We present a novel method to diffractive null lens designs to test parabolic mirrors. The phase coefficients control the
diffracted ray which hits normally the aspheric surfaces. The spherical and coma aberrations are corrected. The
equations are exact and optimization process is not required.
We propose a novel method to correct the spherical and coma aberration using a hybrid element (refractive-diffractive).
The refractive surface is used to correct the coma, we obtain this condition curving the second principal plane and
centred it on the axial point image. The diffractive element is used to correct the spherical aberration using an exact ray
trace and the diffractive coefficients as variables. The optimization routine is no required. This method can be used for
any conjugates position.
We present a method to compensate the spherical aberration for any optical system and any object position, with this method the spherical aberration could be zero in several pupil positions at the same time. The aspheric coefficients are used to compensate the spherical aberration and they are calculated solving a system of first grade equations.
In this work, we propose an alternative method for design diffractive lenses controlling the spherical aberration for monochromatic imaging. These diffractive lenses are designed on a rotationally symmetrical surface. Our method calculates the surface profiles for any substrate, for any f-number and any object position. The calculations are exact and an optimization process is not required.
In this work we propose the optical design of Galilean telescopes for low vision people using hybrid optical components. By use of these new optical components we have obtained compact and lightweight optical systems without detriment of the optical quality of the images. We present the optical design of telescopes for three different magnifications, as well as the evaluation of the image quality using the eye model proposed by Bruce H. Walker.
People with visual weakness, besides the typical refraction problems as myopia (shortsightedness), lose much of the light that enters to their eyes because their retina has many useless cones. For this reason the traditional ophthalmic lenses cannot solve the problem of these people, therefore, we are required of optical systems that collect a big quantity of light, we also need these systems to be of small dimensions and lightweight so they can be used for a long time. In this work we propose the optical design of telescopes using hybrid components, using this new optical components we have obtained compact and lightweight optical systems without decreasing the optical quality of the images. We present the optical design of telescopes for three different magnifications, as well as the analysis of the quality of their images.