Design of plastic diffractive-refractive compact zoom lenses for visible-near-IR spectrum.

The requirements for selecting the initial scheme for a compact plastic zoom lens are formulated. The main stages of the initial scheme of the transformation, incorporating the diffractive lens and replacement of the lenses' glasses by optical plastics, are presented. The efficiency of the suggested techniques of the optical layout process are demonstrated by using the example of the design and analysis of a zoom lens intended for use in security cameras for day or night vision.

Diffractive-refractive correction units for plastic compact zoom lenses.

A method of designing a plastic zoom lens with a diffractive-refractive hybrid corrector, comprising one diffractive lens and one refractive lens, is described. The efficiency of this method is demonstrated by designing a compact zoom lens for a mobile phone. This zoom design, incorporating lenses made only of two commercial optical plastics (polymethylmethacrylate and polycarbonate), provides high optical performance.

Design of the double-telecentric high-aperture diffractive-refractive objectives.

The possibility for achieving optical performance of objectives, including a minimum amount of diffractive lenses, comparable to optical performance of multiple-lens conventional objectives for nanolithography, is considered. The problem of chromatism connected with using excimer lasers is solved by applying aspheric substrates that help to reduce both axial color and spherochromatic aberration.

Design of achromatic and apochromatic plastic micro-objectives.

The possibility and the efficiency of using a single diffractive lens to achromatize and apochromatize micro-objectives with plastic lenses are shown. In addition, recommendations are given on assembling the starting configurations of the objectives and calculating the design parameters required for subsequent optimization. It is also shown that achievable optical performance of achromatic and apochromatic micro-objectives with plastic lenses satisfy the qualifying standards for cell-phone objectives and closed-circuit television (CCTV) cameras.

Design of combined pick-up optical heads.

A pseudoray method is suggested for the initial design for the composition of combined optical CD-DVD read-write heads. The effectiveness of the method is shown in the design of the optical system for the CD-DVD read-write heads.

Diffractive-refractive hybrid corrector for achro- and apochromatic corrections of optical systems.

The possibility is shown of achro- and apochromatic correction of an optical system with any residual chromatism by completing the system with a diffractive-refractive hybrid corrector comprising one diffractive lens and one or two refractive lenses.

Reduction of the distortion of diffractive-gradient-index high-resolution objectives.

The possibility of multiple reductions of the distortion of high-resolution monochromats that consist of diffractive and radial gradient-index lenses is shown. The desirable effect is achieved by mutual compensation of various order members. Design parameters and the field performances of objectives that confirm the effectiveness of a method, are presented.