Rea u amohela kenyelletsong ea rona ea lihlahisoa tse phahameng tsa likhalase tsa optical! Likhalase tsa rona tsa boleng bo holimo li tumme ka moralo oa tsona oa setaele le thepa ea boleng bo holimo. Pele ho tsohle, likhalase tsa rona li nka moralo o motenya oa foreimi, o totobatsang boemo ba feshene mme o o lumella ho fana ka kholiseho le botle ka nako efe kapa efe. Moqapi ona ha o lumellane feela le mokhoa oa feshene empa o boetse o bontša botho ba hau le tatso ea hau.

Likhalase tsa rona tse phahameng tsa optical li entsoe ka thepa ea acetate, e leng se etsang hore likhalase li be bonolo haholoanyane. Boitsebiso bona ha bo bobebe ebile bo phutholohile empa bo boetse bo na le nako e ntle ea nako e telele, e leng se u lumellang ho se apara nako e telele ntle le bothata. Ebang ke mosebetsing kapa boikhathollong, likhalase tsa rona li ka u tlisetsa phihlelo ea ho apara hantle.

Ho phaella moo, re fana ka mefuta e fapaneng ea mebala ea foreimi ea feshene eo u ka khethang ho eona, ebang u rata botšo bo bofubelu bo tlaase kapa bo bofubelu bo botle, re ka finyella litlhoko tsa hau tsa botho. Re lumela hore likhalase hase feela sesebelisoa sa ho lokisa pono empa hape ke lisebelisoa tsa feshene, kahoo re ikemiselitse ho u fa mefuta e sa tšoaneng ea khetho e le hore likhalase tsa hau li ka fetoha mokhoa oa ho qetela oa ponahalo ea hau.

Ntle le moo, re boetse re ts'ehetsa tlhophiso e kholo ea LOGO le ho itlhophisa ka likhalase tsa kantle tsa liphutheloana, ho etsa hore likhalase tsa hau e be tsa botho le tse ikhethang. Hore na e le mohiruoa oa khoebo o rua molemo kapa e le mpho, re ka u etsetsa likhalase tse ikhethang ho bonts'a setšoantšo sa mofuta oa hau hantle.

Ka bokhutšoanyane, likhalase tsa rona tsa boleng bo holimo ha li na ponahalo ea feshene feela le lisebelisoa tsa boleng bo phahameng empa hape li finyella litlhoko tsa hau tsa botho. Ho sa tsotellehe hore na u phehella mekhoa ea feshene kapa u tsepamisitse maikutlo ho boiketlo le ho sebetsa, re ka u fa lihlahisoa le litšebeletso tse khotsofatsang ka ho fetisisa. Ho khetha likhalase tsa rona tse phahameng tsa optical ho tla etsa hore likhalase tsa hau e se ke ea e-ba ntho e tloaelehileng feela, empa e le pontšo ea botho ba hau le letšoao la feshene.