Light Sensors

The light sensor is a passive device that converts the light energy into an electrical signal output. Light sensors are more commonly known as Photoelectric Devices or Photo Sensors because they convert light energy (photons) into electronic signal (electrons). Phototransistors, photoresistors, and photodiodes are some of the more common type of light intensity sensors.


Photoelectric sensors use a beam of light to detect the presence or absence of an object. It emits a light beam (visible or infrared) from its light-emitting element. A reflective-type photoelectric sensor is used to detect the light beam reflected from the target. A beam of light is emitted from the light emitting element and is received by the light receiving element. Both the light emitting and light receiving elements are contained in a single housing. The sensor receives the light reflected from the target.


A phototransistor, on the other hand, uses the level of light it detects to determine how much current can pass through the circuit. So, if the sensor is in a dark room, it only lets a small amount of current to flow. If it detects a bright light, it lets a larger amount of current flow. A photoresistor is made of cadmium sulphide whose resistance is maximum when the sensor is in dark. When the photoresistor is exposed to light, its resistance drops in proportion to the intensity of light. When interfaced with a circuit and balanced with potentiometer, the change in light intensity will show up as change in voltage. These sensors are simple, reliable, and cheap, used widely for measuring light intensity.


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ISL76671AROZ-T7A
ISL76671AROZ-T7A - Special Function IC, Ambient Light Sensor, 1.8 V to 3 V, ODFN-6

2544741

RENESAS

Special Function IC, Ambient Light Sensor, 1.8 V to 3 V, ODFN-6

AMBIENT LIGHT SENSOR, AEC-Q100, ODFN-6; Sensor Output:Voltage; Wavelength of Peak Sensitivity:550nm; Supply Voltage Min:1.8V; Supply Voltage Max:3.3V; Ambient Light Sensor Case Style:ODFN; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Tem

387 Op voorraad

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KPS-3227SP1C
KPS-3227SP1C - Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 0.4 Vce(sat)

2373478

KINGBRIGHT

Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 0.4 Vce(sat)

SENSOR, OPTICAL, PHOTOTRANSISTOR, NPN; Sensor Output:Voltage; Wavelength of Peak Sensitivity:580nm; Supply Voltage Min:0.4V; Supply Voltage Max:60V; Ambient Light Sensor Case Style:SMD; No. of Pins:4Pins; Operating Temperature Min:-40°C; Operating Temper

2.999 Op voorraad

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MAXREFDES23DB#
MAXREFDES23DB# - Reference Design Board, Santa Cruz IO-Link Light Sensor

2643465

MAXIM INTEGRATED PRODUCTS

Reference Design Board, Santa Cruz IO-Link Light Sensor

REF DESIGN BOARD, IO LINK LIGHT SENSOR; Silicon Manufacturer:Maxim Integrated Products; Silicon Core Number:-; Application Sub Type:Light Sensor; Core Architecture:-; Core Sub-Architecture:-; Silicon Family Name:-; Kit Contents:Programming Adaptor Board;

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OPT3006YMFR .
OPT3006YMFR . - Ambient Light Sensor, Ultra Thin

2690198RL

TEXAS INSTRUMENTS

Ambient Light Sensor, Ultra Thin

AMBIENT LIGHT SENSOR, 0.01LUX, PICOSTAR6; Sensor Output:SMBus, I2C Digital; Wavelength of Peak Sensitivity:550nm; Supply Voltage Min:1.6V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:PicoStar; No. of Pins:6Pins; Operating Temperature Min:-40

1.960 Op voorraad

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OPT3001DNPR
OPT3001DNPR - IC, Special Function, Ambient Light Sensor, 1.6 V-3.6 V supply, USON-6

2542662

TEXAS INSTRUMENTS

IC, Special Function, Ambient Light Sensor, 1.6 V-3.6 V supply, USON-6

AMBIENT LIGHT SENSOR, UDFN-6; Sensor Output:SMBus, I2C Digital; Wavelength of Peak Sensitivity:550nm; Supply Voltage Min:1.6V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:USON; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Te

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VEML6075
VEML6075 - Light Sensor, UVA and UVB, I2C, 1.7 V to 3.6 V

2523611

VISHAY

Light Sensor, UVA and UVB, I2C, 1.7 V to 3.6 V

LIGHT SENSOR, DIGITAL / I2C; Sensor Output:Digital (I2C); Sensing Range Max:365mm; Supply Voltage DC Min:1.7V; Supply Voltage DC Max:3.6V; Output Current:400µA; Product Range:UV Sensor

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AMS302.
AMS302. - Ambient Light Sensor, High Sensitivity, Through Hole, 1.5 Vdc to 6 Vdc

2448039

PANASONIC

Ambient Light Sensor, High Sensitivity, Through Hole, 1.5 Vdc to 6 Vdc

LIGHT SENSOR, 6V, 580NM, THD; Sensor Output:Current; Wavelength of Peak Sensitivity:580nm; Supply Voltage Min:1.5V; Supply Voltage Max:6V; Ambient Light Sensor Case Style:Through Hole; No. of Pins:2Pins; Operating Temperature Min:-30°C; Operating Tempera

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APDS-9301-020
APDS-9301-020 - Ambient Light Sensor, APDS-9301, Miniature, Digital, chipLED SMD, 2.7 Vdc to 3.6 Vdc

2497389

BROADCOM

Ambient Light Sensor, APDS-9301, Miniature, Digital, chipLED SMD, 2.7 Vdc to 3.6 Vdc

AMBIENT LIGHT PHOTO SENSOR, DIGITAL; Sensor Output:I2C Digital; Wavelength of Peak Sensitivity:-; Supply Voltage Min:2.7V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:ChipLED; No. of Pins:6Pins; Operating Temperature Min:-30°C; Operating Tem

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MAX44000GDT+T
MAX44000GDT+T - IC, Special Function, Ambient Light Sensor, 1.7 V-3.6 V supply, OTDFN-6

2514191RL

MAXIM INTEGRATED PRODUCTS

IC, Special Function, Ambient Light Sensor, 1.7 V-3.6 V supply, OTDFN-6

AMBIENT/INFRARED PROXIMITY SENSOR, OTDFN; Supply Voltage Min:1.76V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:OTDFN; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Temperature Max:105°C; Product Range:MAX44000 Series; SVHC:N

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SI1153-AA00-GM
SI1153-AA00-GM - Integrated Ambient Light Sensor, 1.6V to 3.6V Supply, DFN-10

2769154

SILICON LABS

Integrated Ambient Light Sensor, 1.6V to 3.6V Supply, DFN-10

AMBIENT LIGHT SENSOR, I2C, DFN-10; Supply Voltage Min:1.6V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:DFN; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:Si1153 Series; SVHC:No SVHC (12-J

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