Trial Lens Set(232Pcs Lenses)

Place of Origin:
China

Brand Name:
OEM

Model Number:
TLS-232

Product name:
Trial Lens Set TLS-232

Application:
Optical Shops

Material:
plastic rim, aluminum case

Sphere:
68 pairs

Cylinder:
38 pairs

Prism:
10 pieces

Accessories:
10 pieces

A trial lens set, also known as a trial lens kit or trial frame set, is a collection of lenses used by optometrists and ophthalmologists during eye examinations to determine a patient's prescription for corrective lenses, such as glasses or contact lenses. These sets typically contain a variety of lenses with different optical powers and specifications, allowing the eye care professional to conduct a comprehensive refraction test and find the most suitable prescription for the patient. Lens Types: Trial lens sets typically include spherical lenses, cylindrical lenses, and prism lenses. Spherical lenses correct for nearsightedness (myopia) or farsightedness (hyperopia), while cylindrical lenses correct for astigmatism. Prism lenses are used to correct alignment and binocular vision issues.
Lens Powers: The lenses in a trial lens set come in a range of powers, usually measured in diopters (D), which indicate the strength of the lens. Positive (+) powers are used to correct hyperopia, while negative (-) powers correct myopia. Cylinder lenses also have a cylindrical power component to correct astigmatism.
Lens Diameter and Thickness: Trial lenses come in various diameters and thicknesses. Thicker lenses may have higher powers or prisms, while smaller diameters are used for more precise testing.
Lens Material: Trial lenses are typically made of high-quality optical glass or plastic materials that provide accurate refractive properties and durability.
Mounting System: Trial lenses are often mounted in metal or plastic rims that fit into a trial frame. The trial frame allows the eye care professional to hold and position the lenses in front of the patient's eyes during the refraction test.
Accessories: Some trial lens sets may include additional accessories, such as lens holders, lens cleaning tools, and a carrying case for convenient storage and transportation.
During a refraction test, the eye care professional uses the trial lens set along with a phoropter or trial frame to present different lens combinations to the patient and determine the best prescription for optimal vision correction.

Standard form lenses are mounted in moulded ABS rims having the power printed at two different places for easy identification. The rims are colour coded and you can either have the Cylindrical lenses with or without handles.

Composition:
Spheres 32 pairs each of Plus and Minus
Cylinders 20 pairs each of Plus and Minus
Prism 6 Pcs.
Accs. 6 Pcs.
Trial Set "PN" is supplied with the lenses fitted in wooden tray and flat top Wooden Carrying Case.

Accurate 24.0 mm diameter lenses of Meniscus or standard form with light weight aluminium rims of 38.0mm. All rims are engraved with power in two places for easy identity.
Composition
Spheres 32 pairs each of Plus and Minus
Cylinders 19 pairs each of Plus and Minus
Prism 10 Pcs.
Accs. 7 Pcs.
Beta 25H Meniscus is supplied with Meniscus corrected curve lenses, fitted in wooden tray.
Beta 25H "R" is supplied with standard form lenses, ABS moulded tray in Leatherette Carrying Case.

Properties
1. Excellent transparency, outstanding resistance to aging.

2. It has good insulating properties and mechanical strength; to acid, alkali, salt has a strong resistance to corrosion; and because easy processing.

Applications
1.Extruded sheets for signage, displays and building material

2.Motive parts such as tail lamps, meter covers and sun visors

3.General sundries such as tableware, kitchenware, giftware and bathroom accessories

4.Optical lenses such as sunglasses, reading glasses and camera lenses

5.Light guide panels for LCD displays

6.Other applications such as mobile phone display panels, clock covers, lighting covers/accessories, optical fibres, toys, etc.

Properties
1. Excellent transparency, outstanding resistance to aging.

2. It has good insulating properties and mechanical strength; to acid, alkali, salt has a strong resistance to corrosion; and because easy processing.

Applications
1.Extruded sheets for signage, displays and building material

2.Motive parts such as tail lamps, meter covers and sun visors

3.General sundries such as tableware, kitchenware, giftware and bathroom accessories

4.Optical lenses such as sunglasses, reading glasses and camera lenses

5.Light guide panels for LCD displays

6.Other applications such as mobile phone display panels, clock covers, lighting covers/accessories, optical fibres, toys, etc.

Micro Spherical Lenses
Under the condition of high refractive index, some optical components can achieve short focal length. Therefore, the micro lens becomes an ideal choice in the field of high precision applications.
Through years of accumulated processing know-how technologies and production capacity, high standard thin film coating performance and strict testing requirements, Photonchina provides customers with one of the world's smallest but excellent micro lenses products, which have been widely used in various medical devices (endoscope lens, for example), precision surveying and optical communications instruments.
From design, manufacturing to optical coating, from endoscope lens, capsule lens to special-required rod lens, from single mini lens to glued lenses system, engineers in Photonchina implement strict production process to ensure stable quality, competitive price as well as responsive lead time.
A variety of optical glass or other materials, such as BK7, N-SF11, H-LAF76, Fused Silica and so on are available for customers design. H-LaF53, for instance, has often been used in endoscope lens or capsule lens production. We have a wide range of lenses in shape: convex, concave, biconvex, meniscus etc.


Material : N-SF11H-LaF53H-LaF76
Fused Silicon etc.
Radius of Curvaturemm R0.25R
Diametermm 0.5 5 Tolerancemm 0.005 0.05
Lengthmm L0.5 L30 Tolerancemm 0.020.06
Thickness tolerancemm 0.01 0.1 Surface Quality 10/580/50
Flaness /20/4 Off centering 110
Optical coating : Upon request

Lens of cr-39
Uncoat /hc /tintable hc/ hmc/ emi / uv400
Diameter:55/60/65/70/75mm
Finished&semi-finished for polarized, lenticular, progressive lens.
Sunlens, aspheric,
Raw material: ppg, great lake, ts-46,

Cartons

Photonchina produces the smallest rod lenses for customers at home and abroad.
Micro rod lenses: 0.5-1.8mm diameter, 1.0-25mm length, with one end of designated curvature radius and another end of arbitrary angle.
Both ends of arbitrary radii or angle are also available. Highly customized products for a wide range of applications from medical device, fiber communications, optical display and surveying equipment.
What is more, we can provide unique rod-shaped glued lenses by combining special gluing/cementing technics and edging skill. These glued/cemented rod lenses subassembly can be made of up to four single micro rod lenses with various combination. Rod lens assembly systems are able to provide images with greater brightness, contrast and color reproduction than conventional lenses.
Rigid endoscope, for instance, which usually has a series of high-resolution optical glass rod lenses, can be forward viewing (0 degrees) or angled (10120 degrees) to allow visualization out of the axis of the telescope and increase the FOV by rotating the instrument. The optical quality of lens-generated images of rigid endoscopes still surpasses that of the fiber-optic or digital images produced by flexible scopes.
High performance optical coatings for rod lenses are provided.
Optical glass material NBK7, N-SF11 from Schott, Corning 7980 etc, are all available.

Material : N-SF11H-LaF53H-LaF76
Fused Silicon etc.
Radius of Curvaturemm R0.25R
Diametermm 0.5 5 Tolerancemm 0.005 0.05
Lengthmm L0.5 L30 Tolerancemm 0.020.06
Thickness tolerancemm 0.01 0.1 Surface Quality 10/580/50
Flaness /20/4 Off centering 110
Optical coating : Upon request