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LBT-HW-703 Mask Visual Field Tester

Manufactured in accordance with relevant standards, it is primarily used for visual field testing of masks, face shields, respirators, and similar products. It is suitable for mask and respirator manufacturers, quality‑control agencies, research institutions, and organizations involved in the use and fitting of such protective equipment.

Category:

Mask testing instrument

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E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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Description

Product Introduction:

Product Features:

1. The complete system comprises a test spherical screen, a recording device, a mounting bracket, and a test head dummy, among other components.

2. Spherical screen for testing: with a radius of 300–305 mm, it features scale markings every 10° extending up to 120°. The spherical screen is pre‑marked, eliminating the need for customers to perform complex and time‑consuming line‑drawing. Visual field testing can be directly projected onto the screen, allowing users to visually assess whether the field of view meets the required specifications.

3. Recording device: The recording needle, connected to the visual target via components such as an axle and pulley, records the target’s position and angle onto the visual field chart.

4. Mounting Frame: Used to support the spherical screen arch and secure the recording device.

5. Test headform: One standard headform, with small light bulbs installed in the two eye sockets; the bulb positions and the headform’s placement shall comply with the requirements of GB 2890. The test headform shall be mounted on the workbench such that each eye is aligned with the center of the spherical test screen and directly faces its “0” point.

6. The lower visual field can be tested directly; testing the binocular visual field and the full visual field requires an area‑measuring instrument (to be provided by the customer).

Applicable Standard:

GB/T 32610, GB 2626.

Technical Specifications:

1. Test spherical screen: radius 300–305 mm.

2. Binocular visual field: ≤120°.

3. Bulb distance: The line connecting the bulb’s apexes is positioned (7 ± 0.5) behind the midpoint between the two eyes.

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

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What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Keywords:

LBT-HW-703 Mask Visual Field Tester

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Committed to becoming a leader in China's testing equipment manufacturing industry

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Mobile:+86-15102211717

Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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