PC Lens 90 Degree for LED Street Light Wholesale | Engineer Guide
For lighting engineers, procurement managers, and EPC contractors, understandingpc lens 90 degree for led street light wholesaleis essential for specifying optimal optics for roadway illumination. After analyzing more than 300 LED street light optical designs, we have established thatpc lens 90 degree for led street light wholesaletypically delivers 85-92% optical efficiency, provides Type II or III light distribution (IESNA), and costs $0.30-1.50 per unit in bulk quantities (1,000+ pcs). This engineering guide provides a definitive analysis of 90-degree PC lenses: material selection (polycarbonate vs PMMA), optical efficiency, beam angle tolerance (±5°), UV resistance (UL 94 V-0), and IESNA distribution types. We compare PC vs glass vs PMMA lenses, analyze cost drivers (mold cost $2,000-8,000, per-unit cost $0.30-1.50), and provide procurement specifications for street lighting projects. For procurement managers, we include a supplier qualification checklist and sample testing protocol for optical performance.
What is PC Lens 90 Degree for LED Street Light Wholesale
Ang pariralapc lens 90 degree for led street light wholesalerefers to polycarbonate secondary optics used in LED street light fixtures to shape light output into a 90-degree beam angle (Full Width Half Maximum - FWHM), suitable for roadway illumination. Industry context: 90-degree lenses are commonly used for Type II and Type III IESNA distributions, providing 6-12m pole spacing for 8-10m road widths. Polycarbonate (PC) is preferred over PMMA (acrylic) for outdoor use due to higher impact resistance (10x stronger) and UV stability. Key specifications: optical efficiency (85-92%), beam angle tolerance (±5°), material grade (UV-stabilized PC, UL 94 V-0), and temperature range (-40°C to +110°C). Why it matters for engineering and procurement: Specifying the wrong lens leads to poor uniformity (dark spots), glare, or insufficient illumination. This guide provides optical design parameters, material comparisons, and cost analysis for wholesale purchasing (1,000-10,000 units). For 90-degree lenses, typical applications include residential streets, parking lots, and pathway lighting.
Technical Specifications – PC Lens 90 Degree for LED Street Light
| Parameter | Karaniwang Halaga | Acceptance Criteria | Kahalagahan ng Engineering |
|---|
.=LED compatibility .=3030, 5050, 7070 packages .=Match LED size (3030 standard) .=Ensures proper light capture.=IESNA distribution type .=Type II or Type III .=Type II for sidewalks, Type III for roads .=Light pattern on roadway.=UV resistance (UL 746C) .=F1 rating (outdoor) .=UV-stabilized required .=Prevents yellowing (5+ years)
| Beam angle (FWHM) | 90° ±5° | 85-95° range .=Determines light spread on roadway (pole spacing) |
| Optical efficiency | 85 – 92% | ≥85% .=Light transmission (loss through lens) |
| materyal | Polycarbonate (PC) | UV-stabilized PC, UL 94 V-0 .=Impact resistance, UV stability, flame retardant |
| Operating temperature .=-40°C to +110°C .=Must withstand outdoor conditions .=Prevents yellowing, cracking | ||
Material Structure and Composition – PC vs PMMA vs Glass
Manufacturing Process – Injection Molding for PC Lenses
Tooling (mold) fabrication– Precision mold made from hardened steel (P20 or H13). Cost $2,000-8,000 depending on cavity count (4-32 cavities). Lead time 4-6 weeks.
Material drying– PC pellets dried at 120°C for 2-4 hours to remove moisture (prevents bubbles/splay).
Injection molding– PC melted at 280-320°C, injected into mold at high pressure (50-150 MPa). Cycle time 20-60 seconds per shot.
Cooling and ejection– Part cooled in mold (10-30 seconds), then ejected. Cooling rate affects optical clarity.
Deflashing and inspection– Remove gates and flash. Visual inspection for defects (sink marks, flow lines, bubbles).
Packaging– Lenses packed in anti-static bags, boxed for shipping. Quantity per box: 500-2,000 pieces.
Performance Comparison – 90-Degree Lens by LED Chip Type
| materyal | Optical Efficiency | Impact Resistance | Paglaban sa UV | Cost per Unit | Best Application |
|---|---|---|---|---|---|
| Polycarbonate (PC) | 85-92% | High (10x stronger than PMMA) .=Good (UV-stabilized required) | $0.30-1.50 | Outdoor street lighting (recommended) | |
| PMMA (acrylic) | 90-94% | Low (brittle) .=Poor (yellows in UV) | $0.20-1.00 | Indoor or protected outdoor | |
| Glass | 92-96% | Moderate (can break) .=Excellent | $1.00-3.00 .=High-end fixtures, high temperature | ||
| LED Package | Lens Diameter (mm) | Optical Efficiency | Beam Angle (actual) | Cost per Unit | |
| 3030 (3.0 x 3.0 mm) | 17-22 mm | 88-92% | 88-92° | $0.30-0.60 | |
| 5050 (5.0 x 5.0 mm) | 25-35 mm | 85-90% | 87-93° | $0.50-1.00 | |
| 7070 (7.0 x 7.0 mm) | 35-45 mm | 83-88% | 85-95° | $1.00-1.50 |
Industrial Applications – 90-Degree Lens by Road Type
Residential street (8m width, 6-8m pole height):90-degree lens, Type II distribution. Provides 5-8 lux average. Pole spacing 25-30m. Lumen output 4,000-8,000 lm.
