Luminous Flux vs. Lumens: Know its Difference!
Richa Parmar born & brought up in Navsari, a town in Gujarat picked up a degree as an Architect from The Maharaja Sayajirao University of Baroda after pursuing Diploma in Architecture Assistantship from Surat. Passionate in the field of designing & creativity, she tries to do a lot of research in her field & implements the same in her work. She has been creating excellent imaginative designs that fit in the budget & also fulfils the needs of clients. Her inclination towards nature has made her take up a lot of challenging assignments in the subject of “landscape” and also has made her initiate to write blogs. Presently she works as an Senior Manager cum Architect Blogger for “Gharpedia” portal. Her blogs keep long term impact on the readers’ mind which shows her commitment to producing excellent results by attracting traffic to her writings. Regardless of her tasks, she also briefs her team for streamlining the process more effectively within proper strategies. Looking at her softer part in life, she loves painting, reading & travelling. She is a hardcore fan of dogs and also has one at her home. You can reach her at LinkedIn, Facebook, Twitter, Instagram, Pinterest, Quora & Medium.
Basically the lumens is the unit radiated from luminous flux! They are measure of total amount of visible light to the human eye from a light source or lamp.
Luminous Flux (ø)
|Luminous flux is the quantity of the energy of the light emitted per second in all directions. The unit of luminous flux is lumen (lm).
In other words, it is the quantity characteristic of radiant flux which expresses its capacity to produce visual sensation evaluated according to the values of relative luminous efficiency for the light adapted eye:
a) Effective luminous flux (øn) — Total luminous flux which reaches the working plane.
b) Nominal luminous flux (ø0) — Total luminous flux of the light sources in the interior.
|Lumens are denoted by lm are a measure of the total amount of visible light to the human eye from a light source or lamp. The higher the lumen rating the “brighter” the lamp will appear or we can say the more lumens in a light bulb, the light is brighter.
In other words, it is SI unit of luminous flux. The luminous flux emitted within unit solid angle (one steradian) by a point source having a uniform intensity of one candela.
Lumens used in house depends on a number of factors including; room size and shape, ceiling height, colour scheme or interior, type of lamps & fitting , task areas and needs of the user. As a general guide; below are the lumens required for different room settings per 10 sq ft. In many cases a mixture of general and task lighting will be required.
|Living room||400 – 500|
|Kitchen||300 – 400|
|Kitchen (Task)||700 – 800|
|Bedroom||300 – 400|
|Bedroom (Task)||700 – 800|
|Bathroom||500 – 600|
|Bathroom (Task)||700 – 800|