Telescope objective optical lens

Abstract

The utility model provides an optical lens of a telescope objective lens, which is characterized in that a body adopts a ZK9 material as a base material for processing, the body is sequentially provided with an eighth film layer, a seventh film layer, a sixth film layer, a fifth film layer, a fourth film layer, a third film layer, a second film layer and a first film layer from left to right, and the eighth film layer is made of silicon dioxide with the thickness of 54.75 nm. The seventh film layer is made of zirconium dioxide with the thickness of 92.65 nm, the sixth film layer is made of aluminum oxide with the thickness of 191.48 nm, the fifth film layer is made of lanthanum titanate with the thickness of 85.32 nm, the fourth film layer is made of magnesium fluoride with the thickness of 113.41 nm, the third film layer is made of aluminum oxide with the thickness of 150.38 nm, the second film layer is made of magnesium fluoride with the thickness of 85.05 nm, the first film layer is made of zirconium dioxide with the thickness of 28.52 nm, the refractive index is 1.62, and the transmittance is 8.0%.

Description

Technical Field

[0001] The utility model relates to optical technology processing, especially a telescope objective optical lens. Background Art

[0002] The selection of optical glass usually considers refractive index, transparency, transmittance, Abbe number, etc. Infrared objectives are usually made of germanium or chalcogenide glass, while white light objectives are usually made of glasses such as K9, ZK9, ZF6, ZK9, etc. Usually, the purity of the glass will affect the various properties of the glass. Necessary processing of the glass is an important means to ensure that the glass meets the design requirements. Usually, the processing includes processes such as cutting, edging, polishing, cleaning, coating, etc. Coating is usually carried out by a vacuum coating machine. By adopting different film system designs, the performance of the optical glass can be improved. Summary of the Invention

[0003] The purpose of the utility model is to provide a telescope objective optical lens, which uses ZK9 material as the base material, and through coating processing on the lens after polishing is completed, controls the transmission wavelength range of 450 - 900 nm, the refractive index is controlled at 1.62, and the transmittance is 8.0%.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a telescope objective optical lens, including a body, characterized in that: the body is processed using ZK9 material as the base material, and the body is sequentially provided with an eighth film layer, a seventh film layer, a sixth film layer, a fifth film layer, a fourth film layer, a third film layer, a second film layer, and a first film layer from left to right;

[0005] The eighth film layer is silicon dioxide with a thickness of 54.75 nm, the seventh film layer is zirconium dioxide with a thickness of 92.65 nm, the sixth film layer is aluminum oxide with a thickness of 191.48 nm, the fifth film layer is lanthanum titanate with a thickness of 85.32 nm, the fourth film layer is magnesium fluoride with a thickness of 113.41 nm, the third film layer is aluminum oxide with a thickness of 150.38 nm, the second film layer is magnesium fluoride with a thickness of 85.05 nm, and the first film layer is zirconium dioxide with a thickness of 28.52 nm.

[0006] The beneficial effects of the utility model are mainly reflected in that first, the film layer is designed according to the design requirements. Through the design of different film layers and thicknesses, the needs of customers are met. After coating, the refractive index is 1.62, and then the transmittance after coating is controlled at 8.0%, and visible light with a wavelength of 450 - 900 nm is used. Brief Description of the Drawings

[0007] Figure 1 is the structural diagram of the utility model;

[0008] Figure 2 is the enlarged view of part A set by the utility model. Detailed implementation mode

[0009] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0010] A telescope objective optical lens includes a body, and is characterized in that: the body 1 is processed with ZK9 material as the base material, and the body is sequentially provided with an eighth film layer 9, a seventh film layer 8, a sixth film layer 7, a fifth film layer 6, a fourth film layer 5, a third film layer 4, a second film layer 3, and a first film layer 2 from left to right;

[0011] The eighth film layer 9 is silicon dioxide with a thickness of 54.75 nm, the seventh film layer 8 is zirconia with a thickness of 92.65 nm, the sixth film layer 7 is aluminum oxide with a thickness of 191.48 nm, the fifth film layer 6 is lanthanum titanate with a thickness of 85.32 nm, the fourth film layer 5 is magnesium fluoride with a thickness of 113.41 nm, the third film layer 4 is aluminum oxide with a thickness of 150.38 nm, the second film layer 3 is magnesium fluoride with a thickness of 85.05 nm, and the first film layer 2 is zirconia with a thickness of 28.52 nm. The ZK9 material has good heat resistance, corrosion resistance, and radiation resistance, and can maintain stable performance in extreme environments. After coating, the refractive index is 1.62, which is beneficial to eliminating monochromatic aberration and improving the imaging quality of the optical system. Then the transmittance after coating is controlled at 8.0%, and visible light with a wavelength of 450 - 900 nm is used. The ZK9 material used in this application has high transparency, good optical performance, and high-precision processing performance.

Claims

1. An optical lens for a telescope objective, comprising a body, characterized in that: The body (1) is processed using ZK9 material as the base material. From left to right, the body is sequentially provided with an eighth film layer (9), a seventh film layer (8), a sixth film layer (7), a fifth film layer (6), a fourth film layer (5), a third film layer (4), a second film layer (3), and a first film layer (2). The eighth film layer (9) is silicon dioxide with a thickness of 54.75 nm, the seventh film layer (8) is zirconium dioxide with a thickness of 92.65 nm, the sixth film layer (7) is aluminum oxide with a thickness of 191.48 nm, the fifth film layer (6) is lanthanum titanate with a thickness of 85.32 nm, the fourth film layer (5) is magnesium fluoride with a thickness of 113.41 nm, the third film layer (4) is aluminum oxide with a thickness of 150.38 nm, the second film layer (3) is magnesium fluoride with a thickness of 85.05 nm, and the first film layer (2) is zirconium dioxide with a thickness of 28.52 nm.

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