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What is a Phototransistor?

Optical Components

Editorial Team - GoPhotonics

Feb 16, 2023

A Phototransistor is a kind of transistor that is sensitive to light. It comprises of a photodiode & a transistor which is used to detect light and convert it into an electrical signal. The photot...read more

What is a Light Dependent Resistor (LDR)?

Optical Components

Editorial Team - GoPhotonics

Jun 6, 2023

A Light-Dependent Resistor (LDR), (also known as a photoresistor, photocell, light-dependent resistor, or photo-conductive cell), is a light-sensitive resistor or a light-sensitive sensor used in elec...read more

What are Uniaxial Crystals?

Optical Components Optics

Editorial Team - GoPhotonics

May 11, 2023

Uniaxial crystals are anisotropic materials that possess a unique optical axis along which light behaves differently in different directions within the crystal. An anisotropic material means that its ...read more

What is Holography?

Optical Components

Editorial Team - GoPhotonics

Dec 5, 2022

Holography is a technique used to generate a 3D image of an object. These 3D images are called holograms. This technique was invented by Dennis Gabor in 1947. A hologram is created using three differe...read more

What is Response Time of a Photodiode?

Optical Components

Editorial Team - GoPhotonics

Oct 3, 2023

The response time of a photodiode refers to the time it takes for the photodiode to generate a detectable electrical response to a change in incident light intensity. It quantifies the time taken by a...read more

What are the Sign Conventions for Lenses?

Optical Components

Editorial Team - GoPhotonics

Dec 6, 2022

SIGN CONVENTION FOR LENSESA lens is a curved surface that causes the light rays falling on it to either converge or diverge. The sign convention is a set of rules that determine the signs of the ...read more

What is a Diffraction Grating?

Optical Components

Editorial Team - GoPhotonics

Apr 24, 2023

A diffraction grating is a device that makes use of the diffraction pattern created by multiple evenly spaced slits. It comprises of an opaque screen with several equidistant slits. When light passes ...read more

What are Biaxial Crystals?

Optical Components Optics

Editorial Team - GoPhotonics

May 12, 2023

Biaxial crystals are dual anisotropic materials that possess two distinct optical axes, along which light exhibits different behaviors compared to other directions within the crystal. The dual anisotr...read more

What is an Optical Vortex?

Optical Components

Editorial Team - GoPhotonics

Dec 15, 2023

An optical vortex, or a phase singularity, is a unique point within an optical field where light intensity reaches zero due to the twisting of light waves, resembling a corkscrew pattern. It is one ty...read more

What are the Sign Conventions for Mirrors?

Optical Components

Editorial Team - GoPhotonics

Dec 12, 2022

SIGN CONVENTION FOR MIRRORSA mirror is any surface that reflects the light rays falling on it. The sign convention for a mirror is a set of rules to set the signs of focal length, image distance,...read more

What is a Retroreflector?

Global Optical Components Optics

Editorial Team - GoPhotonics

Aug 7, 2023

A retroreflector is an optical device designed to reflect light back toward its source with minimal scattering. Unlike mirrors, lenses, or prisms that disperse or refract light in various directions, ...read more

What are Aspheric Lenses?

Optical Components

Editorial Team - GoPhotonics

Oct 15, 2022

An aspheric lens is a lens with one or more of its surfaces having a non-spherical surface profile. i.e., its profile deviates from the structure of various simple lenses like the plano-convex lens, b...read more

What is a Dichroic Mirror?

Optical Components Optics

Editorial Team - GoPhotonics

Aug 8, 2023

A dichroic mirror, also known as a dual-band mirror, dual-wavelength mirror, or dichroic reflector, is an optical mirror with different optical characteristics at specific wavelengths. It exhibits ref...read more

What are Microlens Arrays?

Optical Components Optics

Editorial Team - GoPhotonics

Aug 8, 2023

Microlens arrays consist of arrays of small lenses (lenslets) organized in either one or two dimensions. These lenslets typically exhibit a periodic pattern, commonly square or hexagonal, with a lens ...read more

What is Switching frequency of an LED Driver?

LED Drivers Optical Components

Editorial Team - GoPhotonics

Oct 3, 2023

The switching frequency of an LED driver refers to the rate at which the driver switches ON and OFF to regulate the current supplied to the LEDs. It is a crucial parameter in the operation of LED driv...read more

Questions & Answers on Optical Components

Selected Topic :

What is a Phototransistor?

What is a Light Dependent Resistor (LDR)?

What are Uniaxial Crystals?

What is Holography?

What is Response Time of a Photodiode?

What are the Sign Conventions for Lenses?

What is a Diffraction Grating?

What are Biaxial Crystals?

What is an Optical Vortex?

What are the Sign Conventions for Mirrors?

What is a Retroreflector?

What are Aspheric Lenses?

What is a Dichroic Mirror?

What are Microlens Arrays?

What is Switching frequency of an LED Driver?

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