Matthijs Glastra
Analyst · CJS Securities
Thank you, Ray. Good morning, everybody, and thanks for joining our call. Novanta continued its strong 2017 momentum and delivered another great quarter, beating both our revenue and profit guidance. Our company delivered $147 million in revenue, representing 35% year-over-year reported revenue growth and 9% year-over-year organic revenue growth. This is our 6th consecutive quarter of high single-digit or double-digit organic growth.
Our adjusted EBITDA was $28.4 million, which is up 41% versus last year. We expanded our EBITDA margins year-over-year by 80 basis points to 19.3% of sales. Our adjusted earnings per share was $0.47, which was up 52% from $0.31 in the first quarter of 2017. In addition, we delivered solid cash flows with operating cash flow growing by 60% year-over-year to $20.4 million in the first quarter.
At Novanta, our mission is to deliver innovation that matters providing mission-critical functionality to our OEM customers, while improving end-user productivity, enhancing people's lives. We believe that the strength of our team and our robust business model and diversified applications with a balanced exposure to medical and advanced industrial markets are serving us well.
In the quarter, we continue to see broad-based growth momentum across the company with all 3 operating segments, demonstrating double-digit year-over-year reported review growth. We also had a very strong order book performance with an overall book-to-bill of 1.14, with all our businesses showing a positive book-to-bill performance.
As we've reported in previous calls, we are experiencing broad-based strengths within a majority of our end markets, including life science, minimally-invasive surgery and advanced industrial. Key growth applications where we deliver innovation that matters are DNA sequencing, robotic surgery, endoscopy, advanced laser material processing and precision automation. We continue to make good progress on our strategic growth priorities driving long-term organic growth through commercial excellence and innovation. The highlight this quarter was our new product revenue, which doubles year-over-year. Our vitality index, which is revenue from new products launched in the last 4 years is now on solid double-digit territory.
Our revenue in the first quarter from China increased by more than 35% versus last year and a number of design wins grew double-digits. We believe these indicators support our medium-term organic growth guidance of 5% to 7% on average. You will hear more details on the quarter in the outlook for the year, from Robert, but the first quarter results give us confidence in the full year 2018 outlook. We also continue to execute on disciplined acquisitions that deepen our presence and competitive differentiation in secular growth markets. Just a few days ago, we announced a very nice tuck-in acquisition, Zettlex as part of our Precision Motion business, Celera Motion. We see a growing demand for Precision Motion technology in robotics, precision automation and key medical markets, and we're excited to add a complementary technology to our Precision Motion offerings with the Zettlex acquisition. Zettlex based in Cambridge England is a supplier of inductive encoders that can provide absolute and accurate positioning even in extreme operating environments. And although the Zettlex business is still relatively small, it is seeing strong demand for their compact, accurate, lightweight and robust position sensors. Adding Zettlex to our portfolio expands Celera Motion's addressable market and provides an in-house source for mechatronic solutions to look Celera Motion customers. We believe that we can help to accelerate Zettlex's growth through the global Novanta customer relationships and sales channels.
Zettlex has approximately 40 employees and won the Queen's Award for innovation in 2017 and for International Trade in 2018. Zettlex was founded by Darren Kreit and Mark Howard, who have agreed to remain with the business. We are excited to team up with Darren and Mark and their talented team to jointly expand our mutual businesses.
Now let me turn to our operating segments. Our Precision Motion segment continued to be a strong growth engine for us with 14% year-over-year revenue growth and a very strong order book with book-to-bill of 1.31 in the quarter. As we discussed before, we're excited about the Precision Motion space and are increasing investments organically and through acquisitions in this business. We discussed before that our precise and dynamic motion control functionality plays very well into multiple markets with structural growth dynamics such as precision automation, robotics, autonomous vehicles and robotic surgery markets.
We expect the Zettlex acquisition to have a meaningful impact on the long-term growth trajectory of the Celera Motion business. And within the Precision Motion segment, new product revenue more than doubled, and our China revenue grew more than 45% versus last year, as we are bringing new innovations to market and are expanding our commercial teams. We are also encouraged with the sequential increase of 120 basis points of gross margin in this segment as the teams are steadily working through the supply-chain issues we reported on earlier.
