Integrated super-lens optical system

Abstract

The utility model relates to an integrated super-lens optical system, which belongs to the field of optical systems and comprises a sensor and an integrated super-lens, and the distance from the integrated super-lens to the sensor is adjustable. The integrated super lens comprises a diaphragm layer, a substrate material layer, a super lens structure layer and a light filtering layer. The diaphragm layer is composed of a light transmission area and a light isolation area, the light isolation area achieves cut-off under the working wavelength, and the light transmission area achieves high transmittance under the working wavelength. The super-lens structure layer comprises a structure unit and a filling area. According to the integrated super-lens optical system, the characteristic that the super-lens plane optical element is beneficial to integration is utilized, and all assemblies of the optical system and the super-lens are integrated to achieve integration.

Description

Technical Field

[0001] This application belongs to the field of optical systems, and specifically relates to an integrated superlens optical system. Background Technology

[0002] Traditional optical systems include components such as apertures, lens groups, filters, and sensors. By designing the surface shape, aperture, thickness, and relative distance of each component, specific functions such as optical imaging, laser scanning, and projection illumination can be achieved.

[0003] However, the components of traditional optical systems are basically separate, and the relative distances between the components need to be strictly controlled to achieve certain optical performance. Therefore, traditional optical systems place high demands on assembly. In addition, the cumulative relative distances between adjacent components result in a relatively long overall optical length of the system, which is not conducive to system miniaturization. Utility Model Content

[0004] This application provides an integrated superlens optical system to at least solve the above-mentioned technical problems existing in the prior art.

[0005] This application provides an integrated superlens optical system, including a sensor and an integrated superlens, the distance between the integrated superlens and the sensor being adjustable; the integrated superlens includes an aperture layer, a substrate material layer, a superlens structure layer, and a filter layer; the aperture layer consists of a light-transmitting area and a light-blocking area, the light-blocking area achieving cutoff at the working wavelength, and the light-transmitting area achieving high transmittance at the working wavelength; the superlens structure layer includes structural units and filling areas.

[0006] In one embodiment, the shape of the structural unit is one of a cylinder, a rectangular cylinder, a square cylinder, or a ring cylinder.

[0007] In one embodiment, the structural units are arranged in a centrally symmetrical radial arrangement.

[0008] In one possible implementation, the sensor is a CMOS or a CCD.

[0009] In one possible implementation, the operating wavelength is 450nm-650nm.

[0010] In one embodiment, an antireflection coating layer is also included.

[0011] In a preferred embodiment, starting from the incident direction of light, the integrated superlens sequentially includes an aperture layer, an anti-reflection coating layer, a substrate material layer, a superlens structure layer, an anti-reflection coating layer, and a filter layer.

[0012] In a preferred embodiment, starting from the incident direction of light, the integrated superlens sequentially includes an aperture layer, a filter layer, an anti-reflection coating layer, a substrate material layer, a superlens structure layer, and an anti-reflection coating layer.

[0013] In a preferred embodiment, starting from the incident direction of light, the integrated superlens sequentially includes an aperture layer, an anti-reflection coating layer, a superlens structure layer, a substrate material layer, an anti-reflection coating layer, and a filter layer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the integrated superlens optical system in Embodiment 1 of this application;

[0015] Figure 2 This is a schematic diagram of the optical system in Embodiment 1 of this application;

[0016] Figure 3 This is a schematic diagram of the aperture layer structure in Embodiment 1 of this application;

[0017] Figure 4 This is a schematic diagram of the integrated superlens optical system in Embodiment 2 of this application;

[0018] Figure 5 This is a schematic diagram of the array unit in Embodiment 2 of this application;

[0019] Figure 6 This is a schematic diagram of the integrated superlens optical system in Embodiment 3 of this application;

[0020] Figure 7 This is a schematic diagram of the integrated superlens optical system in Embodiment 4 of this application;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Integrated superlens; 11. Aperture layer; 111. Light-blocking area; 112. Light-transmitting area; 12. Substrate material layer; 13. Superlens structure layer; 131. Structural unit; 132. Filling area; 14. Filter layer; 15. Anti-reflective coating layer; 2. Sensor. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings.

[0024] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Embodiment 1 of this application discloses an integrated superlens optical system, such as Figure 1 As shown, its main structure includes an integrated superlens 1 and a sensor 2, with the distance between the integrated superlens 1 and the sensor 2 adjustable. The integrated superlens 1 includes an aperture layer 11, a substrate material layer 12, a superlens structure layer 13, and a filter layer 14. The aperture layer 11 consists of a light-transmitting area 112 and a light-blocking area 111. The light-blocking area 111 achieves cutoff at the working wavelength, while the light-transmitting area 112 achieves high transmittance at the working wavelength. The superlens structure layer 13 includes structural units 131 and filling areas 132.

[0026] The sensor 2 can be either CMOS (Complementary Metal Oxide Semiconductor) or CCD (Charge-Coupled Device).

[0027] like Figure 2 As shown, the distance from the integrated superlens 1 to the sensor 2 is F. Focusing is achieved by adjusting F.

