# lenticularHaloGenerator() Generates a lenticular halo image. ``` class func lenticularHaloGenerator() -> any CIFilter & CILenticularHaloGenerator ``` ## Return Value The generated image. ## Discussion This method generates a lenticular halo image. You commonly combine this effect with an image to simulate a halo generated by the spread of light on a lens. The lenticular halo generator filter uses the following properties: - `center`: A `vector` representing the center of the lens flare as a [`CIVector`](/documentation/CoreImage/CIVector). - `color`: A [`CIColor`](/documentation/CoreImage/CIColor) controlling the proportion of red, green, and blue halos. - `haloWidth`: A `float` representing the halo width as an . - `haloRadius`: A `float` representing the halo radius as an . - `haloOverlap`: A `float` representing the overlap of red, green, and blue halos as an . A value of 1 results in a full overlap. - `striationStrength`: A `float` representing the brightness of the rainbow-colored halo area as an . - `striationContrast`: A `float` representing the contrast of the rainbow-colored halo area as an . - `time`: A `float` representing the addition of brightness to the halo as an . The following code creates a filter that generates a lenticular halo image: ```swift func lenticularHalo() -> CIImage { let lenticularHaloGenerator = CIFilter.lenticularHaloGenerator() lenticularHaloGenerator.center = CGPoint(x: 200, y: 200) lenticularHaloGenerator.color = CIColor(red: 1.2, green: 2.7, blue: 2.5) lenticularHaloGenerator.haloWidth = 87 lenticularHaloGenerator.haloRadius = 70 lenticularHaloGenerator.haloOverlap = 0.77 lenticularHaloGenerator.striationStrength = 0.50 lenticularHaloGenerator.striationContrast = 1.00 lenticularHaloGenerator.time = 0.00 return lenticularHaloGenerator.outputImage! } ```  --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)