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This section provides an overview for photon counters as well as their applications and principles. Also, please take a look at the list of 7 photon counter manufacturers and their company rankings. Here are the top-ranked photon counter companies as of June, 2025: 1.Excelitas Technologies Corp., 2.Stanford Research Systems.
Table of Contents
A photon counter is a sophisticated electronic device used for counting photons, the smallest units of light. This technology is essential in scenarios where capturing and counting minuscule amounts of light from an object is critical for analysis.
Photon counting enables the observation of objects by individually counting photons and analyzing their energy in completely dark environments. This process involves a detector for photon detection, an amplification unit for signal enhancement, and a counting unit, which is the photon counter itself, to process and digitize the signal for further analysis.
Photon counters are integral in fields where detecting small amounts of light is necessary. They are used in photoluminescence, electroluminescence, chemiluminescence, and bioluminescence studies. In medical applications, photon counting CT technology stands out for its ability to perform scans with lower X-ray radiation levels than traditional methods.
Photon counters operate by capturing light in minimal quantities and analyzing both the quantity and energy of photons. These devices process signals from single-photon detectors, which produce a pulsed signal upon photon entry. An amplifier, either independent or integrated into the detector or counter, amplifies this signal.
The number of signals per unit time indicates the light's intensity, while the signal size reflects the energy of individual photons. These counters convert analog signals into digital data for analysis on a PC, making the matching performance and characteristics of the detector and amplifier crucial.
When selecting a photon counter, time resolution is a key performance metric. This resolution determines the ability to separate and measure individual photons when they arrive in rapid succession. The lowest time resolution among the detector, amplifier, and counter components limits the system's overall performance. Hence, ensuring compatibility and matching performance characteristics among these components is vital for optimal functionality.
*Including some distributors, etc.
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Excelitas Technologies Corp., headquartered in Waltham, USA, is a manufacturer of photonic solutions. The company provides photonic solutions for the illumination, optical and imaging needs of the OEM and end-user customers. The products like cameras, sensors and light sources serve an array of applications across many sectors. These range of applications include clinical diagnostics, autonomous vehicles and X-ray security screening. The company also offers bespoke photonic solutions such as discrete components, sub-assemblies, or complete turnkey solutions tailored to the customers' specific requirements.
VAREX IMAGING, a company founded in 2016 and headquartered in Salt Lake City, Utah, United States, is a manufacturer in the medical imaging industry. The company specializes in producing X-ray components and solutions. Its diverse product range includes X-ray tubes, digital detectors, high voltage interconnect, and imaging software, catering to hospitals, clinics, and research centers. The company’s technologies empower healthcare professionals with precise diagnostic tools for accurate medical evaluations. Backed by ISO certification, the company's customer service ensures integration and support for its advanced imaging systems.
Stanford Research Systems, located in Sunnyvale, California, has been a designer and manufacturer of test equipment for engineers and scientists since the early 1980s. Its products find applications in various research fields. Its lock-in amplifiers are utilized for recovering nanovolt signals from noisy backgrounds. Additionally, its mass spectrometers can measure residual vacuums down to 10-14 Torr. Its RF signal generators, digital delay generators, and clock synthesizers provide accurate and stable frequency and timing signals. Operating from a 75,000-square-foot facility, the company has collaborated with NASA to adapt its RGA100 quadrupole mass spectrometer for operation in space vacuum conditions.
Ranking as of June 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Excelitas Technologies Corp. |
60.0%
|
| 2 | Stanford Research Systems |
40.0%
|
Derivation Method
The ranking is calculated based on the click share within the photon counter page as of June 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
2 | 100.0% |
24 products found
24 products
Howa Sangyo Co., Ltd.
250+ people viewing
Last viewed: 20 hours ago
The 2-dimensional CdTe photon counting detector WERPAD (Wide Energy Range Pixel Array Detector) is a next-generation X-ray/gamma ray camera equippe...
Optomechatro Co., Ltd.
220+ people viewing
Ultra-weak light measurement can be directly connected to a PC using a USB cable. Photomulti control signals and measurement data can be transferre...
Optomechatro Co., Ltd.
270+ people viewing
Last viewed: 1 day ago
Low-level light measurement can be directly connected to a PC using a USB cable. Photomal control signals and measurement data can be transferred v...
Cons Technology Co., Ltd.
430+ people viewing
Last viewed: 7 hours ago
It is an independent 2 -channel Gate -Ted Fotton counter that can be counted at a rate of up to 200MHz. It is used for the count of the current pul...
Hamamatsu Quantum Co., Ltd.
80+ people viewing
Last viewed: 35 minutes ago
■Features ・This is a one-photon level luminescence/fluorescence measurement device that uses a photomultiplier tube with wavelength sensitivity th...
Hamamatsu Quantum Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
■Features By cooling the photomultiplier tube with an air-cooled Peltier device, observation in the one-photon region is possible. One photon of l...
Hamamatsu Quantum Co., Ltd.
80+ people viewing
Last viewed: 3 hours ago
■Dark Counts By electronically cooling the photomultiplier tube with an air-cooled Peltier element, we succeeded in reducing DarkCounts, which was ...
Hamamatsu Quantum Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
The HQ150 photomultiplier tube (PM) amplifier converts a single photoelectron pulse from a photomultiplier tube into a 5V digital signal using an a...
