TY - JOUR
T1 - An improved technique of measuring the focal length of a lens
AU - Chon-Wen Chang, Chang
AU - Der-Chin Su, Su
PY - 1989/10/15
Y1 - 1989/10/15
N2 - Based on a Talbot interferometry, an improved technique for measuring the focal length of a lens is proposed. First, the test lens is positioned at the Talbot image of a grating, then a different grating is arranged at the Talbot image of the first grating through the test lens. This arrangement not only expands the measurable range, also improves the precision of the measurement. This technique is suitable for measuring both long and short focal length of a lens which can be concave and convex.
AB - Based on a Talbot interferometry, an improved technique for measuring the focal length of a lens is proposed. First, the test lens is positioned at the Talbot image of a grating, then a different grating is arranged at the Talbot image of the first grating through the test lens. This arrangement not only expands the measurable range, also improves the precision of the measurement. This technique is suitable for measuring both long and short focal length of a lens which can be concave and convex.
UR - http://www.scopus.com/inward/record.url?scp=0024754014&partnerID=8YFLogxK
U2 - 10.1016/0030-4018(89)90213-7
DO - 10.1016/0030-4018(89)90213-7
M3 - 文章
AN - SCOPUS:0024754014
SN - 0030-4018
VL - 73
SP - 257
EP - 262
JO - Optics Communications
JF - Optics Communications
IS - 4
ER -