[0028] like Figure 3 As shown, the aperture stop layer 11 consists of a light-blocking region 111 and a light-transmitting region 112. The aperture stop layer 11 is achieved through a coating. Within the operating wavelength range, the light-blocking region 111 cuts off light at the operating wavelength, while the light-transmitting region 112 achieves high transmittance at the operating wavelength, thus functioning as a physical aperture stop. For example, for an integrated superlens optical system with an operating wavelength of 450nm-650nm, the coating achieves a cutoff effect on the light-blocking region 111, which can be understood as a light transmittance T < 0.001% for wavelengths less than 450nm and greater than 650nm; while achieving high transmittance in the light-transmitting region 112 can be understood as a light transmittance T > 90% for wavelengths between 450nm and 650nm.

[0029] Based on Embodiment 1, in order to achieve higher transmittance of the superlens structure layer 13, the structure of the integrated superlens 1 can be further enhanced by adding at least one antireflective coating layer 15. That is, the integrated superlens 1 includes an aperture stop layer 11, an antireflective coating layer 15, a substrate material layer 12, a superlens structure layer 13, and a filter layer 14, each constituting one layer of the integrated superlens 1. The relative order between the different layers of the integrated superlens 1 can be adjusted. Several feasible embodiments for adding two antireflective coating layers 15 are provided below.

[0030] like Figure 4As shown, Embodiment 2 provides an integrated superlens 1, in which, starting from the incident direction of light, the functional layers are sequentially arranged as follows: aperture layer 11, antireflection film layer 15, substrate material layer 12, superlens structure layer 13, antireflection film layer 15, and filter layer 14. The filter layer 14 further filters the light, selecting a wavelength that meets the application requirements of the sensor 2.

[0031] like Figure 5 As shown, the superlens structure layer 13 includes superlens structure units 131 and filling regions 132. The shapes of the superlens structure units 131 include, but are not limited to, cylinders, rectangular prisms, square prisms, and annular prisms. The superlens structure units 131 in the superlens structure layer 13 are generally arranged radially in a centrally symmetrical manner. The filling regions 132 of the superlens structure layer 13 serve to protect the superlens structure units and also serve to provide a planarization layer for other layers.

[0032] By designing the shape of the superlens structure unit 131 and the arrangement of the superlens structure unit 131 in the superlens structure layer 13, a specific phase distribution φ is achieved in the superlens structure layer 13. LENS Provides optical power

[0033] The antireflective coating 15 is achieved through coating and serves to improve the transmittance of the superlens structure layer 13.

[0034] like Figure 6 As shown, Embodiment 3 provides an integrated superlens 1, in which the functional layers are sequentially arranged from the incident direction of light as aperture layer 11, filter layer 14, anti-reflection coating layer 15, substrate material layer 12, superlens structure layer 13 and anti-reflection coating layer 15.

[0035] like Figure 7 As shown, Embodiment 4 provides an integrated superlens 1, in which the functional layers are sequentially arranged from the incident direction of light as follows: aperture layer 11, antireflective coating layer 15, superlens structure layer 13, substrate material layer 12, antireflective coating layer 15 and filter layer 14.

[0036] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An integrated superlens optical system, characterized in that, It includes a sensor and an integrated superlens, with the distance between the integrated superlens and the sensor adjustable; The integrated superlens includes an aperture layer, a substrate material layer, a superlens structure layer, and a filter layer; The aperture layer consists of a light-transmitting area and a light-blocking area. The light-blocking area achieves cutoff at the working wavelength, while the light-transmitting area achieves high transmittance at the working wavelength. The superlens structure layer includes structural units and filling regions.

2. The integrated superlens optical system according to claim 1, characterized in that: The shape of the structural unit is one of the following: cylinder, rectangular column, square column, or annular column.

3. The integrated superlens optical system according to claim 1, characterized in that: The structural units are arranged radially in a centrally symmetrical manner.

4. The integrated superlens optical system according to claim 1, characterized in that: The sensor is either a CMOS or a CCD.

5. The integrated superlens optical system according to claim 1, characterized in that: The operating wavelength is 450nm-650nm.

6. The integrated superlens optical system according to claim 1, characterized in that: It also includes at least one antireflective coating layer.

7. The integrated superlens optical system according to claim 6, characterized in that: Starting from the direction of light incidence, the integrated superlens sequentially includes an aperture layer, an anti-reflection coating layer, a substrate material layer, a superlens structure layer, an anti-reflection coating layer, and a filter layer.

8. The integrated superlens optical system according to claim 6, characterized in that: Starting from the direction of light incidence, the integrated superlens sequentially includes an aperture layer, a filter layer, an anti-reflection coating layer, a substrate material layer, a superlens structure layer, and an anti-reflection coating layer.

9. The integrated superlens optical system according to claim 6, characterized in that: Starting from the direction of light incidence, the integrated superlens sequentially includes an aperture layer, an anti-reflection coating layer, a superlens structure layer, a substrate material layer, an anti-reflection coating layer, and a filter layer.

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