Type-based Cancer Photodynamic Therapy segmentation distinguishes photosensitiser generations and light-delivery modalities, each commanding discrete cost, reimbursement, and adoption curves. First-generation porphyrins (e.g., Photofrin) retain residual share (~12 %) owing to historical head-and-neck approvals, despite prolonged skin photosensitivity and complex dosing. Second-generation chlorins and benzoporphyrins (e.g., temoporfin) deliver deeper tissue penetration and shorter drug-light intervals, collectively holding the largest revenue slice at 58 %, driven by solid-tumour protocols across Europe and Asia. Third-generation nanoparticle or antibody-conjugated agents, still largely in Phase II, claim a 7 % early-access premium but are expected to outpace other subclasses through targeted accumulation and reduced off-target toxicity. Parallel light-source segmentation shows diode lasers dominating hospital procurement (63 % of device sales) because of fibre-coupled versatility, while filtered lamps and LED patches serve superficial lesion clinics, together accounting for the remainder. Price per patient cycle varies two-fold across these cohorts, underpinning procurement negotiations and manufacturer margin strategy.