars. Slide transport: with lever. Illumination: bulb lamp. This viewer is technically the same as previous models but than with a flat front plate to be able to build the viewer against walls. |
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Tables for the viewer |
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| For some particular assignments we started to develop special tables for the viewers. Above the viewers an advertisement panel can be mounted. | |
Coin operated model |
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| Very rare was the model for indoor use with coin activation of the illumination. | |
Rotary viewers build in back of cow and zebra. |
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| For an exposition of African textile. The viewer had to be mounted in a backside of cow and zebra. This was a real eye catcher for the public! | |
Agency of tourism stand |
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| The National Dutch institute for tourism ordered 16 rotary viewers and slides for a travel show through Europe to promote the Netherlands. This was a very hard job to finish the whole order in three month, including the 3D photography and mounting. | |
Motor driven rotary viewer |
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| For an exposition in Italy, we made a totally automated model with motor drive. | |
Rotary viewer model 1996 |
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| Lenses: double achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x33 mm. amount of slides: 21 Slide drum: aluminum casted drum. Slide transport: pulling lever up and down. Illumination: PL tube light |
This was the first rotary viewer made using the latest techniques of manufacturing; CNC steel plate cutting, CNC made lens tubes and drum. The alignment of the slides was for the first time guaranteed without any adjustments. The casing wasn't that well welded so it took a lot of time to make it fit with the inside mechanical part. This model was a real success. But it still took a lot of time adjusting the viewer because of the lever construction. Total assembling time is 10 hours. |
Five unit, single slide viewer |
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| This stainless steel slide viewer contained 5 fixed focus viewers with illuminated text on top of it. It was made to mount the viewer against walls for 3D advertising pictures. Afterwards, the model seemed to be to expensive for showing just 5 pictures. We don't make it anymore. | |
Build in single slide viewers |
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| In big expositions many one slide 3D viewers are build in walls. They were mounted under 45 degrees and located on different heights so that even children are able to look in some viewers. | |
10 slide rotary viewer model 2000 |
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| Lenses: double achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x33 mm. amount of slides: 10 Slide drum: aluminum milled drum. Slide transport: Turning the knob at the side. Illumination: PL tube light |
This viewer was designed as a request for one of the pavilions at the Hanover world exposition of 2000. We build 20 of them and it appeared to be a success for its small amount of slides in combination with these kind of expositions. The design was rather expensive and the slide advance mechanism was difficult to adjust but the concept is kept in mind for future models. |
6-slide rotary viewer model 2000 |
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| Lenses: single achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x33 mm. amount of slides: 6 Slide drum: aluminum milled drum. Slide transport: Turning the knob at the side. Illumination: PL tube light power: 220 Volts |
This viewer should have been a cheap alternative for the large 21 slide rotary viewer. But it appeared to be too expensive for just 6 slides. The viewer sold well but all customers thought it was a little expensive. Also we were not really satisfied with the lenses. They were good but rather cheap and did not have the optical quality as the big 21 slide rotary viewer has. Also the use of the external tube light transformer and timer made the viewer a bit clumsy to install. |
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10-slide rotary viewer model 2003
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| Lenses: double achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. slide format: 24x33 mm. amount of slides: 10 Slide drum: aluminum milled drum. Slide transport: Turning the knob at the side or motor Illumination: CCFL lamp power: 12 Volts dc adapter. |
The market asked for viewer which had more than 6 and less then 21 slides and looked modern. This 10-slide viewer concept appeared to be a success. The first series in this shape was made in a quantity of 40 pieces. The internal construction was a challenge. It had some weak points such as the clumsy pushbutton and the exchange of slides, the CCFL lamp was not enough protected against damage and the electronic circuit had some stupid design faults, of coarse afterwards solved. Taking these things into account, it is nice viewer and soon it asked for a successor model 2006 |
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Panel viewer 2004
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| Lenses: single achromatic Focal distance: 60 mm. adjustments: fixed focus slide frame format: 41x101 mm. or 50x50 mm. slide format: 24x33 mm. / 24x36 mm. amount of slides: 1 illumination: external light source |
This viewer should cover the need for a simple build in a wall viewer for exhibitions. The idea was to make it from laser cut stainless steel plate material. The concept was good but the labor for mounting took a lot of time and made it expensive for us. We made 50 pieces of them. Some large numbers went to one single customer. The solution came with its successor panel viewer 2005. |
