Focusing errors in a collimating lens or mirror: use of a moiré technique
JC Fouéré, D Malacara - Applied Optics, 1974 - opg.optica.org
JC Fouéré, D Malacara
Applied Optics, 1974•opg.optica.orgThe Fresnel diffraction pattern of a grating periodically gives an exact reproduction of the
grating. By superposing a second grating on such an image, we form a Moiré pattern that
depends upon the degree of parallelism of the incident beam. We present here the
possibility of using this technique for studying the focusing errors in a collimating lens or a
mirror.
grating. By superposing a second grating on such an image, we form a Moiré pattern that
depends upon the degree of parallelism of the incident beam. We present here the
possibility of using this technique for studying the focusing errors in a collimating lens or a
mirror.
The Fresnel diffraction pattern of a grating periodically gives an exact reproduction of the grating. By superposing a second grating on such an image, we form a Moiré pattern that depends upon the degree of parallelism of the incident beam. We present here the possibility of using this technique for studying the focusing errors in a collimating lens or a mirror.
opg.optica.org
以上显示的是最相近的搜索结果。 查看全部搜索结果