Double-sided antireflection coated glass
By setting a multi-layer film structure on both surfaces of the coated glass, the problem that a single-layer anti-reflection film cannot protect the camera lens is solved, and the effect of high light transmittance and equalization spectrum is achieved. It is suitable for the camera optical protective cover, and has dustproof, waterproof and high temperature resistance.
Patent Information
- Application Number
- CN202422066787.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The existing single-layer anti-reflection film is not suitable for protecting camera lenses in coated glass, and cannot effectively reduce the reflection of light at multiple wavelengths, affecting the optical performance of the lens.
Double-sided anti-reflective coating glass is used to set a multi-layer film structure on both surfaces of the glass, including a film layer combination of Nb2O5 and SiO2 materials. Through the interference effect of the multi-layer film structure, the transmittance of light is enhanced and the reflectance is reduced.
It achieves a high light transmittance (more than 96%) in the visible light band of 400~700nm, and maintains the spectrum equality, does not change the color or ambient light color temperature of the subject, and has little impact on CMOS or CCD. It is suitable for camera optical protection covers, and has dustproof, waterproof and high temperature resistance.
Smart Images
Figure CN222975083U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coated glass, and particularly relates to a double-sided antireflection coated glass. Background Art
[0002] Existing transparent glasses will all generate reflected light. When transparent glasses are used in fields such as optical lenses, cover plates of photovoltaic modules, and architectural decoration glasses, it is necessary to reduce their light reflectance as much as possible and increase their transmittance.
[0003] Currently, antireflection coating treatment is usually carried out on the surface of transparent glass. The commonly used antireflection film is a single-layer film, which is a thin film with a lower refractive index plated on the glass surface. Through the antireflection film, the reflected light generated on the front and back surfaces of the film layer interferes with each other, thereby canceling out the reflected light and increasing the intensity of the transmitted light, making the glass surface have low reflection and high transmission performance. However, the single-layer film only has a completely antireflection effect on monochromatic light of a certain wavelength and is not suitable for protecting camera lenses. Content of the Utility Model
[0004] The purpose of the utility model is to provide a double-sided antireflection coated glass, effectively solving the problem that the coated glass with a single-layer antireflection film is not suitable for protecting camera lenses.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A double-sided antireflection coated glass, comprising a glass plate, a first coating film layer, and a second coating film layer. The glass plate includes a first surface and a second surface facing away from each other. The first coating film layer is provided on the first surface, and the second coating film layer is provided on the second surface.
[0007] The first coating film layer includes a first film layer, a second film layer, a third film layer, and a fourth film layer sequentially arranged outward from the first surface. The second coating film layer includes a fifth film layer, a sixth film layer, a seventh film layer, and an eighth film layer sequentially arranged outward from the second surface.
[0008] The materials of the first film layer, the third film layer, the fifth film layer, and the seventh film layer are all Nb 2 O 5 ., and the materials of the second film layer, the fourth film layer, the sixth film layer, and the eighth film layer are all SiO 2 .
[0009] The thicknesses of the first film layer and the fifth film layer are both 14 ± 1 nm, the thicknesses of the second film layer and the sixth film layer are both 27 ± 1 nm, the thicknesses of the third film layer and the seventh film layer are both 111 ± 2 nm, and the thicknesses of the fourth film layer and the eighth film layer are both 84 ± 2 nm.
[0010] Further, the glass plate is an ultra-clear glass plate with a thickness of 2 mm.
[0011] Further, the thickness of the first film layer and the fifth film layer is 14.2 nm, the thickness of the second film layer and the sixth film layer is 27.4 nm, the thickness of the third film layer and the seventh film layer is 111 nm, and the thickness of the fourth film layer and the eighth film layer is 84.2 nm.
[0012] Further, the reflectivity of the glass plate to light incident at an incident angle of 8° is less than or equal to 9%, and the transmittance of the glass plate to light incident at an incident angle of 0° is greater than or equal to 91%.
[0013] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:
[0014] The transmittance of the present utility model in the visible light band of 400 - 700 nm reaches more than 96%, with high and stable transmittance, and balanced transmission in the visible light band. As an optical protection cover for a camera, it will not change the color of the object being photographed, will not change the influence of the ambient light color temperature on the CMOS (or CCD), and thus is suitable for making an optical protection cover for a camera. It can clearly view objects, prevent dust and water, and be resistant to high temperatures. It has a wide transmission spectrum and has the functions of beauty and protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the present utility model.
