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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  Manufacturer Part No Newark Part No. Manufacturer / Description
Availability Price for:
Price
Quantity
KPS-3227SP1C
KPS-3227SP1C - Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 4 Veco

27X9137

Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 4 Veco

KINGBRIGHT

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

1,581 in stock

+ Check Stock & Lead Times

5-7 business days shipping for in stock items

More stock available week commencing 14/12/20

Delivery in 10-15 business days from our UK warehouse for in stock items

Restricted Item
ISL76671AROZ-T7A
ISL76671AROZ-T7A - AMBIENT LIGHT SENSOR, AEC-Q100, ODFN-6

82Y6722

AMBIENT LIGHT SENSOR, AEC-Q100, ODFN-6

RENESAS

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 RoHS Compliant: Yes

387 in stock

+ Check Stock & Lead Times

5-7 business days shipping for in stock items

More stock available week commencing 26/10/20

Delivery in 10-15 business days from our UK warehouse for in stock items

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MAXREFDES23DB#
MAXREFDES23DB# - REF DESIGN BOARD, IO LINK LIGHT SENSOR

01AC2004

REF DESIGN BOARD, IO LINK LIGHT SENSOR

MAXIM INTEGRATED PRODUCTS

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 RoHS Compliant: Yes

Available for back order

+ Check Stock & Lead Times

5-7 business days shipping for in stock items

More stock available week commencing 19/10/20
Delivery in 10-15 business days from our UK warehouse for in stock items

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

11N1073

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

PANASONIC

LIGHT SENSOR; 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 RoHS Compliant: Yes

No Longer Available

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

67R4540

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

BROADCOM

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; Output Current:20mA RoHS Compliant: Yes

No Longer Available

Restricted Item