CN-122018057-A - Optical element and optical device

Abstract

The application discloses an optical element and an optical device, wherein the optical element comprises a body and a plurality of microstructure units, the microstructure units comprise fusion surfaces and optical function surfaces which are connected with the fusion surfaces and protrude out of the body, and an included angle theta is formed between the optical function surfaces and the fusion surfaces, so that the included angle theta epsilon (0 degree and 90 degrees) is met. The microstructure unit disclosed by the application deflects incident light through fine wave front modulation on the incident light to provide an optical signal which interferes with imaging of the periphery of the retina, and the 'neural adaptation' of the periphery of the retina to the original optical signal is disturbed, so that the neural center of the retina is confused, and the further development of ametropia is inhibited.

Inventors

• YU HAOMO
• HOU JIALING
• FENG TAO

Assignees

• 苏州明世光学科技有限公司

Dates

Publication Date

20260512

Application Date

20260413

Claims (17)

1. 1. An optical element, comprising: A body having a bright viewing zone and a regulatory region disposed about the bright viewing zone, the bright visual area is used for generating a clear vision signal; the body has a radial direction and a thickness direction perpendicular to the radial direction; The microstructure units are arranged in the regulating region and integrally formed with the body, and each microstructure unit comprises a fusion surface connected with the body and an optical functional surface connected with the fusion surface and protruding out of the body along the thickness direction; the optical function surface is configured to deflect incident light rays when the incident light rays pass through the optical function surface along the thickness direction, so that a blurred image is formed on the periphery of the retina, the imaging quality of the periphery of the retina is reduced, and the abnormal development of ametropia is further inhibited; The included angle theta refers to the minimum angle between the normal line at the first centroid or the normal line along the first centroid tangent plane and the normal line at the second centroid or the normal line along the second centroid tangent plane.
2. 2. An optical element according to claim 1, wherein said optically functional surface and said fusion surface are planar, said angle θ being the smallest angle between the normal at said first centroid and the normal at said second centroid, or The optical function surface and the fusion surface are both curved surfaces, and the included angle theta is the minimum included angle between the normal line along the first centroid and the normal line along the second centroid or The optical function surface is a curved surface, the fusion surface is a plane, the included angle theta is the minimum included angle between the normal line along the tangent plane of the first centroid and the normal line at the second centroid, or The optical function surface is a plane, the fusion surface is a curved surface, and the included angle theta is the minimum included angle between the normal line at the first centroid and the normal line along the second centroid tangent plane.
3. 3. An optical element according to claim 2, wherein the microstructure unit further comprises a top surface, the top surface is connected to a side of the optical functional surface away from the fusion surface and is disposed opposite to the fusion surface in the thickness direction, and the top surface is a plane or a curved surface.
4. 4. An optical element according to claim 2 or 3, wherein the curved surface is selected from any one of spherical, aspherical, freeform, cylindrical, toroidal/toric.
5. 5. An optical element according to claim 2, wherein said optical function surface is plural and an angle θ between any one of said optical function surfaces and said fusion surface is the same as each other, or The optical function surfaces are multiple, and included angles theta between at least two of the multiple optical function surfaces and the fusion surface are different from each other.
6. 6. An optical element according to claim 5, wherein said body has oppositely disposed first and second surfaces in said thickness direction; When the included angle theta meets theta epsilon (0 DEG, 90 DEG) and the optical function surface protrudes out of the first surface, the deflection capability of the optical function surface meets the following conditions: ; When the included angle theta meets theta epsilon (0 DEG, 90 DEG) and the optical function surface protrudes out of the second surface, the deflection capability of the optical function surface meets the following conditions: ; Wherein P represents the deflection capability in centimeters per meter (cm/m) and n represents the refractive index of the material of the microstructure unit.
7. 7. An optical element according to claim 6, wherein the deflection power P further satisfies 0< P <150.
8. 8. An optical element according to claim 6, wherein said included angle θ further satisfies θ∈ [45 °,90 °); When the microstructure unit is arranged on the second surface, the included angle theta further satisfies the conditions that theta epsilon [10 degrees, 55 degrees ].
9. 9. An optical element according to claim 6, characterized in that the modulation transfer function MTF of the optical element on the retina, measured with a pupil having a diameter of 3 to 5mm centered on any point within a range of 5 to 15mm from the reference point of the body, satisfies the condition MTF e [0.05,1 ] in a spatial frequency range of 0.5 to 10 lp/mm and MTF e [0.01,0.7] in a spatial frequency range of 10 to 30 lp/mm.
10. 10. An optical element according to claim 6, wherein when the optical function faces are plural and angles θ between at least two of the plural optical function faces and the fusion face are different from each other, deflection capacities of at least two of the optical function faces are different from each other.
11. 11. An optical element according to claim 1, wherein at least two of said microstructure elements are connected to each other, or Any two of the microstructure units are arranged at intervals.
12. 12. An optical element according to claim 11, wherein the filling ratio F of the microstructure units in the regulation region satisfies 20% F≤90%.
13. 13. An optical element according to claim 12, wherein the filling ratio of the microstructure elements in the radial direction is graded, or A plurality of the microstructure elements are uniformly distributed within the regulatory region.
14. 14. An optical element according to claim 1, wherein a plurality of said microstructure elements are symmetrically distributed within said regulatory region, or A plurality of the microstructure units are asymmetrically distributed in the regulatory region.
15. 15. An optical element as recited in claim 1, wherein said regulatory region further has a void region, said optical element further comprising: the micro optical units are arranged in the blank area and connected with the body, and are used for being matched with the body to form a stimulation signal.
16. 16. An optical element according to claim 15, wherein the micro optical unit is a transparent structure, at least one selected from a microlens, a microprism, and a microprism, or the micro optical unit is an incompletely transparent structure, at least one selected from a dot-like structure, a spiral line structure, a frosted structure, and a concentric ring structure; the stimulus signal includes at least one of low order aberrations, reduced or improved contrast, higher order aberrations, retinal diffuse spots, reduced or improved color saturation.
17. 17. An optical device comprising the optical element of any one of claims 1-16.

