Smartphone Lens Adapter Consultation

I'm seeking expert advice on designing a smartphone lens adapter specifically for depth of field enhancement. This will help me achieve beautiful blurry background effects for my photography and videography projects.

Key requirements:
- Purpose: Depth of field adapter
- Primary use: Photography/videography
- Desired effect: Blurry background effects

Ideal skills and experience:
- Expertise in lens design and optical physics
- Experience with smartphone photography/videography
- Knowledge of depth of field and background blur techniques
- Ability to provide practical, implementable design solutions

I'm looking for a detailed consultation that can guide me through the design process and help me achieve my creative vision.