Poly Materials

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

Optical Poly Materials of Fresnel Factory Inc.

This document describes the optical characteristics of Polymers of Fresnel Factory, such as the transmittance by wavelength band, tensile strength and etc. To choose a right material and production methods are essential to achieve proper optical property. If you need assistance please feel free to contact, ashton@fresnelfactory.com. Fresnel Factory Inc. also support design for optics and tooling as your requirements.

The table below summarizes the characteristics of the materials mentioned in this document. The table does not include PMMA used for casting, PET flim+UV resin used for roll-to-roll, and PMMA film used for hot-embossing. Also Fresnel Factory has all the general optical materials in addition to the materials mentioned above.

 

Material

Main

Main Wavelength

Tensile

*Impact

*Hardness

*HDT

 

 

(Rockwell

Properties

 

Name

Wavelength

Transmittance

Strength

Strength

(0.46Mpa)

 

Scale)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly visible

 

92.65%

66Mpa

16J/m

90(M Scale)

82℃

UV cut

 

(UV cut)

 

 

Visible

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly visible

92.06%

-

-

-

-

UV transmission

 

 

 

 

 

 

 

 

 

 

 

 

Poly PVC

 

89.16%

-

-

-

-

Thin, Flexible

 

 

 

 

 

 

 

 

 

 

Poly NIR212

Near Infrared

91.46%

62Mpa

694J/m

70(M Scale)

137℃

High strength

 

High HDT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly FIR 200

Far Infrared

42.81%

24.5Mpa

30.15J/m

-

73℃

High

 

Transmittance

 

 

(8~13um)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly FIR 25

19.24%

26Mpa

70J/m

75 (R Scale)

93℃

High HDT

 

 

 

 

 

 

 

 

 

 

 

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

1.Material for visible(400~750nm) light

<![if ! IE]>

<![endif]>Transmittance (%)

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0

200

225

250

275

300

325

350

375

400

425

450

475

500

525

550

575

600

625

650

675

700

725

750

775

800

Wavelength (nm)

Poly visible (UV cut)

Poly visible

Poly PVC

Fresnel Factory has 3 different material for visible light. Two PMMA based material, which is Poly visible(UV cut) and Poly visible, and one PVC based, which is Poly PVC. Poly visible(UV cut) is also used for Near Infrared depend on purpose.

Reference

*HDT(Heat Deflection Temperature) : It exhibits heat resistance at a specific temperature when the sample has displacement of 2.5mm under a specific load.

*Hardness : Abrasion resistance

*Izod Impact strength : Impact resistance

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

1-1) Poly visible(UV cut) and Poly visible

(F=2mm to F=2,000mm circle Fresnel lense)

Transmittance (%)

Material name

UVB(280~315nm)

UVA(315~400nm)

Visible(400~750nm)

 

 

 

 

Poly visible(UV cut)

6.3%

31.04%

92.65%

 

 

 

 

Poly visible

84.05%

92.65%

92.06%

 

 

 

 

FresnelFactory has Poly visible (UV cut) and Poly visible. Poly visible series is mainly produced by using hot-press(precise heat compression mold) using a pre-formed sheet with a thickness from 1mm to 5mm. This materials are using for Circle Fresnel, cylindrical Fresnel, LED lights, CPV and Large, some of MLA and Lenticular, and wide angle mirror.

Properties

Max Tensile

Impact

Hardness

HDT(0.45Map)

Melt Flow rate(230/3.8kg)

strength

strengh

 

 

 

 

 

 

 

 

66Mpa

16J/m

Rockwell M sale 90

82℃

14g/10min

 

 

 

 

 

PMMA has the best visible light transmittance and weather resistance among resins. It has excellent hardness, abrasion resistance and heat resistance. Specific gravity is more than half lighter than glass and strength is similar to inorganic glass. In fact, PMMA has excellent strength and weather resistance, so it is used for aquariums that need to withstand high water pressure and taillights for automobiles exposed to weathering.

Since the melt flow rate is not good at 14g/10min (based on 230/3.8kg), high-pressure injection is required and the sprue runner and gate must be enlarged.

Therefore, Fresnel Factory is producing PMMA lenses by hot pressing most likely. Fresnel

Factory provides custom-sized PMMA lenses by precision laser cutting.

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

1-2) Poly PVC

(Credit card magnifier)

From the nature of PVC, it has excellent processability and can be produced with a thickness thinner than PMMA, normally Poly PVC is 0.4mm. Stiffness can be adjusted according to the amount of plasticizer. Poly PVC is low material cost and good productivity. It is mainly used for mass production of inexpensive consumable lenses, such as credit card magnifiers, which have low optical point quality. Sharpness of each prism is also low compared to PMMA.

Transmittance (%)

Material name

UVB(280~315nm)

UVA(315~400nm)

Visible(400~750nm)

 

 

 

 

Poly PVC

40.23%

80.06%

89.16%

 

 

 

 

The visible wavelength transmittance of Poly PVC is 89.16% at 0.4mm thickness.

