Qhov Optical Density (OD) Tus nqi yog dab tsi?

Optical ntom ntom (OD)nyob rau hauv laser kev ruaj ntseg yog tus npaum li cas ntawm lub teeb uas yog ntsuas ntawm ib tug tshwj xeeb wavelength ntawm lub lens attenuation [i]. ANSI Z136.1 Middle American Ntiaj Teb Laser Kev Nyab Xeeb txiav txim siab OD xav tau nyob ntawm ntau yam, suav nrog lub wavelength ntawm lub laser. Cov qauv no tau tsim los ntawm kev tshawb fawb raws li qhov sib txawv wavelengths tsim cov teebmeem lom neeg sib txawv. Ntawm no yog ib qho piv txwv ntawm yuav ua li cas thiaj nyeem cov cim lus luv rau kev siv kho qhov muag thiab lub zog ua rau lub zog los ntawm cov lim lim.

Nco ntsoov tias txhua qhov wavelength muaj qhov sib txawv ntawm qhov muag pom. Rau kev yooj yim, nws yog qhia raws li qhov ntau ntawm wavelengths. Lub wavelength yog thawj qhov yuav tsum tau pib ntsuas hom kev tiv thaiv kev nyab xeeb laser yuav tsum tau.

Kev Tiv Thaiv Laser thiab Qhov Tseem Ceeb ntawm OD Qhov Tseem Ceeb

Kev tiv thaiv laser yog ib qho tseem ceeb ntawm kev nyab xeeb thaum ua haujlwm nrog lasers. Nws suav nrog kev ntsuas los tiv thaiv lub qhov muag thiab tawv nqaij los ntawm kev phom sij ntawm laser hluav taws xob. Ib txoj hauv kev los ntsuas qhov ntsuas kev tiv thaiv laser zoo npaum li cas yog siv qhov Optical Density (OD) tus nqi. Hauv tsab xov xwm no, peb yuav tshawb txog OD tus nqi thiab nws qhov tseem ceeb hauv kev tiv thaiv laser.

Txawv OD Qhov Tseem Ceeb rau Txawv Laser Wavelengths

Qhov sib txawv laser wavelengths xav tau cov txiaj ntsig OD sib txawv los tiv thaiv lub qhov muag thiab tawv nqaij zoo. Nov yog cov lus pom zoo OD qhov tseem ceeb rau txhua qhov wavelength raws li American National Standards Institute (ANSI) Z136.1-2014:

- Rau pom thiab ze-infrared lasers (400-1400 nm), qhov pom zoo OD qhov tseem ceeb sib txawv ntawm 2 mus rau 5 nyob ntawm lub laser lub zog ceev thiab lub sij hawm raug.

- Rau ultraviolet lasers (180-400} nm), qhov pom zoo OD qhov tseem ceeb ntawm 3 txog 10, nyob ntawm seb lub zog ceev thiab lub sij hawm raug.

- Rau nruab nrab-infrared thiab far-infrared lasers (1400-11,000} nm), qhov pom zoo OD qhov tseem ceeb sib txawv ntawm 5 mus rau 8 rau cov lasers txuas ntxiv mus thiab siab dua rau cov lasers pulsed.

Kev siv ntawm OD Values

Cov txiaj ntsig OD sib txawv sib txawv rau cov ntawv thov sib txawv ntawm kev tiv thaiv laser. Nov yog qee qhov piv txwv:

- OD 2-3: Haum rau cov lasers uas tsis muaj zog, xws li laser pointers thiab barcode scanners.

- OD 4-5: Haum rau nruab nrab-powered lasers, xws li kev kho mob thiab kev lag luam lasers.

- OD 6-7: Haum rau cov lasers muaj zog, xws li cov tub rog thiab tshawb fawb lasers.

- OD 8-10: Haum rau cov lasers uas muaj zog heev, xws li siv hauv kev tshawb fawb thiab kev siv dav hlau.

Xaus

Hauv cov ntsiab lus, OD tus nqi yog qhov tseem ceeb rau kev ua kom muaj kev tiv thaiv laser zoo. Qhov pom zoo OD tus nqi nyob ntawm lub laser wavelength, lub zog ceev, thiab lub sij hawm raug. Nws yog ib qho tseem ceeb uas yuav tsum xaiv qhov tseeb OD tus nqi rau kev ntsuas kev nyab xeeb ntawm laser los tiv thaiv kev puas tsuaj ntawm hluav taws xob laser.