Light Choppers
Intercept current or beams of radiation on a periodic basis.
See Also: Light Sources, Optical Heads
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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
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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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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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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Light Meters
An instrument for measuring the intensity of light, used chiefly to show the correct exposure when taking a photograph.
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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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Timing Lights
A stroboscope used to dynamically set the ignition timing of an Otto cycle or similar internal combustion engine equipped with a distributor. Modern electronically controlled passenger vehicle engines require use of a scan tool to display ignition timing.
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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
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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Cameras and Lights
MacArtney LUXUS cameras and lights are designed to combine operational and service flexibility, excellent performance and reliability.
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Light Sources
The unique dual-output of equivalent beams make it a useful source for many comparative applications in addition to wavelength calibration and so on. The two output beams originate from two views of the single emitting spot where the electron beam from the single hairpin filament collides with the interchangeable anode.
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Light Obscuration
FlowCam LO
Yokogawa Fluid Imaging Technologies, Inc.
Our new FlowCam LO instrument combines our patented flow imaging microscopy technology with an embedded light obscuration particle counter to provide you with the necessary data for USP regulations and validation with images.
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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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Light Compensation Capacitor
CBB80
Designed for lighting applications such as fluorescent lamps,high-pressure mercury vapor lamps,sodium lamps,and metal halide lamps. The capacitors are used for power factor compensation of transformers and magnetic ballasts in lamps with a frequency of 50Hz or 60Hz,which makes the power factor to achieve cosφ 0.9. The temperature
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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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Ambient Light Sensors
Renesas' ambient light sensors optimize display backlighting, enhance energy efficiency, and improve user experience with ultra-low light sensitivity, low power consumption, and precise spectral response. Our offerings include light-to-digital sensors with IR blocking filters and I2C interfaces, and light-to-analog solutions integrating photodiodes and amplifiers. Designed for automotive, industrial, and medical applications, these sensors deliver reliable performance even in demanding environments.
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Light Source
LS-BA
Balance Light Source (LS-BA) is designed for transmittance and absorbance measurement with color information. Halogen Light source provides the stable and smooth wide-band spectral output. It’s proper for most visible to near infrared range measurement. The efficiency of blue region will be enhanced by extra two blue LEDs.
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Portable Light Sources
FOD 2112
The FOD 2112 provides two wavelengths: 1310&1550 nm. Available adapter types: FC, SC, ST, Universal 2.5mm. All adapters are changeable. Available hybrid adapter types: FC to LC, FC to Universal 2.5mm
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Lighting Reliability
LED/OLED package lifetime is highly dependent on thermal management, and LED lamp performance can be dependent on the luminaire in which it is installed. Lighting reliability test system for LED/OLED Products are widely used for normal /accelerated aging, lumen maintenance measuring, lifetime evaluation and temperature characteristic testing for LED/OLED products including LED package, array, module, OLED module and luminaires.
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Light Meters
A light meter is a very sensitive electronic measuring device used to help monitor the illumination of any given area. Most light meter devices are small in size, simple to operate and equipped with an easy-to-read lighted screen made of special glass. Typically, a heavy-duty housing protects the light sensor inside the light meter from damage. A light meter is used for measuring brightness in lux (lx), foot candle (fc) or candela per square meter (cd/m²)measuring units. Some light meter devices are equipped with an internal memory or data logger to record and save measurements. The measurement of light intensity with a light meter is becoming increasingly important in the workplace due to safety concerns. Light measurement is also necessary to determine the best location and angle when installing and adjusting solar panels.
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UV Light Meters
* Long wave 365 nm ultra-violetirradiance measurement.* Professional, high quality UVA meter.* Wide measurement range,199.9 uW/cm^2, 1.999 mW/cm^2 and19.99 mW/cm^2.* Microprocessor circuit assuresmaximum possible accuracy,provided special functions andfeatures.* Exclusive UVA sensor withcorrection filter.
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Light Meters
LXP-2
The digital light meter is a precision instrument used to measure illuminance (Lux, footcandle) in the field. It is meet CIE photopic spectral response. It is fully cosine corrected for the angular incidence of light. The illuminance meter is compact, tough and easy to handle owing to its construction. The light sensitive component used in the meter is a very stable, long-life silicon photo diode and spectral response filter.
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Cockpit Lighting
Astronics works side by side with you to deliver customized lighted cockpit control panel assemblies and illuminated panels for your commercial, military, and business aviation programs.
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Light Sources
These external units provide illumination which is transmitted to the viewing instrument by a light guide cable, and then through the scope via the integral fiber bundle to the viewing tip.
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LilyPad Light Sensor
The LilyPad Light Sensor is a sewable breakout board with an ALS-PT19 light sensor built in and ready to use right away. Each sensor outputs voltage between 0V and 3.3V depending on the level of ambient light shining on it. As more light is applied on the sensor, more current will flow from the board through the signal tab to the microcontroller you connect the sensor to. If the sensor receives no light, no current will flow through it. In a typical indoor lighting situation, the sensor will output around 1 to 2V. Adding this board into your next e-textile or wearable project will really open up the possibilities by being able to incorporate light level sensing capabilities.
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Light Flicker Meter
LiFli
The LiFli light flicker meter enables fast evaluation of light sources on the flickering part (flicker / flicker). Especially in the case of LED lamps, the flicker portion can be determined only by one measurement, since it is in the range of 0% to 100% for these luminous means.Audio features enable the flicker to be reproduced acoustically. A voltage output for further analysis by means of oscilloscope or voltage analyzer is available.
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Light Sheet Microscopes
Life science research can place high demands on your imaging capabilities: Sometimes you need to image whole living model organisms, tissues and cells as they develop. Or you may want to observe subcellular dynamics in living samples over hours and even days. Light sheet fluorescence microscopy (LSFM) with its unique illumination principle is ideal for fast and gentle imaging of such specimens.
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Standard Light Source
SLS-50W
OSRAM Standard Lamp to calibrate the spectrum and luminous flux with Lisun Lab certification. The data can be traced NIM. The Standard Lamp Source is used to calibrate the integrating sphere system. The different size of Integrating Sphere should choose the right power of standard lamp source.
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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.





