[0016] List of reference numerals: ultra-clear glass plate 1; first surface 11; second surface 12; first film layer 2; second film layer 3; third film layer 4; fourth film layer 5; fifth film layer 6; sixth film layer 7; seventh film layer 8; eighth film layer 9. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] A double-sided antireflection coated glass, as Figure 1 shown, includes an ultra-clear glass plate 1 with a thickness of 2 mm, a first coating film layer, and a second coating film layer. The ultra-clear glass plate includes opposite first surface 11 and second surface 12. The first coating film layer is provided on the first surface 11, and the second coating film layer is provided on the second surface 12.
[0018] The first coating film layer includes a first film layer 2, a second film layer 3, a third film layer 4, and a fourth film layer 5 sequentially arranged outward from the first surface 11. The second coating film layer includes a fifth film layer 6, a sixth film layer 7, a seventh film layer 8, and an eighth film layer 9 sequentially arranged outward from the second surface.
[0019] The materials of the first film layer 2, the third film layer 4, the fifth film layer 6, and the seventh film layer 8 are all Nb 2 O 5, the materials of the second film layer 3, the fourth film layer 5, the sixth film layer 7, and the eighth film layer 9 are all SiO 2 , and the film layer reflection is red.
[0020] The thicknesses of the first film layer 2 and the fifth film layer 6 are both 14 ± 1 nm, the thicknesses of the second film layer 3 and the sixth film layer 7 are both 27 ± 1 nm, the thicknesses of the third film layer 4 and the seventh film layer 8 are both 111 ± 2 nm, and the thicknesses of the fourth film layer 5 and the eighth film layer 9 are both 84 ± 2 nm. In this embodiment, the thicknesses of the first film layer 2 and the fifth film layer 6 are both 14.2 nm, the thicknesses of the second film layer 3 and the sixth film layer 7 are both 27.4 nm, the thicknesses of the third film layer 4 and the seventh film layer 8 are both 111 nm, and the thicknesses of the fourth film layer 5 and the eighth film layer 9 are both 84.2 nm.
[0021] In this embodiment, the iron content of the ultra-clear glass plate 1 is lower than that of the ordinary white glass plate, and the light transmittance is also higher. The reflectance of the ultra-clear glass plate 1 for light incident at an incident angle of 8° is less than or equal to 9%, and the transmittance of the ultra-clear glass plate 1 for light incident at an incident angle of 0° is greater than or equal to 91%.
[0022] When visible light (400 - 700 nm) rays are incident from the outermost film layer (the fourth film layer or the eighth film layer), the average light transmittance of the visible light rays incident at an incident angle of 0° - 42° in this embodiment reaches over 96%. The light transmittance is high and stable, and the transmission in the visible light band is balanced. As a camera optical protective cover, it will not change the color of the object being photographed, will not change the influence of the ambient light color temperature on the CMOS (or CCD), so it is suitable for making a camera optical protective cover. Photography is not only clear but also can protect the lens from damage, prevent dust and water from entering, and play a role in beautification.
[0023] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the essence of the present utility model should also belong to the protection scope of the present utility model.
Claims
1. A double-sided anti-reflection coated glass, characterized in that: The invention comprises a glass plate, a first coating film layer and a second coating film layer, wherein the glass plate comprises a first surface and a second surface opposite to each other, the first coating film layer is arranged on the first surface, and the second coating film layer is arranged on the second surface; The first coating film layer includes a first film layer, a second film layer, a third film layer and a fourth film layer sequentially arranged outward from the first surface, and the second coating film layer includes a fifth film layer, a sixth film layer, a seventh film layer and an eighth film layer sequentially arranged outward from the second surface; The materials of the first film layer, the third film layer, the fifth film layer and the seventh film layer are all Nb2O5, and the materials of the second film layer, the fourth film layer, the sixth film layer and the eighth film layer are all SiO2; The thickness of the first film layer and the fifth film layer are both 14±1nm, the thickness of the second film layer and the sixth film layer are both 27±1nm, the thickness of the third film layer and the seventh film layer are both 111±2nm, and the thickness of the fourth film layer and the eighth film layer are both 84±2nm.
2. The double-sided anti-reflection coated glass according to claim 1, characterized in that: The glass plate is an ultra-clear glass plate with a thickness of 2 mm.
3. The double-sided anti-reflection coated glass according to claim 2, characterized in that: The thickness of the first film layer and the fifth film layer are both 14.2 nm, the thickness of the second film layer and the sixth film layer are both 27.4 nm, the thickness of the third film layer and the seventh film layer are both 111 nm, and the thickness of the fourth film layer and the eighth film layer are both 84.2 nm.