Instrumen ukur fokus lensa elktronik

Harjono , Teguh (1997) Instrumen ukur fokus lensa elktronik. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Instrumen ukur fokus lensa elektronik adalah alat ukur fokus lensa yang piranti utamanya terdiri dari sumber cahaya, lensa standar, sensor cahaya dan motor sebagai penggerak sumber cahaya yang dikontrol melalui program komputer. Untuk mengolah sinyal dipakai rangkaian elektronik sedangkan media tampilannya adalah monitor komputer. Instrumen ukur fokus lensa ini hanya mampu mengukur jarak fokus lensa positif yang mempunyai jarak fokus lebih panjang dari jarak fokus lensa standarnya, bersifat sensitif terhadap pergeseran posisi, kemiringan dan letak ketinggian sumber cahaya. Hasil percobaan adalah : (1) Dengan lensa standar berjarak fokus 50 mm diperoleh hasil : Untuk lensa uji 60 mm ft = (58,05 ± 0,57) mm Untuk lensa uji 100 mm ft = (98,05 t 0,68) mm Untuk lensa uji 150 mm ft = (148,38 ± 0,72) mm Untuk lensa uji 200 mm ft = (203,20 ± 0,79) mm (2) Dengan lensa standar berjarak fokus 60 mm diperoleh hasil : Untuk lensa uji 100 mm ft = (98,37 ± 0,97i mm Untuk lensa uji 150 mm ft = (148,63 ± 0,52) mm Untuk lensa uji 200 mm ft = (203,73 + 0,89) mm The electronic instrument lens focus gauge is an instrument to measure lens focus, coasist of light source, standard lens, light censor and light source mover and it's controlled by computer programming. . Electronic circuit is used to process the signal and computer monitor is used for visual media. The measuring ability of this instrument is just to measure lens focus distance longer than standard lens focus, sensitive with position shift, declinity and elevated light source place. The results of this experiment are : (1) For 50 mm standard lens focus : For test lens 60 mm ft = (58,05 + 0,57) mm For test lens 100 mm ft = (98,05 + 0,68) mm For test lens 150 mm ft = (148,38 + 0,72). mm For test lens 200 mm ft = (203,20 + 0,79) mm (2) For 60 mm standard lens focus : For test lens 100 mm ft = (98,37 + 0,97) mm For test lens 150 mm ft = ( 148,83 + 0,52) mm For test lens 200 mm ft = ( 203,73 + 0,89) mm iv • This document is Undip Institutional Repository Collection. The author(s) or copyright owner(s) agree that UNDIP-IR may, without changing the 'content, translate th0 • Submission to any medium or format for the purpose of preservation. The author(s) or copyright owner(s) also agree that UNDIP-IR may keep more than one copy of this I•

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QC Physics
Divisions:Faculty of Science and Mathematics > Department of Physics
ID Code:30392
Deposited By:Mr UPT Perpus 1
Deposited On:28 Oct 2011 09:20
Last Modified:28 Oct 2011 09:20

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