JML Optical is now Thorlabs Lens Systems

Hopefully Thorlabs will enter the large format high resolution line scan/macro lens market wth the acquisition of JML. Currently Thorlabs only offers low-end small sensor, 1/2", 2/3", 1", and 4/3" sensor format lenses for machine vision.

Thorlabs Acquisition of JML Optical

Newton, NJ and Rochester, NY – January 16, 2023

“Over the last five decades, the JML Optical team has repeatedly set benchmarks for lens component and lens assembly development,” said Bob Bicksler, President & CEO of JML Optical. “We take pride in being a leader in providing optical solutions. We see this combination as an excellent opportunity to increase exposure to our products through the extensive global reach of Thorlabs."

The JML Optical team will remain in Rochester, New York and form a new Thorlabs entity called Thorlabs Lens Systems, Inc. (TLS). Operating as an R&D and production facility, TLS will add to Thorlabs’ existing optics manufacturing footprint, which currently occupies 120,000 square feet of vertically integrated production space within Thorlabs’ campus of buildings in Newton, NJ and another 24,000 square feet within its facilities in South Carolina and California.

JML Optical is a precision-engineered custom optical solution provider. We offer optical and optomechanical design, rapid prototype, glass and metal fabrication, thin-film coating, metrology, environmental testing, and full assembly for a one-stop solution. JML Optical Industries, LLC is a privately owned company.

Thorlabs, a vertically integrated photonics products manufacturer, was founded in 1989 to serve the laser and electro-optics research market. As that market has spawned a multitude of technical innovations, Thorlabs has extended its core competencies in an effort to play an ever-increasing role to serve the Photonics Industry at the research end, as well as the industrial, life science, medical, and defense segments.

https://www.jmloptical.com/

https://www.thorlabs.com/

Printing-NIKKOR 95mm F2.8 Tech Notes

Recently I came across an interesting Printing-NIKKOR 95mm F2.8 for sale in Japan. The ad gave me a really good example to share some important details that a typical buyer would miss, but would stop me from buying this copy for sure. Besides the obvious coating issues and overall rough shape there are two important details.

Rear Cover Missing

In the middle of the blue circle on the left you can see a small indention in the lens. The indention itself is normal but the fact that you can see it is the problem. The indention was created when the set screw that holds the rear sleeve in place was secured at the factory. The probem now is that the entire outer mounting sleeve that covers the rear of the lens is missing. Trying to find a replacement cover is going to be very difficult and expensive and not worth the trouble.

In the photo at the bottom of this post you can see two examples of lenses with the two knurled rings and the M45 thread mount. Printing-NIKKOR lenses have two knurled rings, one at the front for aperture control and one at the rear for mounting.

Calibration Marks

Since the rear cover of this lens is missing, this is the perfect opportunity to point out calibration marks, circled on the far right. Normally these are hidden from view. We have seen under performing Printing-NIKKOR copies sent to our office that were way out of calibration. At the rear of a Printing-NIKKOR there are two sets of calibration marks and when viewed straight on the two pairs on this lens do line up. At least this lens copy is still calibrated.

This lens is not worth the $500 asking price due to the missing rear cover and the coating issues, I would stay away even if the asking price was less than $100.

We do hope this information will help a potential Printing-NIKKOR buyer find a clean sharp copy for a fair price. The Printing-NIKKORs are very highly recommended and some of our favorite lenses of all time!

Tochigi Nikon Rayfact Press Release info

Nikon Rayfact website start page from 2002!

We were able to track down some old Rayfact press releases from their website. Some of the information, like the production numbers are really interesting! This explains the rarity and extreme prices for some Rayfact lenses.

Nikon Rayfact 7x
From: Tochigi Nikon Co., Ltd.
Release Date: June 2, 2005
Model: OFM70350HN-TS
Production: 200 units (per year)
Price: $19,250 USD for 1 unit and 8 to 10 week delivery
Press release: Ideal for fine pattern inspection of flat panel display substrates and printed circuit boards. It has an image circle of φ64mm and is compatible with large line sensors.
Notes: Rayfact noted that the coaxial model OFM70350HN-TP was extremely expensive.

Nikon Rayfact 3.5x
From: Tochigi Nikon Co., Ltd.
Release Date: May, 2005
Model: OFM35162MN
Production: 200 units (per year)
Price: 1,108,000 JPY for 1 unit ($7,954.00 USD today)
Press release: Optimal reference magnification for enlarging fine patterns on a large line scan sensor.
Notes: Very good lens but rare on the used market.

Nikon Rayfact 80mm F4 (Rayfact GF 80mm f/4 0.47x)
From: Tochigi Nikon Co., Ltd.
Release Date: February 4, 2005
Model: QVM0504MF
Production: 500 units (per year)
Price: “extremely expensive” quote from Rayfact Japan.
Press release: inspection of various industrial products; liquid crystal, printed board, TAB, sheet etc. Reliability is ensured by providing lock screws for focus adjustment and aperture adjustment.
Notes: For high-resolution camera with CCD pixel pitch corresponding to 4.7 μm. The Nikon Rayfact 80mm F4 would be renamed the Nikon Rayfact GF 80mm f/4 0.47x. The Rayfact GF is an excellent performer and was designed to cover a 24 x 36mm sensor. You can find a couple of tests here on Closeuphotography.com:

https://www.closeuphotography.com/nikon-rayfact-gf-lens

https://www.closeuphotography.com/2x-lens-test-2018

Nikon Rayfact 2x (95mm F2.8)
From: Tochigi Nikon Co., Ltd.
Release Date: August 30, 2006
Model: OFM20119MN
Production: 500 units (per year)
Price: 1,314,390 JPY new for 1 unit ($9,436.60 USD today)
Press release: As the resolution of line sensors used for inspection continues to increase, so does the demand for higher performance lenses. In addition, due to factors such as environmental considerations, there is an increasing demand for lenses that use eco-glass that does not contain lead or arsenic. High resolution and performance uniformity are ensured from the center to the periphery of the image, and distortion is reduced, so even with a large line sensor, a uniform image can be obtained over the entire surface. 
Notes: one of the best performing lenses we’ve ever tested and one of our favorite lenses of all time. See these here pages on Closeuphotography.com for more info:

https://www.closeuphotography.com/printing-nikkor-95mm-test

https://www.closeuphotography.com/2x-lens-test-2022

This Just in: Pacific Image PrimeFilm 120 Pro Medium Format Film Scanner

The PrimeFilm 120 Pro (PF120) is medium format film scanner hardly ever seen on the used market and as far as we know, the only medium format film scanner still sold new in 2023. Fedex dropped one off today and we’re looking forward to testing it. In addition to testing the PF120 lens we’ll also be sure to take a close look at the CCD sensor. This should be a very interesting test!

This is the latest PrimeFilm 120 Pro model, the earlier PrimeFilm 120 model is equipped with a silver case and was sold other markets as the Reflecta Medium format Scanner MF5000
, and as the Braun FS-120 medium format film scanner
. Both the Reflecta and Braun modeles are no longer sold new.