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

2.Material for NIR(Near Infrared) wavelength

<![if ! IE]>

<![endif]>Transmittance (%)

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

95

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

65

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly NIR212

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly visible (UV cut)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly visible

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Poly PVC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-5 200

300

400

500

600

700

800

900

 

 

 

1000110012001300140015001600170018001900200021002200230024002500

 

 

 

 

 

 

-10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wavelength (nm)

(Graph2 – Transmittance of NIR(near infrared) material)

2-1) Poly NIR212

(Fresnel Factory NIR lenses)

Transmittance

Material name

UV and Visible(280~750nm)

NIR(750~1,400nm)

 

 

 

Poly NIR212

6.96%

91.46%

 

 

 

Poly NIR212 shows very excellent transmittance in the NIR (750~1400nm) and blocks most of the UV and visible Wavelength. It blocks 93.07% of UV and visible wavelength and shows an average transmittance of 91.46% in the main wavelength of Near Infrared.

Poly NIR212 not only has high transmittance of NIR, but also acts as a band pass filter of visible wavelength to prevent malfunction of the photo diode. Poly NIR212 is produced and supplied by custom-made, and mainly produced by injection method.

Properties

 

Max tensile

*Impact

*Hardness

*HDT(0.45Map)

Melt Flow rate(230/3.8kg)

 

strength

strength

 

 

 

 

 

 

 

 

 

 

 

62Mpa

694J/m

Rockwell M sale 70

137℃

20g/10min

 

 

 

 

 

 

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

Poly NIR212 has excellent tensile strength, impact strength, hardness and HDT. Fresnel Factory uses Poly NIR212 for NIR sensing devices exposed to high temperatures and vibrations in the vehicle during summer.

3.Material for PIR/FIR(8~13um) wavelength

The thermopile and passive infrared sensor that is using for motion sensor detects the wavelength of 8~13um.

Without Fresnel lens, the sensor only can detect less than 1m distance and narrower space with lens. To work with Pyroelectronic detector and thermopile, Fresnel lens that collects infrared rays as a sensor is required. Fresnel Factory manufactures Fresnel lenses for passive infrared and absolute temperature sensors.

<Dimension and FOV(Dome Type Fresnel Lens FOV)>

(Graph3 – Transmittance of PIR, FIR(Far infrared) material)

Material is important to have a wide FOV and excellent Far Infrared transmittance. Therefore, Fresnel Factory is using Poly FIR200 and Poly FIR25, which have a wide FOV and excellent FIR transmittance.

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

3-1) Poly FIR 200

(Fresnel Factory’s PIR lens)

Transmittance (%)

Material name

Poly FIR200

8~12um

42.81% at 0.65T

PIR(Passive Infrared) sensor detects infrared rays in the 8~12um wavelength emitted from body temperature. Fresnel Factory’s Poly FIR200 has an excellent transmittance of 42.81% on average from 8~12um wavelength when 0.65T.

Properties

Max tensile strength

Impact strength

HDT(0.45Map)

Melt Flow Rate

 

 

 

 

24.5Mpa

30.15J/m

73℃

20g/min

 

 

 

 

The price is low since the productivity is high because the melt flow rate is excellent and the time required for injection is short. Despite having the above properties, it is not suitable for use in environments exposed to high temperatures, impacts, and scratches due to its low hardness, impact strength, and HDT compared to Poly FIR25.

504, Sungshin Techno Park, Yeongtong323beongil, Yeongtong-gu,

Suwon-si, Gyeonggi-do, South Korea

Tel: +82-70-7605-0693, Email: ashton@Fresnel Factory.com, www.Fresnel Factory.com

3-2) Poly FIR 25

(Fresnel Factory’s temperature sensor)

Transmittance (%)

Material name

8~13um

 

 

Poly FIR25

19.24% at 0.50T

 

 

The FIR (Far-Infrared) sensor detects temperature by measuring infrared emitted from an object and is used in thermal imaging cameras. The transmittance of Poly FIR25 in the 8~13um wavelength is 19.24% on average, which is lower than that of Poly FIR200. However, Poly FIR25 has better Hardness and high resistance of temperature.

Properties

 

Max tensile

*Impact

*Hardness

*HDT(0.45Map)

Meltflow Rate

 

strength

strength

 

 

 

 

 

 

 

 

 

 

 

26Mpa

70J/m

Rockwell M scale 70

130℃

2.5g/min

 

 

 

 

 

 

Poly FIR25 has higher tensile strength, impact strength, and HDT than Poly FIR200. Due to the above properties, Poly FIR25 is used for temperature sensing sensors exposed to high temperatures despite low transmittance.

Reference

*HDT(Heat Deflection Temperature) : It exhibits heat resistance at a specific temperature when the sample has displacement of 2.5mm under a specific load.

*Hardness : Abrasion resistance

*Izod Impact strength : Impact resistance