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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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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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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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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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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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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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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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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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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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Optical Chopper
SR540
Stanford Research Systems, Inc.
The SR540 chopper will handle all your optical chopping requirements?from simple measurements to dual-beam and intermodulation experiments. The SR540 has a 4-digit frequency display, front-panel frequency control, analog voltage frequency control and two reference outputs with selectable operating modes.
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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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Miniature Rotating Optical Choppers
350C and 350CD
Model 350 is a high stability variable frequency optical chopper. The basic system consists of a control unit and a chopping head. It is supplied with four chemically blacked 30 mm diameter discs. These discs are of 2, 4, 10 and 40 slots and allow operation over the frequency range 10 Hz to 10 kHz.
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Large Rotating Disc Optical Chopper
L340CD
An optical chopper based on 200 mm diameter discs. The larger disc size allows larger diameter beams to be chopped.
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Ultra Miniature Rotating Optical Chopper
360C
A small compact low cost system suitable for OEM use. 10 Hz - 14,000 Hz standard chopping frequency range.
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Light
Welcome to Thorlabs; below you will find links to light emitters, sources, and controllers, a subset of our entire line of photonics products. Our light sources are conveniently separated into coherent and incoherent sources. The coherent source category includes laser diodes, laser diode modules, tunable lasers, HeNe lasers, and femtosecond lasers, while the incoherent source link brings you to a selection of LEDs, white light, and broadband SLD sources. The Quantum Electronics category includes optical amplifiers, modulators, and gain elements that are frequently used in research and OEM applications. All of our light sources and optical amplifiers are supported by an extensive line of mounts, sockets, TEC controllers, and current controllers.
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Saluki SE3001 Optical Chopper (1Hz - 10kHz)
SE3001 Optical Chopper is high-precision optical equipment with its chopper frequencies from 1 Hz to 10 kHz. With the advantage of PID technology and high-quality motor, the frequency accuracy of SE3001 is up to 0.5%. SE3001 consists of a console, a chopper head and a control line. The main function of the console is to control the speed of the motor to achieve the target speed. The chopper head is mainly composed of a base and a motor with a blade.
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Cameras and Lights
MacArtney LUXUS cameras and lights are designed to combine operational and service flexibility, excellent performance and reliability.
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Chamber Light
LED-CL
The Teledyne Bowtech LED-CL Chamber Light is extremely safe and reliable, due to its advanced technology and innovation.The light has 100,000 hour life and has been designed specifically for use within the Hyperbaric Diving environment, whether that is in Hyperbaric Chambers, TUP's, Diving Bells or even Wet Bells.
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Light Analysis
Welcome to Thorlabs; below you will find links to detectors and instrumentation that measure the various properties of light, a subset of our entire line of photonics products. Thorlabs offers an extensive selection of instruments that measure the properties of light. Our versatile power and energy meters can be used with over 25 different sensors in order to make NIST-traceable power and energy measurements. If the convenience of a meter is not desired, our selection of detectors includes basic photodiodes (uncalibrated and calibrated), photodetectors (biased, amplified, and avalanche), CCD and CMOS arrays, position detectors, integrating spheres, and photomultiplier tubes. The Beam Characterization category contains beam profilers (camera and scanning slit), a wavefront sensor, spectrometers, and interferometers, while the Polarimetery link leads to a selection of instruments used to measure and control the polarization of light.
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Light Booths
Konica Minolta Sensing Americas, Inc
Konica Minolta’s Light Booth products provide accurate results when inspecting a range of unique products including inks, paints, plastics, textiles, paper and colorants. Light booths simulate lighting conditions which allows testing in a multitude of different lighting conditions. This allows for incredibly precise color measurements in a spectrum of different lights and angles.
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Light Curtains
Leuze electronic GmbH + Co. KG
Switching light curtains are perfect for monitoring large measurement fields. They react as soon as anything or anyone penetrates this field. Their fast configuration and simple handling save time and money compared to imaging processes. Thanks to different beam spacings and measurement field lengths, switching light curtains can be used to solve a range of application problems.
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Light Engines
Delivering the highest brightness and optical power available, our light engines provide optimized output solutions for a range of applications such as light guide and fiber optic coupling, fluorescence excitation, and unrivaled uniform near and far field illumination.
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Light Measurement
Light is produced from many natural and artificial sources. Controlling light and having an accurate understanding of its output, directionality and the appearance of what it irradiates is key to product development, quality and the success of a light source. Here are just a few examples of why Labsphere is leading the industry in light measurement.
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Light Measurement
Redesigned light sensors optimized for ecological, meteorological, solar energy, plant research, and underwater measurements.
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Light Meter
Shenzhen UYIGAO Electronic Technology Co., Ltd
Digital Luxmeter Lux light meter for photography Photometer Mini spectrometer spectrophotometer Luminometer
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Light Meter
PLMT56
Light Meter Measures In LuxOver-Range IndicatorLong-Life Silicon Photo Diode InsideMeasurement Rate: 1.5 Times per SecondMax Range: 50,000 LuxAccuracy: +/- 5% Under 10000 Lux, +/- 10% Over 10000 LuxMax Resolution: 0.1 LuxDimensions: 7.40' H x 2.52' W x 0.96' DAccessories Included: 12V A23 Battery, Photo DetectorSold as : Unit
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Light Meter
PLMT68
Light Meter Measures In Lux and Foot Candles (User Selectable)Over-Range IndicatorAuto RangingPeak Hold, Max and Data HoldRelative ModeLong-Life Silicon Photo Diode InsideMeasurement Rate: 1.5 Times per SecondMax Range: 400,000 LuxAccuracy: +/- 5% Under 10000 Lux, +/- 10% Over 10000 LuxMax Resolution: 0.1 Lux/FCAccessories Included: 9V Battery, Carrying Case, Photo DetectorDimensions: 6.50' H x 2.99' W x 1.69' DWeight: 14.22 oz.Sold as : Unit
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Light Meter
DL1076
Switchable between LUX and FC (footcandles)Auto-rangingAuto-zero at turn-onDisplay hold functionAnalog output (2 VDC F.S.)
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Light Meter
MODEL 5202
Kyoritsu Electrical Instruments Works, Ltd.
Digital Light Meter 3 ranges changeable from low to high illuminance. (200/2000/20000lux) Data hold function. Digital light meter with separate light recieving sensor and meter.