Description

Optical element and optical device Technical Field The invention belongs to the field of optical elements, and particularly relates to an optical element and an optical device. Background In the field of refractive error management, there are a number of solutions based on optical intervention. The frame optical device designed by adopting the peripheral defocus principle utilizes the optical design to form defocus signals on the periphery of the retina so as to inhibit abnormal development of ametropia while providing clear central vision. However, such out-of-focus optical elements may develop "product resistance" after prolonged wear, resulting in a decrease in their management effect over time. Another approach is to slow down the abnormal progression of refractive errors by directly reducing the retinal contrast (e.g., an optical element designed with DOT scattering points), but such techniques tend to affect the aesthetics of the optical element. For this reason, there is a continuing need to explore an optical intervention that is long-term, effective and visually acceptable. Disclosure of Invention The application aims to provide an optical element and an optical device, and provides a new choice of refractive error management with continuous effect and better wearing experience for patients through a series of precise microstructure units prepared on the surface of the optical element. Technical solution the present disclosure provides an optical element, comprising: A body having a bright viewing zone and a regulatory region disposed about the bright viewing zone, the bright visual area is used for generating a clear vision signal; the body has a radial direction and a thickness direction perpendicular to the radial direction; The microstructure units are arranged in the regulating region and integrally formed with the body, and each microstructure unit comprises a fusion surface connected with the body and an optical functional surface connected with the fusion surface and protruding out of the body along the thickness direction; the optical function surface is configured to deflect incident light rays when the incident light rays pass through the optical function surface along the thickness direction, so that a blurred image is formed on the periphery of the retina, the imaging quality of the periphery of the retina is reduced, and the abnormal development of ametropia is further inhibited; The included angle theta refers to the minimum angle between the normal line at the first centroid or the normal line along the first centroid tangent plane and the normal line at the second centroid or the normal line along the second centroid tangent plane. In some embodiments, the optically functional surface and the blend surface are both planar, and the angle θ is the smallest angle between the normal at the first centroid and the normal at the second centroid, or The optical function surface and the fusion surface are both curved surfaces, and the included angle theta is the minimum included angle between the normal line along the first centroid and the normal line along the second centroid or The optical function surface is a curved surface, the fusion surface is a plane, the included angle theta is the minimum included angle between the normal line along the tangent plane of the first centroid and the normal line at the second centroid, or The optical function surface is a plane, the fusion surface is a curved surface, and the included angle theta is the minimum included angle between the normal line at the first centroid and the normal line along the second centroid tangent plane. In some embodiments, the microstructure unit further comprises a top surface, wherein the top surface is connected with one side, away from the fusion surface, of the optical functional surface and is opposite to the fusion surface in the thickness direction, and the top surface is a plane or a curved surface. In some embodiments, the curved surface is selected from any one of a spherical surface, an aspherical surface, a free-form surface, a cylindrical surface, a toroidal surface/a toric surface. In some embodiments, the optical function surface is a plurality of the same included angle theta between any one of the optical function surfaces and the fusion surface, or The optical function surfaces are multiple, and included angles theta between at least two of the multiple optical function surfaces and the fusion surface are different from each other. In some embodiments, the body has oppositely disposed first and second surfaces in the thickness direction; when the included angle theta meets theta epsilon (0 DEG, 90 DEG) and the optical function surface protrudes out of the first surface, the deflection capability of the optical function surface meets the following conditions: ; When the included angle theta meets theta epsilon (0 DEG, 90 DEG) and the optical function surface protrudes out of the second surface, the defle