What is the wavelength of pure orange?

[zyxwv99]

What is the wavelength of pure orange?

 

[bloompyle]

Well that depends on how you define "pure orange"

Orange is defined as 590 - 620nm. If you took the middle, that'd be 605nm.

I've seen 594, 604, 609, and 612 side by side, and it's very hard to pick which one is "pure" orange. As that is very subjective. Though I'd say 604 looks pretty orange to me.

 

[hwang21]

Same here, having seen 594, 604, 609, and 612, I think 604nm is pretty much pure orange :beer: 594 has a gold yellow color, 612nm has a hint of red, 609 is pretty similar to 612, slightly more orange but still detectable hints of red

Here: https://dl.dropboxusercontent.com/u/67636717/Lasers/IMG_2294.JPG 612nm is in TEM01 in the pic, descending wavelength as you go down :beer:

 

[Flaminpyro]

Yep I voted 605 cuz it's the closest to 604

 

[rhd]

Something that is by definition a range of values, has no singular state of purity at any individual value. Every wavelength in your poll (except 585) is "pure orange" because every value is entirely within the definition of orange, and is not to any degree outside of the definition of orange.

There is no singular answer. If you had asked "what wavelength of orange do you like best?", subjective answers of individual wavelengths would be fine.

 

[Encap]

From Crest Technologies - LEDs - The colour of light and it's wavelength

RED:
700nm - Deep red
660nm - Red
645nm - Bright red
630nm - "He-Ne Laser" red
620nm - Orange-red

ORANGE:
615nm - Reddish orange
610nm - Orange
605nm - Amber

YELLOW:
590nm - "Sodium" yellow
585nm - Yellow
575nm - Lemon yellow / greenish

 

[ultimatekaiser]

indeed, everyone sees color differently. spectrally speaking, it'd be about 607nm.

mathmatically it would be about 605.

bloompyle pretty much summed it up nicely.

 

[mojo_1234]

orange HeNe - 612nm - that's the one for me.

 

[NKO29]

From having only seen "regular" wavelength lasers, i'd say 605nm

 

[Keiichi tsuchiya]

Most people would say that it is 605 but it actually depends on how good can a person identify the colors. Yes most of us can identify it as 605 but are we right ?

 

[hwang21]

See my dropbox photo^^^

 

[flogged]

610nm.

It's unfortunate the recipe used to make red laser diodes cannot be tweaked to freqs higher than ~635nm. No orange LDs DPSS will get one amber.. however expensive, fragile and inefficient.