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Light Choppers
Intercept current or beams of radiation on a periodic basis.
See Also: Light Sources, Optical Heads
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Optical Components for Custom Spectroscopy
HORIBA offers a wide variety of optical accessories. We have optical choppers which pulse continuous light sources. Explore our order sorting filter wheels for spectrographs and monochromators. Choose from our optical fibers and light guides, with flexible light delivery, single fibers, fiber bundles, and liquid light guides. And select from our lens and mirror-based sample compartments.All of these accessories are compatible with our various optical components. Our optical accessories allow us to complete a custom solution for your unique configuration requirements and a variety of spectroscopy applications. HORIBA offers more choices to ensure you can select the best optics for your needs.
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Resonant Chopper Systems
Electro-Optical Products Corp.
An external clock signal, to provide an ultra stable modulating optical beam motion [sub] system. The system can be used as a "stand alone" unit, in the laboratory, or can be incorporated into a larger instrument/system. The chopper is ONE FIXED FREQUENCY, picked from the range of 5 Hz to 20 kHz. The chopper is a small size, light weigh, low cost and long life device. It requires low power drive electronics and does not radiate electromagnetic interference (EMI). It has high frequency stability and high amplitude stability. The chopper is IR, VIS and UV and high vacuum capable. Reference signal and position output available.
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High Speed Optical Choppers
The Optical Choppers offered by Hinds Instruments are resonant devices designed to work at one frequency. We offer two ways to chop light: a High Speed Optical Chopper (HSOC) and a Photoelastic Modulator (or PEM).
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Reflective Condenser
Reflective condensing system and focusing accessory for coupling light sources to monochromators. It uses two mirrors to focus to the entrance slit. The reflective system eliminates chromatic aberration, provides maximum spectral range, and does not require refocusing. Accessories like light choppers and filter wheels can also fit inside next to the slit. Versions with rotatable mirror available for up to four source direction.
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Electrostatic Fieldmeter
Model 775
The pocket-sized Simco-Ion Model 775 Handheld Electrostatic Fieldmeter is designed to locate and measure static charge potentials on product, people, equipment and packaging. The Model 775 Fieldmeter uses a non-contacting, chopper stabilized field sensor and a ranging light mechanism to ensure correct measurements of electrostatic fields in all areas—even those using air ionization.
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Detection Electronics
Our detection electronics portfolio comprises all the detection electronics elements required for the operation and automation of a high quality light measurement system, including photo-detector signal recovery and digitisation (with fully programmable DC, AC and lock-in amplifiers having current/ voltage inputs), high voltage supply, optical chopper control, detector thermoelectric cooler control and relay unit.
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Optical Chopper
These high stability variable frequency optical choppers each include a set of chemically blackened photoetched chopping discs. The mini chopper is an excellent choice for applications requiring a compact package. The chopping discs come in a variety of slot apertures and allow operation. Beam diameter is limited to 0.75mm when using the 200-slot disc and 1.0mm when using the 40 slot mini disc. The easy-to-interchange blades are made of non-magnetic, half hard brass and can be used in combination. Chopping frequency is set by adjusting a ten-turn dial or by applying an external DC voltage to the BNC input. Reference output is a TTL pulse and is in-phase with chopping action. The 5 digit led display gives a direct read-out of the chopping frequency. Power: 90-130V or 180-260V; 50/60Hz; 12VA max. Power supply included. Choppers are often used together with lock-in amplifiers.
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Rotating Optical Chopper
300C and 300CD
Scitec Instruments Model 300 is a high stability variable frequency optical chopper. The basic system consists of a control unit, a chopping head and a set of four chemically blacked photo etched discs. This system provides operation over the frequency range 5Hz to 3kHz.
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Digital Static Field Meter
Model 715B
- Assess electrostatic fields or charge on objects- Measures up to ±19.99 kV at a distance of 1 inch- Accuracy of <±5% in both normal and ionized environments- Uses a chopper stabilized sensor- LED ranging lights for positioning the meter at the right distance- Zero function allows the display to be adjusted to zero (0)- Hold feature to lock the reading on the display- Low battery indicator on the display- 1-year limited warranty
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Light Sources
There are many low cost artificial light sources used for illumination or for industrial applications: tungsten or halogen bulbs, fluorescent lamps, LED lamps etc. Some of these sources have regulated intensity of emitted light. However, there very few calibrated light sources of precisely known parameters. A light source can be considered as calibrated when its user can precisely regulate its photometric/radiometric parameters like luminance (or illuminance), radiance (or irradiance) at defined spectrum of interest. Such light sources are needed in many applications among them, in systems for testing night vision devices, VIS-NIR cameras and SWIR imagers. Inframet offers a series of calibrated light sources that can be divides into three groups:
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Light Meter
2330 LX
Standard Electric Works Co., Ltd
● Wide range for measurements up 40000 lux and 4000 fc.● 0.01 lux and 0.001 fc resolution for accurate low light level measurements.● Light sensor cover is included for preserving sensor life.● Auto off function.● Data hold function.● Low battery indication.● Over range indication.● Auto-ranged.● Manual-ranged.● Calibration mode is provided.● 9V battery system.● Selection key for lux and fc.● The spectral sensitivity close to CIE photopic curve.● Ideal tool for workplace, clean-room and computer room light testing.● Video, photographic, office, classroom, and architectural uses.
