How to achieve this shadow lighting effect? And what's the background?

Can someone please help identify the Lighting Setups for these pictures? And also what's the background here, with the flooring etc?

Could be something as inexpensive as a Andoer SN-29 Flash Concentrator Conical Snoot

Or something much more expensive, which is more likely.

I remember in the days of film photographers used old venetian blinds to get a similar effect. In fact it is/was termed “venetian blind effect”. These days you can get something similar using Photoshop; see https://digital-photography-school.com …lighting-using-photoshop/.

Another resource is at https://www.photoshope​ssentials.com/photo-effects/window-blinds/.

Two different light sources, the background lit going through staged/mounted slats

john crossley wrote in post #19258111
Personally I think that the diagonal stripes are Photoshopped. If the stripes were created using lights, then surely the models body would cast a shadow on the wall behind her.

I would agree that the stripes are likely Photoshopped. Shadows exist at the feet of the models but nothing on the wall from the head or shoulders. In addition the diagonal stripes that exist on the model are lower than the “equivalent” on the wall, tending to indicate a low light source or photoshopping.

Both lights are casting shadows at an angle that won't put the model onto the backdrop. Very easy, and easier to do than to photoshop a bunch of modeling shots later, making sure the shadows on the model are offset from the ones in the distance, etc. They make gobos and cucolorises for this.

Something simply 'is not right' if you assume the ligthing is created entirely on set by photographer.

1. The light source which casts models shadow to model's right does NOT exhibit highlights along the left side of her jeans where the 'shadow area falls evenly across the entire visible front, and not mimicing the highlighting created by the side light
   
2. The shadow pattern (in her beige outfit, and again in her jeans+top) leg are offset by about 15mm downward (measured on my screen) while the double thin shadow is offset 25mm downward, but the broad shadow above her head is NOT appearing offset downward across her form at all.
   
3. The double thin shadows (in her shot in jeans) falls across he upper forearm, but NOT also across her upper hand (although the double thin shadow is apparent across her heans and lower portion of her top)
   

I agree the stripes are photoshop'ed for the reasons already given and, furthermore, are inconsistent from image #1 to #2. Tacky. The motion blur in #2 indicates continuous lighting, and the hardness suggests direct sunlight. Fill is simply ambient from a white shooting space.

john crossley wrote in post #19258207
Well, now knowing were the OP appropriated the images from, and having watched the video at the bottom of the page, I don't think the images are photoshopped.

https://namratajoshipu​ra.com

Regardless of the true source of images...Stripes on the background are seen on the body offset by 15-20mm downward (measured on my monitor), EXCEPT for the broad stripe up above model's head...where is that broad stripe on her body?!...it ought to be appearing somewhere about her head!
I suspect the background may be a back projection on a translucent background, and the 3 stripes that do fall across the model's body were placed there with Photoshop but they omitted the top one as it would have been inconveniently positioned across part of her face.

Wilt wrote in post #19258208
Regardless of the true source of images...Stripes on the background are seen on the body offset by 15-20mm downward (measured on my monitor), EXCEPT for the broad stripe up above model's head...where is that broad stripe on her body?!...it ought to be appearing somewhere about her head!

Probably just missing them, or in their dark hair, as I see two models.

I initially was thinking a large room with a skylight, but the shadows in the rest of the images in the source haven't moved. If it were sun light, the shadows would have changed angle during the time all of the images were shot.

john crossley wrote in post #19258207
Well, now knowing were the OP appropriated the images from, and having watched the video at the bottom of the page, I don't think the images are photoshopped.

https://namratajoshipu​ra.com

In the video segment from the original web page, I do see the two narrow stripes appearing across the models' bodies as they move, so not Photoshopped after all, but projected. In fact, during some of the video you can see the shadow of the model cast onto the background surface when she is close to that surface. But that still leaves the question ,'Where is that broad stripe up that falls on the b/g above their head?"

Wilt wrote in post #19258218
In the video segment from the original web page, I do see the two narrow stripes appearing across the models' bodies as they move, so not Photoshopped after all, but projected. In fact, during some of the video you can see the shadow of the model cast onto the background surface when she is close to that surface. But that still leaves the question ,'Where is that broad stripe up that falls on the b/g above their head?"

Probably in their dark hair or just missing their head? I suspect you didn't include parallax in your measurements.

Wilt wrote in post #19258218
In the video segment from the original web page, I do see the two narrow stripes appearing across the models' bodies as they move, so not Photoshopped after all, but projected. In fact, during some of the video you can see the shadow of the model cast onto the background surface when she is close to that surface. But that still leaves the question ,'Where is that broad stripe up that falls on the b/g above their head?"

I retract my statement about shadows across the body put there by Photoshop, based upon seen the video segment. Also, retract statement about back projection, as the stripes clearly fall in varying positions as the models move during the video.
Here is a still captured from the video, showing the model's hand projected onto the background