Fabrication and Verification of a Small-Form-Factor Blue-Light Optical Pickup Head With Holographic Optical Element

Prism-type holographic optical element design and verification for the blue-light small-form-factor optical pickup head

“…Figure 13 is the assembled module that integrated all components except the objective lens. Based on previous reports [20][21][22][23], we believe that the module will generate servo signals if an objective lens is put on.…”

“…Based on the design configuration, there have been a series of studies presented to fulfill and strengthen its feasibility, such as the micro blue-light objective lens with the numerical aperture (NA) of 0.65 [12], the dual-stage seesaw-swivel actuator [13][14][15][16], the astigmatic reflector [17], and the fabrication using microelectromechanical systems (MEMS) technologies [18,19]. The servo characteristics of the design have been successfully verified by Hou et al [20][21][22] for the red-light system and by Lin et al [23] for the blue-light system, respectively.…”

Fabrication of polymer compound microlens by lens-on-lens microstructures

“…The topsmall lensdiameter of PCML can be controlled by adjusting the solidification temperature and curing time. The fabricated PCMLs array can also be fabricated with potential applications in optical storage [15,16], extended depth of focus of a laser beam [17], real-time detection of the unconfined or fluctuating targets [18].…”