Turning to our Photonics segment, which delivered revenue growth in the quarter of 22% year-over-year. Bookings performance was again strong across the board, resulting into a book-to-bill performance of 1.08. Growth was primarily driven by DNA sequencing and beam delivery as well as by commercial execution in an improving industrial climate. New product revenue was up more than 50% versus last year. Applications with strong performance were laser additive manufacturing, marking and coding, converting, via hole drilling, DNA sequencing and micromachining.
Now we're very pleased to see the continued growth and operations execution in our Cambridge Technology business which, again, delivered record bookings with broad momentum across multiple applications. We continue to see strong demand for our Scan Head products and we are seeing particularly strong demand for our market-leading Lightning II Scan Head. As we discussed before, this is an intelligent subsystem, ideally suited for applications such as laser additive manufacturing, via hole drilling and micromachining.
Laser Quantum had another great quarter, achieving very significant growth year-over-year in the quarter, driven by increased volume growth and Novanta content in the growing DNA sequencing market. Laser Quantum was acquired in January of last year and therefore, contributed to our organic growth performance in the first quarter. And as we reported in previous calls, following last year's ramp in a new-generation of DNA sequencing machines, we believe that going forward, the growth in this business will normalize to market growth rates.
Finally, we're pleased with the productivity, operations and mix execution of the Photonics segment, which led to an increase of 280 basis points in adjusted gross margin in the first quarter versus the prior year.
Turning to our Vision segment, which includes 2 businesses, Minimally Invasive Surgical Technologies, or MIS for short and Detection & Analysis. The MIS group includes NDS and WOM and is focused on endoscopy and robotic surgery applications. The Detection & Analysis group includes our JADAK business and is focused on reducing medical errors, improving workflow and patient outcomes in applications such as minimally invasive surgery, patient monitoring, life sciences and clinical lab equipment. In the first quarter, our Vision segment delivered 72% year-over-year revenue growth, primarily driven by our WOM acquisition. New product revenue in the first quarter more than doubled versus last year and the book-to-bill in our Vision segment was 1.11, with solid bookings in both businesses.
Our WOM business delivered ahead of our expectations, driven by customer delivery timing. As a result, we expect the second quarter for WOM to be down sequentially. Also as a reminder, WOM will be included in our organic growth performance in the second half of 2018, and as we have discussed, in the last few earnings calls, organic growth comps for WOM will be tough in the second half of 2018 due to the pull-in effects into the second half of 2017 as a result of EU regulatory changes. But we remain very positive on WOM's innovation pipeline and long-term growth prospects. WOM recently launched 2 new insufflator products, which are seeing good momentum with endoscopy OEMs. We're also seeing strong expansion of their consumable business, which have lower margin. We expect these margins to improve somewhat in 2018, but stay well below company average until we open a new low-cost disposable factory in 2020.
We're pleased with the continued momentum over NDS endoscopic displays product line. In the quarter, NDS delivered our fifth consecutive quarter of year-over-year organic revenue growth, driven by new products such as 4K displays and wireless products. We expect the business to be a net contributor to our revenue and profit growth in 2018.
Consistent with our previous earnings calls, our Detection & Analysis business saw organic revenue declines, driven by old legacy product lines and regulatory changes in diabetes care. We continue to stay on track with working through these headwinds by the second half of the year when we expect this business to return to growth. We also see great design-win activities and double-digit growth revenue momentum in RFID. As discussed before, RFID demand in healthcare is increasing as there is a growing need to identify, track and connect devices, medications and patients for optimal workflow and patient safety.
In wrapping up my section, we're very pleased with the organic revenue growth and profitability that we achieved in the first quarter as well as our Zettlex acquisition. We're confident about our 2018 outlook, as Novanta's leadership positions across key medical and industrial markets combined with our disciplined approach to M&A is providing a solid foundation for sustainable, profitable growth.
So with that, I will turn the call over to Robert to provide more details on our financial performance. Robert?