TO Window

Jianxin Optoelectronics has independently developed advanced packaging processes and can provide high-quality customization of wavelength, liquid-crystal cell thickness, device dimensions, device operating mode, and liquid-crystal materials to specific customer requirements. Customer case: the School of Electronics and Information Engineering at Anhui University published the paper "Switching Dynamics Mechanism of Liquid-Crystal Cells under High-Frequency Pulse Driving," DOI: 10.37188/CJLCD.2025-0168. Abstract: High-resolution liquid-crystal spatial light modulators driven by high-frequency pulses are widely used in holographic imaging, near-eye AR/VR, and optical communications. However, insufficiently fast liquid-crystal cell response and output jitter remain technical problems requiring solutions. Existing studies mainly focus on static or slowly varying low-frequency electric fields, and the complex relationship between high-frequency pulse driving and switching dynamics remains unclear. Based on the Ericksen-Leslie dynamic theory for nematic liquid crystals, this paper discusses and simulates characteristic curves of the equations under inertia-dominated or viscosity-dominated conditions. Based on this discussion, a parallel-aligned liquid-crystal cell with a cell thickness of approximately 1 μm is driven by rectangular pulses at 1~10 kHz, and the relaxation process is observed using light intensity measurements. The results show that, after the driving field is switched off, relaxation of the nematic liquid-crystal deformation is jointly governed by inertial and viscous properties. Based on this finding, the paper considers that this model can explain liquid-crystal cell switching dynamics more precisely and will help optimize liquid-crystal spatial light modulator designs. The authors also hope the work will encourage further investigation of liquid-crystal cell switching dynamics under high-frequency pulse driving. Keywords: liquid-crystal spatial light modulator; high-frequency pulse driving; Ericksen-Leslie dynamic theory; director switching dynamics; inertial and viscous effects.

Input emitter maximum power Pd [Absolute Maximum Ratings ;Ta=25℃]: 75 mW Input emitter maximum reverse voltage V_R [Absolute Maximum Ratings ;Ta=25℃]: 5 V Input emitter maximum continuous forward current I_F [Absolute Maximum Ratings ;Ta=25℃]: 50 mA

ZOS-R4023-20 is a compact reflective photointerrupter with phototransistor output. The emitter and detector face the same direction in a molded package for noncontact sensing. The compact package series combines transfer and injection molding using unique technology and blocks visible light to reduce false detection. The device has a long focal length and a lead-free (T&R) package suitable for reflow soldering. Measurement notes: forward-voltage measurement tolerance ±0.1V; luminous-intensity measurement tolerance ±10%; peak-wavelength measurement tolerance ±1.0nm.

Maximum Power P_C [Absolute Maximum Ratings ;Ta=25℃]: 150 mW Reverse Voltage V_R [Absolute Maximum Ratings ;Ta=25℃]: 32 V Operating Temperature Topr [Absolute Maximum Ratings ;Ta=25℃]: -40~+85 ℃

ZALS-4439C-12B120-Z1(CAR) is a high-speed, high-sensitivity miniature flat-top PIN photodiode in a lens surface-mount package molded from clear plastic. The source's incomplete spectral statement refers to visible-light and infrared emitting diodes.

Maximum Power Power Dissipation Pd [Absolute Maximum Ratings;Ta=25℃;First Maximum Power Row in Source Table]: 140 mW Maximum Reverse Voltage VR [Absolute Maximum Ratings ;Ta=25℃]: 5 V Maximum Continuous Forward Current IF [Absolute Maximum Ratings ;Ta=25℃]: 100 mA

Package dimensions. Notes: all dimensions are in millimeters; unspecified dimensional tolerances are±0.3mm. Electro-optical characteristics. Absolute maximum ratings.