In this paper investigations have been carried out on the imaging of extended objects by an off-axis holographic lens operating at a wavelength different from its recording. Aberration balancing and correction techniques have been applied to improve the quality of imaging coherent as well as incoherent bar and edge objects. The light intensity distribution in the Gaussian image plane has been computed numerically and the results have been presented in graphical form. The image quality of the aberration-balanced holo-lens has been found to be comparable to that of the ideal holo-lens.

In this paper investigations on the imaging of extended objects by an off-axis holographic lens reconstructed at a wavelength different from its recording have been carried out. An aberration correction technique has been applied to minimise the aberrations introduced by the wavelength shift. The performance of a corrected holo-lens has been evaluated by computing the images of coherent as well as incoherent bar and edge objects and compared with that of the aberrated holo-lens. Light intensity distribution in the image plane has been evaluated numerically and the results have been presented in graphical form.

Investigations on the imaging of extended objects by a holographic lens in the presence of third-order spherical aberration and astigmatism have been carried out in this paper. Light intensity distribution in the aberration spot observed at the Gaussian plane has been evaluated numerically, using a ray-tracing procedure, for different amounts of astigmatism and for a fixed value of spherical aberration. The images of extended coherent and incoherent edge as well as bar objects have been computed and the results have been compared with that for the aberration-free case. All the results are illustrated in graphical form.

This paper evaluates the performance of an off-axis curved holographic lens using a numerical ray-tracing procedure. The hologram curvature has been suitably selected to eliminate spherical aberration. Light intensity distribution in the aberration spot observed at the Gaussian image plane has been evaluated for different object fields. The images of extended coherent and incoherent edge as well as bar objects have been computed and the results compared with that for the aberration-free case. All the results are illustrated in graphical form.

The aim of this paper is to evaluate the performance of an off-axis holographic lens afflicted with third-order spherical aberration and coma using a numerical ray-tracing procedure. The light intensity distribution in the aberration spot observed at the Gaussian image plane has been evaluated for different amounts of coma and for a fixed value of spherical aberration. The images of both an extended coherent and an incoherent edge as well as bar objects have been computed and the results compared with the aberration-free case. All the results are illustrated in graphical form.

Imaging of extended objects using an off-axis holographic lens; Effect of third-order coma. The aim of this paper is to evaluate the performance of an off-axis holographic lens afflicted with third-order coma using a numerical ray-tracing procedure. Light intensity distribution in the aberration spot observed at the Gaussian image plane has been evaluated for different amounts of coma. The coherent and incoherent images of extended objects such as edge and bar have been computed and the results have been compared with that for the aberration-free case

In this paper, investigations on the imaging of extended objects by a holographic lens in the presence of a wavelength shift have been carried out with the help of a numerical ray-tracing procedure. An aberration correction procedure has been used to improve the imaging characteristics. Light-intensity distribution in the aberration spot observed at the aberrated, aberration-correction and best-focus image planes has been evaluated. The coherent and incoherent images of extended objects such as edges and bars have been computed and the results have been compared with that for the aberration-free case. The incoherent modulation transfer function has also been evaluated. All the results are illustrated in graphical form.

In this paper investigations on the imaging of extended objects by a holographic lens in the presence of third-order spherical aberration have been carried out with the help of a numerical ray-tracing procedure. Light intensity distribution in the aberration spot observed at the Gaussian and best focus image planes has been evaluated. The coherent and incoherent images of extended objects such as edge and bar have been computed and the results have been compared with that for the aberration- free case. All the results are illustrated in graphical form.

In this paper investigations on the imaging of extended objects by a holographic lens in the presence of third-order spherical aberration have been carried out with the help of a numerical ray-tracing procedure. Light intensity distribution in the aberration spot observed at the Gaussian and best focus image planes has been evaluated. The coherent and incoherent images of extended objects such as edge and bar have been computed and the results have been compared with that for the aberration-free case. All the results are illustrated in graphical form