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Patent Information & Production OptionsAdjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl · Patent CN110762407B

Patent CN110762407B: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

At a glance

Patent numberCN110762407B (application CN201911094148)
TypeChina invention patent (发明专利) - protects product shape, structure and method
Original titleAdjustable focus lighting based on condensing bowl curvature adjustment (基于聚光碗曲率调节的可调焦式照明灯)
Patent ownerUniversity of Shanghai for Science and Technology
InventorsShi Keyu, Lei Huaze, Ou You, Ge Ben’an
Filing date2019-11-11
Grant date2021-08-13
Status (China)Lapsed - terminated for non-payment of annual fees (recorded 2024-11-08)
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by0 later documents
SourceGoogle Patents (search for CN110762407B)

What the claims cover, in plain language

Claim 1 - an adjustable focus lighting lamp comprising a lamp shade, rear cover, lithium battery, lamp stand, lamp bead, power switch, upper lamp cylinder, lower lamp cylinder, elastically deformable light-gathering bowl, lead screw and focusing disc. The upper and lower cylinders connect by threads. The upper cylinder has a long side hole. The lead screw is fixed vertically at the center of the lamp stand’s bottom surface. Sliding grooves run along the inner wall of the upper cylinder, and protrusions on the lamp stand sit in those grooves. The focusing disc screws onto the lead screw and aligns with the side hole. The lamp bead is at the center of the lamp stand’s top surface. The bottom of the elastic bowl connects to the lamp stand with the lamp bead at its center, and the bowl’s top surface has a flanging. The lamp shade threads onto the upper cylinder, clamping the flanging. The rear cover threads onto the lower cylinder. The lithium battery inside the lower cylinder connects to the lamp bead via the power switch.

Claim 2 - the elastic bowl is made of elastic reflective cloth. Claim 3 - a partition plate sits below the lamp stand inside the upper cylinder; the focusing disc is between the partition plate and the lower cylinder’s top surface; the lead screw passes through both. Claim 4 - circular guide grooves on the partition plate and lower cylinder top surface mate with circular convex ridges on the focusing disc to guide its rotation. Claim 5 onward - further details including the grid pattern on the focusing disc, the hollow lead screw for wiring, the arc-shaped inclined plane around the side hole, vent holes in the lower cylinder, and power management components.

This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.

What this means for US production

This patent was filed only in China and is lapsed (terminated for non-payment of annual fees, recorded 2024-11-08), so it no longer restricts anyone in China either. It has no US or other foreign counterpart.

Two points to settle early:

  • Other patents may exist. Portable flashlights with adjustable beam patterns are covered by numerous active US and international patents held by major lighting manufacturers, so a freedom-to-operate (FTO) review of the elastic reflector deformation mechanism and the lead-screw adjustment method is needed before tooling.
  • Elastic reflector material. The patent specifies elastic reflective cloth; sourcing a material that maintains reflectivity after repeated stretching cycles requires prototype testing to confirm durability and light output.

Customization and manufacturing

What can be customized

AreaOptions
Body dimensionsOverall length and diameter to be confirmed in design
Battery capacityLithium cell size and capacity set in design to match target run time
LED moduleLamp bead type, color temperature and power selected per application
Reflector materialElastic reflective cloth grade and coating chosen for stretch life
Housing finishAnodizing, paint or rubberized overmold on the aluminum or plastic cylinders
ControlsPower switch type, addition of brightness adjusting knob or charging indicator
ChargingCharging port type (e.g., USB-C) and power management module configuration

Things to plan for (US market)

  • UL 1598 / UL 8750 - safety standards covering portable luminaires and LED equipment; required by many US retailers.
  • UN 38.3 - transport testing mandatory for the lithium battery before shipping finished goods internationally.
  • FCC Part 15 - applies if the power management module or charging circuit contains digital oscillators above 9 kHz.
  • California Prop 65 - materials in the housing, reflector cloth and battery must be screened for listed substances.
  • DOE energy conservation - battery chargers sold in the US must meet applicable Department of Energy efficiency standards.

How a project runs

  1. Inquiry - target beam range, battery life, dimensions and quantity.
  2. Design - CAD modeling of the cylinders, lead screw pitch, sliding groove geometry and reflector clamping ring.
  3. Prototype - 3D-printed or machined samples to test the focusing disc feel, cloth stretch range and thermal performance of the lamp bead.
  4. Pilot run - injection molding or CNC machining of pre-production units; cycle testing of the elastic reflector.
  5. Production - mass molding, metal finishing, reflector cutting, PCB assembly, battery installation and final QC.

Quantities & timeline

The upper and lower cylinders require injection molds or extrusion dies depending on material choice, the focusing disc and partition plate need precision molds, and the elastic reflective cloth must be die-cut to the correct profile. Certification tests for the lithium battery and electrical safety add to the schedule. Send us your target beam specifications, preferred materials, estimated order quantity and launch timeline and we will reply with options.

Patent drawings

Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 1
Fig. 1 - Cross-sectional view of the lighting lamp.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 2
Fig. 2 - Exploded perspective view of the lighting lamp.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 3
Fig. 3 - Detailed view of the focusing mechanism.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 4
Fig. 4 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 5
Fig. 5 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 6
Fig. 6 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 7
Fig. 7 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 8
Fig. 8 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 9
Fig. 9 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 10
Fig. 10 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 11
Fig. 11 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 12
Fig. 12 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 13
Fig. 13 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 14
Fig. 14 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 15
Fig. 15 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 16
Fig. 16 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 17
Fig. 17 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 18
Fig. 18 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 19
Fig. 19 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 20
Fig. 20 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 21
Fig. 21 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 22
Fig. 22 - Structural view of a component.
Adjustable Focus Flashlight with Elastic Reflective Light-Gathering Bowl - Patent Fig. 23
Fig. 23 - Structural view of a component.

Drawings reproduced from the public patent document for reference.

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This page is based on the public patent document CN110762407B, assigned to University of Shanghai for Science and Technology. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.