May 31, 2020, 10:42:48 am

News:

Hope all members are healthy and well


A triumph of Swiss engineering

Started by Alex Lipton, June 30, 2018, 08:00:46 pm

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

Alex Lipton

Dear All:

Here are all three knows Kern Focalpines 6, 7, 10.

Although 6 is shown in Seeger's maroon book, it is very rare.

The Focalpine 7 is most interesting since it is one of the very few MILITARY central focus binos - this one for the RAAF.

Comments welcome

Best

Alex

Niall McLaren

A nice clutch - I like the RAAF one especially. ;)
"A little bit of something beats a whole lot of nothing." - Little Richard

Alex Lipton

Thanks. What I like most is that they use INTERNAL focusing like U-Boot 7x50.
All three have the same body.

Rodolfo Peirano

Congrat Alex,
very nice binoculars. I agree with Niall about the RAS one.
I did not know that England had even bought from Switzerland  :)
everyone can learn from everyone - Rodolfo

Alex Lipton

Thanks Niall and Rodolfo,

Much appreciated.

RAAF is Royal Australian Air Force.

Best

Alex

Rodolfo Peirano

RAAF is Royal Australian Air Force.

Ops. . .sorry for my mistake  :-[ :-[ :-[
everyone can learn from everyone - Rodolfo

Frank Lagorio

June 30, 2018, 11:17:32 pm #6 Last Edit: June 30, 2018, 11:44:42 pm by Frank Lagorio
That's the first 6x Focalpin I've actually seen although I've seen it referenced in advertisements. 

I had one of the 10x60's and its build was unusual and highly innovative. For one thing its internal focusing was achieved not by movement of an eyelens but by movement of a 3rd objective lens located behind an air-spaced tele-objective lens. Also, its ocular end prisms are not normal Porro I prisms. One slope of the prism is set at 45 degrees to the base, but the other slope (the slope first receiving the light beam) is not necessitating a reflective coating (probably silver) be applied to its surface in order that all the light be reflected i.e. total internal reflection be achieved. 

Alex Lipton

Hi Frank,

These inner working bits are highly fascinating!

I take my hat off to you for not being afraid of disassembling these precious instruments and being able to put them back together!

As I said - a real triumph of Swiss engenuity.

Best

Alex

Winfried Tuerk

Kern developed and offered really a great varity of optical gear. I have got a couple of civilian and military binoculars and all copies are inovative and really well made.

My near mint Alpine Stereo 8x30 is the sharpest 8x30 Porro-1-binocular of the collection.

https://www.kern-aarau.ch/kern-extern/produkte-von-a-bis-z.html
living without binoculars is possible but senseless - paraphrasing Loriot "living without puc is possible ..."

Alex Lipton


Winfried Tuerk

Yes Alex, the model with the focus weel at the distal end of the axis.

The fov is sharp up to the edges. All mechanics work smoothly and everything is made as solid as possible.

While Kern continued to made high grade products, in the 1960's Germany many manufacturers of optical gear diligently were going to reduce mechanical quality. Maybe due to the quantities of cheap Japanese binoculars flocking Europe?
living without binoculars is possible but senseless - paraphrasing Loriot "living without puc is possible ..."

Niall McLaren

Kershaw (post WW2) also placed the focus wheel at the objective end. It took a little getting used to (I'm a traditionalist) but after a while seems totally natural.

I've had a few Kerns but not Focalpines and appreciate the photos you've all posted. Frank's disassembled shots are particularly illuminating. ;)
"A little bit of something beats a whole lot of nothing." - Little Richard

Alex Lipton

A couple more instruments from Kern.

Alex

Rodolfo Peirano

Alex  XPS files :-\  (Microsoft's alternative to PDF files) better PDF or JPG  ;)

everyone can learn from everyone - Rodolfo

Alex Lipton

Thanks Rodolfo,

Will keep in mind for the future.

Alex