摘要:
A diffractive element (2) that comprises a set of rectangular grating pixels (1) with a grating structure of grating period (D) and grating tilt (a), whilst at least some grating pixels (1) have different grating period (D) and/or different grating tilt (a) and at least some grating pixels (1) are in direct contact with each other. The set of grating pixels (1) comprises grating pixels (1) generally of various dimensions (Lx) and (Ly), whilst the dimensions (Lx) and (Ly) of the grating pixels (1) with the same grating period (D) and the same grating tilt (a) are such that the lines of the grating structures of these adjacent grating pixels (1) with the same grating period (D) and the same grating tilt (a) continue on through their common boundary. Additionally, a method of creation of the diffractive element (2) is described herein.
摘要:
A diffraction grating (10) is specified, comprising: a substrate (1); a grating area (3) having, in a direction running parallel to the substrate (1), a periodic arrangement of first areas (31) with a first grating material and second areas (32) with a second grating material, wherein the first grating material and the second grating material are solid materials with different indices of refraction; and a reflection-reducing or reflection-increasing layer system (4) having at least two layers (41, 42) with different indices of refraction, wherein the reflection-reducing or reflection-increasing layer system (4) is arranged on one side of the grating area (3) facing away from the substrate (1), and an additional layer system (2) having at least two layers (21, 22) with different indices of refraction is arranged between the substrate (1) and the grating area (3). A method for producing the diffraction grating (10) is also specified.
摘要:
The present invention relates generally to flexible thin films for use in electro-active optical systems. Embodiments of the invention include thin films having diffractive structures on at least one surface of the film, and methods of making such films. Embodiments of the invention also include lens blanks that comprise such thin films. Embodiments of the invention also include methods of making lens blanks that comprise such thin films.