Re thabela ho hlahisa sehlahisoa sa rona sa morao-rao - likhalase tsa optical tsa boleng bo holimo. Likhalase tsena tse peli li na le foreimi e entsoeng ka thepa ea boleng bo phahameng ba acetate, e nang le moralo oa khale le ponahalo e bonolo le e fetohang. Likhalase tsa rona li na le li-hinges tsa selemo tse tenyetsehang, tse etsang hore li phutholohe ho li roala. Ntle le moo, re boetse re ts'ehetsa tlhophiso ea li-LOGO tse nang le bokhoni bo boholo le mokhoa oa ho etsa liphutheloana tsa kantle tsa likhalase ho fihlela litlhoko tsa bareki.

Likhalase tsa rona tsa optical ha li na ponahalo ea setaele feela empa hape li shebane le boleng le boiketlo. Foreimi e entsoeng ka thepa ea boleng bo phahameng ba acetate e tiisa ho tšoarella le botsitso ba likhalase. Mokhoa oa khale oa moralo o etsa hore likhalase tsena li be le mefuta e mengata haholo, ebang ke liaparo tsa letsatsi le letsatsi kapa liketsahalo tsa khoebo, li ka bontša botho ba hau le tatso ea hau.

Moralo oa hinge ea selemo o etsa hore likhalase li lekane sefahleho sa sefahleho haholoanyane 'me ho se be bonolo ho thella. E boetse e fokotsa khatello ha u apara, e u lumella ho e apara hamonate ka nako e telele. Re ela hloko lintlha mme re ikitlaelletsa ho fa bareki boiphihlelo bo botle ba tšebeliso.

Ntle le boleng ba sehlahisoa ka bosona, re boetse re fana ka lits'ebeletso tsa ho etsa liphutheloana tse nang le bokhoni bo boholo le likhalase tsa kantle. Bareki ba ka hatisa LOGO ea motho ka mong likhalaseng ho latela litlhoko tsa bona, kapa ba iketsetse liphutheloana tse ikhethileng tsa likhalase tsa kantle ho etsa hore lihlahisoa li ikhethile le ho ikhetha.

Likhalase tsa rona tsa optical hase feela lisebelisoa tsa feshene, empa hape ke pontšo ea bophelo ba boleng. Re ikemiselitse ho fa bareki lihlahisoa tsa boleng bo holimo, tse phutholohileng tsa mahlo ha ba ntse ba fihlela litlhoko tsa bona. Re lumela hore ho khetha lihlahisoa tsa rona ho tla eketsa boleng le boiketlo bophelong ba hau.

Hore na u mosebelisi ka bomong kapa u morekisi, re u amohela ho ikopanya le rona ho ithuta haholoanyane ka likhalase tsa rona tsa mahlo. Re labalabela ho sebetsa le uena ho theha bokamoso bo molemo hammoho.