looj tsom iav dub effect

Cov looj tsom iav dub thaiv qhov tsis xis nyob thaum tiv thaiv koj ob lub qhov muag los ntawm UV rays.Tag nrho cov no yog ua tau ua tsaug rau hlau hmoov lim uas "xaiv" lub teeb thaum nws hits nws.Cov tsom iav xim muaj peev xwm xaiv tau ib co ntawm cov wavelength bands uas ua rau lub hnub rays vim lawv siv cov hmoov hlau zoo heev (hlau, tooj liab, npib tsib xee, thiab lwm yam).Qhov tseeb, thaum lub teeb hits lub lens, nws yog attenuated raws li tus txheej txheem hu ua "kev cuam tshuam kev puas tsuaj."

Ntawd yog, thaum qee qhov wavelengths ntawm lub teeb (hauv qhov no, UV-A, UV-B, thiab qee zaus infrared) dhau los ntawm lub lens, lawv tshem tawm ib leeg tawm sab hauv lub lens, mus rau lub qhov muag.Kev sib tshooj ntawm lub teeb tsis muaj kev sib tsoo: lub ncov ntawm ib nthwv dej thiab cov troughs ntawm cov nthwv dej uas nyob ib sab tso tseg ib leeg tawm.

Qhov tshwm sim ntawm kev cuam tshuam kev puas tsuaj nyob ntawm qhov ntsuas qhov ntsuas ntawm lub lens (uas yog, qhov degree uas lub teeb rays deflect thaum dhau los ntawm cov khoom sib txawv hauv huab cua), thiab tseem nyob ntawm qhov tuab ntawm lub lens.Feem ntau hais lus, lub thickness ntawm lub lens tsis hloov ntau, thaum lub lens refractive index txawv raws li qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg, thiab looj tsom iav dub yuav tsum tsis txhob raug tshav ntuj ncaj qha.

Tsab ntawv xov xwm no tshwm sim thawj zaug https://www.ynjnsunglasses.com/uv400-uv-protection-sunscreen-sunglasses-mens-convenient-oval-frame-sunshade-glasses-folding-sunglasses-womens-polaroid-2-product/


Post lub sij hawm: Jan-23-2024