An ultra-wide-angle anti-dazzle optical lens for a vehicle-mounted camera module

Abstract

The utility model relates to the field of vehicle-mounted optical equipment discloses a kind of super wide-angle anti-glare optical lens for vehicle-mounted camera module, including a kind of super wide-angle anti-glare optical lens for vehicle-mounted camera module, including two-section lens barrel and optical lens group, the optical lens group is arranged inside two-section lens barrel, two-section lens barrel includes upper cylinder, lower thread cylinder and annular step, annular step is fixedly connected inside lower thread cylinder, upper cylinder is threadedly connected between lower thread cylinder, the bottom surface of lower thread cylinder is fixedly connected with arc inclined plate.In the utility model, through the multiple anti-glare design of optical lens group, the composite film layer of first lens realizes preliminary strong light scattering and light ray antireflection, the light-blocking structure of third lens filters oblique strong light, the light-absorbing structure of lens barrel inner wall absorbs stray light, triple coordination greatly improves anti-glare effect, effectively solves the existing lens halo, ghost problem under strong light, guarantees the imaging quality under complex illumination environment.

Claims

1. An ultra-wide-angle anti-glare optical lens for vehicle-mounted camera modules, characterized in that: It includes a two-section lens barrel (1) and an optical lens group (2). The optical lens group (2) is disposed inside the two-section lens barrel (1). The two-section lens barrel (1) includes an upper cylinder (11), a lower threaded cylinder (12) and an annular step (13). The annular step (13) is fixedly connected inside the lower threaded cylinder (12). The upper cylinder (11) and the lower threaded cylinder (12) are threadedly connected. An arc-shaped inclined plate (14) is fixedly connected to the bottom surface of the lower threaded cylinder (12). The optical lens group (2) includes a first lens (21), a second lens (22), a third lens (23), a fourth lens (24), a fifth lens (25), a sixth lens (26), and a filter (27) arranged sequentially along the incident direction of light. The first lens (21) and the second lens (22) are bonded and fixed to the inside of the upper cylinder (11) from top to bottom with an adhesive. The third lens (23) is bonded and fixed to the upper side inside the lower threaded cylinder (12) with an adhesive. The fourth lens (24), the fifth lens (25), and the sixth lens (26) are arranged in the annular step (13) from top to bottom for axial positioning. The filter (27) is fixedly connected to the bottom end of the lower threaded cylinder (12). An annular pressure ring is provided between the third lens (23), the fourth lens (24), the fifth lens (25), and the sixth lens (26). The annular pressure ring is used to press the fourth lens (24), the fifth lens (25), and the sixth lens (26) into the inside of the lower threaded cylinder (12).

2. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The outer surface of the first lens (21) is provided with a composite film layer, which includes an anti-glare film and an anti-reflective film stacked in sequence.

3. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The inner walls of the upper cylinder (11) and the annular step (13) are coated with a light-absorbing coating.

4. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The annular pressure ring is an elastic metal pressure ring made of beryllium copper, and the inner ring of the pressure ring is provided with a flexible buffer layer made of silicone material.

5. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The first lens (21) is a glass aspherical lens with positive optical power. Its image side is convex and its object side is concave.

6. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The second lens (22) is a resin aspherical lens with negative optical power, and both its image side and object side are convex.

7. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The third lens (23) is a glass spherical lens with positive optical power. Its image side is concave and its object side is convex. The inner surface of the third lens (23) is coated with a microstructure light-shielding layer, which can filter oblique strong light.

8. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The fourth lens (24) is a resin spherical lens with negative optical power, and both its image side and object side are concave.

9. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The fifth lens (25) is a glass aspherical lens with positive optical power. Its image side is convex and its object side is concave.

10. The ultra-wide-angle anti-glare optical lens for a vehicle-mounted camera module according to claim 1, characterized in that: The sixth lens (26) is a glass spherical lens with negative optical power. Its image side is concave and its object side is convex.

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