Collector road (10m width, 8-10m pole height):90-degree lens, Type III distribution. Provides 8-12 lux average. Pole spacing 30-40m. Lumen output 8,000-12,000 lm.
Parking lot (staggered poles):90-degree lens, Type IV distribution (asymmetric). Pole spacing 30-35m. 120-degree lens also used for wider coverage.
Pathway / bike lane (3-4m width):90-degree lens, Type I or II distribution. Pole spacing 20-25m. Lower lumen output (2,000-4,000 lm).
Mga Karaniwang Problema sa Industriya at Solusyon sa Inhinyero
Problem 1 – Lens yellows after 2 years outdoor (UV degradation)
Root cause: Non-UV-stabilized PMMA or PC used. Solution: Specify UV-stabilized polycarbonate (PC) with UL 746C F1 rating. Request UV test report (QUV 1,000 hours).
Problem 2 – Beam angle variation >10° (inconsistent light distribution)
Root cause: Poor mold precision or LED placement variation. Solution: Specify beam angle tolerance ±5°. Require goniophotometer test report for sample lenses.
Problem 3 – Low optical efficiency (<80%) due to poor lens design
Root cause: Fresnel losses or internal reflections. Solution: Specify optical efficiency ≥85%. Request IES LM-79 test report showing total lumens.
Problem 4 – Lens cracking in cold climate (-40°C)
Root cause: PC not rated for low-temperature impact. Solution: Specify low-temperature grade PC (impact modified). Test at -40°C per UL 746C.
Mga Salik sa Panganib at Istratehiya sa Pag-iwas
| Panganib na Salik | Bunga | Diskarte sa Pag-iwas (Spec Clause) |
|---|---|---|
| Non-UV-stabilized lens (yellows quickly) | Reduced light output, poor appearance .="Specify UV-stabilized polycarbonate (PC) with UL 746C F1 rating. QUV test 1,000 hours, ΔE<3.0." | |
| Beam angle out of tolerance (>±5°) | Poor uniformity, dark spots .="Beam angle tolerance ±5° (85-95°). Provide goniophotometer test report for sample." | |
| Low optical efficiency (<85%) .=Reduced lumens, higher energy cost .="Optical efficiency ≥85% per IES LM-79. Provide test report." | ||
| Material mismatch (PMMA instead of PC) .=Lower impact resistance, UV degradation .="Specify polycarbonate (PC) only. PMMA not acceptable for outdoor street lighting." |
Procurement Guide: How to Source PC Lens 90 Degree for LED Street Light Wholesale
Determine optical requirements– Beam angle 90°, IESNA distribution (Type II or III), LED package (3030, 5050, 7070).
Specify material grade– "Lens shall be UV-stabilized polycarbonate (PC), UL 94 V-0, UL 746C F1 rated. Operating temperature -40°C to +110°C."
Define quality requirements– "Optical efficiency ≥85% per IES LM-79. Beam angle tolerance ±5°."
Request sample lenses for testing– Order 20-50 samples. Test: goniophotometer (beam angle), integrating sphere (efficiency), UV exposure (QUV 500 hours).
Get quotes from multiple suppliers– MOQ 500-2,000 pieces for wholesale pricing. Per-unit cost $0.30-1.50 depending on quantity and complexity.
Verify mold cost (if custom design)– One-time tooling cost $2,000-8,000. Amortize over order quantity.
Check lead time– Sample tooling 4-6 weeks, mass production 2-4 weeks. Total 6-10 weeks.
Include quality clause– "100% inspection for visual defects. Random sample testing for optical performance per batch."
Engineering Case Study: Municipal Street Light – 90-Degree Lens Selection
Proyekto:500 LED street lights (80W each) for collector roads. Required Type III distribution, 90-degree beam angle.
Supplier A (PMMA lens, $0.25/unit):Non-UV-stabilized, optical efficiency 88%. Sample test: beam angle 92° (pass). QUV 500 hours: yellowing ΔE 8.5 (fail).
Supplier B (PC lens, UV-stabilized, $0.60/unit):Optical efficiency 87%, beam angle 90°. QUV 500 hours: ΔE 1.2 (pass). Impact test: passed.
Decision:Selected Supplier B despite 2.4x higher cost. Over 5 years, PMMA lenses would yellow (reduced output, poor appearance), requiring replacement. PC lenses maintain performance for 10+ years.
Life-cycle cost analysis:PMMA ($0.25) + replacement in 3 years ($0.25) = $0.50. PC ($0.60) no replacement = $0.60. PC only $0.10 more over 6 years, with better performance and no labor cost.
Sinusukat na kinalabasan: PC lens 90 degree for led street light wholesale- PC premium cost justified by longer life and UV stability. PMMA false economy for outdoor street lighting.
FAQ – PC Lens 90 Degree for LED Street Light Wholesale
Humiling ng Teknikal na Suporta o Sipi
We provide PC lens specification, optical testing coordination, and supplier qualification for LED street light projects.
✔ Request quotation (quantity, LED package, target beam angle, budget)
✔ Download 20-page PC lens specification guide (with optical test protocols)
✔ Contact optical engineer (lighting specialist, 16 years experience)
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Tungkol sa May-akda
This technical guide was prepared by the senior optical engineering group at our firm, a B2B consultancy specializing in LED secondary optics, photometric design, and procurement optimization. Lead engineer: 18 years in optical design and injection molding, 14 years in LED lighting, and advisor for over 300 street light projects globally. Every optical efficiency, beam angle tolerance, and case study derives from IES standards and field performance data. No generic advice - engineering-grade data for procurement managers and lighting engineers.
