Lobster eye lens with reflection barrier being revolution surface formed by planar circular-arc bus

Abstract

The invention discloses a lobster eye lens with a reflection barrier being a revolution surface formed by a planar circular-arc bus, which belongs to the technical field of optical elements. In the conventional lobster eye lens, a micro-channel tube reflection barrier is a plane, so that the imaging confusion disc diameter is large, and the spatial resolution of the lobster eye lens is difficult to increase. The lobster eye lens provided by the invention consists of a plurality of micro-channel tubes; the axis of each micro-channel tube is the radius of spheres with the same spherical center along each azimuth and pitching direction; and each micro-channel tube is formed by enclosing four same reflection barriers which are symmetrical to the axes of the micro-channel tubes pairwise. The lobster eye lens is characterized in that the reflection barrier is a revolution curved surface reflection barrier which is formed by revolving a planar circular-arc bus; the planar circular-arc bus starts from the incident end of each micro-channel tube and ends at the emergent end of the micro-channel tube; the curvature radius R of the planar circular-arc bus is determined by a formula shown in the specifications; in the formula, l refers to the chord length of the planar circular-arc bus; gamma is the field angle of each micro-channel tube; the extension line of the chord of the planar circular-arc bus intersects with the spherical center O; and the revolving axis of the planar circular-arc bus passes through the spherical center O, and is vertical to the extension line of the chord of the planar circular-arc bus.

Description

technical field [0001] The invention relates to a lobster eye lens whose reflective wall is a curved surface of revolution formed by a plane arc generatrix, and belongs to the technical field of optical elements. Background technique [0002] The lobster eye lens is based on the structure of the biological lobster eye. It uses the reflection of the light on the inner wall of the lens, that is, the reflection wall, to achieve convergence. Therefore, there will be no dispersion and chromatic aberration when the light is refracted. This makes the lobster eye lens more sensitive to the spectrum. It has strong adaptability, and has a good convergence effect in the infrared band, ultraviolet band, and even X-ray band. Moreover, the components of the lobster eye lens are highly symmetrical in spatial arrangement, so there is no off-axis aberration in the lobster eye lens, only on-axis point spherical aberration, and the viewing angle is basically unlimited. Existing lobster eye le...

AI Technical Summary

Problems solved by technology

[0004] The caliber a of the microchannel tube 1 is determined. When the infinite parallel light enters the lobster eye lens, see figure 2 As shown, the light is reflected by the reflective wall 2, and the reflected light is incident on the focal plane 3, and the diameter b of the diffuse spot at the focal plane 3 is the projection width d of the length c of the reflective wall 2 in the parallel light incident direction divided by the reflected light and the focal plane The sine value of the angle α' of surface 3, because the sine value is always less than 1 in value, therefore, the diameter b of the diffuse spot is always greater than the projection width d, therefore, it is difficult to improve the spatial resolution of the lobster eye lens

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