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Light Meters
LXP-10B
The new LXP digital light meter family allows for a very precise measurement of illuminanace. Thanks to very high resolution (resolution 0.01 lx ) allows for escape route emergency light measurement. All of three light meter have built-in memory for measurement result storing, and additional function making work much easier.
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Light Meter
LI-250A
The LI-250A is a portable meter that displays the output from any LI-COR light sensor that has a cable terminated with a BNC connector. It shows instantaneous values or 15-second averages of values from a sensor.
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Light Sources
Teledyne Princeton Instruments
Variety of different light sources for UV-VIS-IR operation. All sources are supplied complete with housings, integrated refocusing mirrors, power supplies, mounting flanges for IsoPlane, SpectraPro and TriVista entrance slits. Most include cooling fans for stable operation (except TS-425).
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Light Microscopy
Materials Evaluation and Engineering
MEE has a variety of light microscopes with magnifications ranging from 5X to 2400X. Each microscope is connected to a camera with digital image capture for subsequent measurements and/or additional image analyses.
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Ambient Light Sensor
VEML7700 (Qwiic)
Looking for a Qwiic sensor that can measure the ambient light level directly in lux? This is it! The VEML7700 is a high accuracy, 16-bit resolution, digital ambient light sensor in a miniature transparent 6.8 mm x 3.0 mm x 2.5 mm package.
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Structured Light
Structured light systems from ams enable 3D imaging applications to achieve extremely high accuracy. Accurate structured light technology is behind the user face recognition being implemented in smartphones. Structured light products and design expertise from ams help customers get to market quickly and scale up production rapidly.
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Light Meters
These Handheld Light meters are compact for keeping on hand in the field. Models are available with a Thermocouple input for temperature measurement. Units with Data Logging are available
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Light Sources
Modular sources are available for illumination, excitation and calibration, with options for UV, Visible and NIR wavelengths.
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Trailer Light Testers
Pro-Check 725
Pro-Check trailer light testers with advanced electrical diagnostics are rugged, lightweight, and economical. They independently test each electrical circuit on a trailer to ensure proper connectivity. The Pro-Check identifies each specific type of electrical wiring fault. Lite-Check’s patented active diagnostic system takes the guesswork out of identifying trailer light and electrical problems. The Pro-Check commercial trailer light tester with electrical circuit diagnostics, not only identifies faults, but the specific circuit the fault is on. Faults are identified as “Open Circuit”, “Open Ground”, “Short” (w/all circuits identified), or “Chassis Ground”. Audible alarms alert technicians to found electrical faults.
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Light Transmittance Meters
Shenzhen Linshang Technology Co., Ltd.
As a manufacturer of desktop spectrum transmission meter, Linshang Technology provides you with a series of light transmittance meters, including LS108A, LS108D lens transmssion tester for testing IR holes of mobile phone covers, and LS108 blue-violet tester for eyeglass lenses. Universal desktop light transmission meter LS108H, portable optical transmission measuring instrument LS183.
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Measuring Light Curtains
Leuze electronic GmbH + Co. KG
These devices are perfect for measuring moving objects as they pass by. The measurement results can be output via the fully integrated interface. At the same time, the programmable switching outputs allow downstream elements to be manipulated. Likewise, multiple light curtains can be cascaded. The nearly unlimited possibilities for configuring multiple measurement areas and evaluation functions make the devices problem solvers for a variety of measurement tasks. The range of available resolutions and measurement field lengths ensures optimum adaptation to your application.
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Spatial Light Modulators
Spatial Light Modulators (SLM) are used as adaptive optical elements that modulates light spatially in amplitude or phase. We offer devices that are based on either reflective (LCOS) or translucent (LCD) liquid crystal microdisplays.
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Light Meters
Light Meters are used to measure the light output of an illumination source for a number of optical applications. Light Meters are measurement devices that feature photodiodes to determine the level of light transmitted from a source. Light Meters possess simple, easy to read screens upon which measurements are displayed in one or more photometric units. Most Light Meters possess traceable NIST certification for proof of accuracy.
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Light Section Sensors
Leuze electronic GmbH + Co. KG
Switching light section sensors are designed to perform scanning, two-dimensional object detection along a laser line. They are especially well suited for completeness monitoring or product monitoring in the case of multiple track transport. The short measurement time and the detection range from 200 to 800 mm enable an inspection of the content at a high throughput rate even with deep containers. The internal data processing offers programming and differentiation of 16 different object types, thereby conserving control capacity. Complex detection tasks can be solved with one sensor. The compact housing ensures high flexibility during installation and saves installation space.
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Light Sources
Excelitas offers an array of illumination and lighting technologies with custom design capabilities aligned with customer requirements to deliver an illumination solution optimized to your specifications. From simply supplying a discrete LED, Laser, Lamp or UVC source to providing a complete, integrated system, Excelitas consistently delivers lighting solutions for the most demanding applications.
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Light Source
FiberPal OT-3000
The OT-3220/3221 is designed for a high performance stabilized laser source, especially in practice for FTTX networking installation and maintenance fieldworks environment requirements. It is usually applied as stable laser sources for wide range of optical testers and tools in optical fiber cabling and transmission systems.
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Low Light Sensors
The ever-evolving technologies push the lower limit of measuring the photon energy. Look no further than Newport to find a solution for low light sensing applications. Please see our Low Light Sensor Guide for additional information.
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