The Company’s Chief Operating Decision Maker (“CODM”) utilizes financial information to make decisions about allocating resources and assessing performance for the entire Company. The Company evaluates the performance of, and allocates resources to, its segments based on revenue, gross profit and operating profit. The Company’s reportable segments have been identified based on commonality and adjacency of technologies, applications and customers amongst the Company’s individual product lines. The Company determined that disclosing revenue by specific product was impracticable due to the highly customized and extensive portfolio of technologies offered to customers.

Based upon the information provided to the CODM, the Company has determined that it operates in three reportable segments: Photonics, Vision, and Precision Motion. The reportable segments and their principal activities consist of the following:

The Photonics segment designs, manufactures and markets photonics-based solutions, including laser scanning, laser beam delivery, CO2 laser, solid state laser, ultrafast laser, and optical light engine products to customers worldwide. The segment serves highly demanding photonics-based applications for advanced industrial processes, metrology, medical and life science imaging, DNA sequencing, and medical laser procedures. The vast majority of the segment’s product offerings are sold to OEM customers. The segment sells these products both directly, utilizing a highly technical sales force, and indirectly, through resellers and distributors.

The Vision segment designs, manufactures and markets a range of medical grade technologies, including medical insufflators, pumps and related disposables; visualization solutions; wireless, recorder and video integration technologies for operating room integrations; optical data collection and machine vision technologies; radio frequency identification (“RFID”) technologies; thermal chart recorders; spectrometry technologies; and embedded touch screen solutions. The vast majority of the segment’s product offerings are sold to OEM customers. The segment sells these products both directly, utilizing a highly technical sales force, and indirectly, through resellers and distributors.

The Precision Motion segment designs, manufactures and markets optical and inductive encoders, precision motor and motion control sub-assemblies, servo drives, air bearings, and air bearing spindles to customers worldwide. The vast majority of the segment’s product offerings are sold to OEM customers. The segment sells these products both directly, utilizing a highly technical sales force, and indirectly, through resellers and distributors.

Revenue, gross profit, gross profit margin, operating income (loss), and depreciation and amortization expenses by reportable segment were as follows (in thousands, except percentage data):

	Three Months Ended
	April 3,		March 29,
	2020		2019
Revenue
Photonics	$	55,140	$	59,225
Vision		69,008		65,936
Precision Motion		31,320		32,025
Total	$	155,468	$	157,186

	Three Months Ended
	April 3,			March 29,
	2020			2019
Gross Profit
Photonics	$	24,661		$	27,314
Vision		26,575			25,973
Precision Motion		13,908			13,521
Unallocated Corporate and Shared Services		(699	)		(519	)
Total	$	64,445		$	66,289

	Three Months Ended
	April 3,			March 29,
	2020			2019
Gross Profit Margin
Photonics		44.7	%		46.1	%
Vision		38.5	%		39.4	%
Precision Motion		44.4	%		42.2	%
Total		41.5	%		42.2	%

	Three Months Ended
	April 3,			March 29,
	2020			2019
Operating Income (Loss)
Photonics	$	8,915		$	12,310
Vision		5,634			4,557
Precision Motion		6,538			5,635
Unallocated Corporate and Shared Services		(7,837	)		(8,109	)
Total	$	13,250		$	14,393

	Three Months Ended
	April 3,		March 29,
	2020		2019
Depreciation and Amortization Expenses
Photonics	$	2,649	$	2,621
Vision		5,277		5,029
Precision Motion		1,353		1,369
Unallocated Corporate and Shared Services		51		55
Total	$	9,330	$	9,074

The Company aggregates geographic revenue based on the customer location where products are shipped. Revenue from these customers was as follows (in thousands):

	Three Months Ended
	April 3,		March 29,
	2020		2019
United States	$	59,205	$	64,760
Germany		23,233		23,477
Rest of Europe		33,085		30,770
China		15,404		15,108
Rest of Asia-Pacific		21,700		20,447
Other		2,841		2,624
Total	$	155,468	$	157,186

The majority of revenue from our Photonics, Vision and Precision Motion segments is generated from sales to customers within the United States and Europe. Each segment also generates revenue across the other geographies, with no significant concentration of any segment’s remaining revenue.

The Company primarily operates in two end markets: the medical market and advanced industrial market. Revenue by end market was approximately as follows:

	Three Months Ended
	April 3,			March 29,
	2020			2019
Medical		58	%		50	%
Advanced Industrial		42	%		50	%
Total		100	%		100	%

The majority of revenue from the Photonics and Precision Motion segments is generated from sales to customers in the advanced industrial market. The majority of revenue from the Vision segment is generated from sales to customers in the medical market.