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2018 Dec. 15 New Glass Types  event
Glass Polished Lenses


The transmittance characteristics of TAFD 40 (nd = 2.00069, νd = 25.46) exceeding the refractive index nd = 2.0 have been greatly improved.
Characteristics other than transmittance are the same as for TAFD40.



2018 Sep. 06 Notice: The technical problems of the website and its restoration  event

Dear Customers

Due to server problems, you might have difficulty getting access to our website during the period below.
We apologize for any inconvenience caused by this server problems.

August 29, 2018, 4:03 p.m. - August 30, 2018, 1:00 a.m. (PST)
August 30, 2018, 4:58 p.m. - August 30, 2018, 5:13 p.m. (PST)
August 30, 2018, 6:57 p.m. - August 30, 2018, 7:22 p.m. (PST)

We have already solved the problems, been running it as usual.

If anyone who contacted us in the period and not have any response yet, please contact us again.

We apologize for any inconvenience caused by this development.
Thank you for your cooperation.

2018 Jul. 17 New Glass Types  event
Glass Polished Lenses


FDS20-W achieved high dispersion(vd=20.02) more than FDS90(vd=23.78) without decline of spectral transmission.
Because FDS20-W has a property of low density(Specific Gravity=3.37), contribution to the weight saving of lens can be expected.

2018 Jun. 12 cooling velocity and refractive index by MC-glass types  event

In production of non-spherical-power lens by mold press, last refractive index changes on annealing condition. Amount of refractive index change depending on wavelengths is different, it is indicated by catalog data of βC, βd, βF, βg. For your information, annealing condition of MC-glass type and result of constants of dispersion formula and estimated residual stress birefringence are indicated. Residual stress birefringence was calculated using following formula.

Calculation of last stress birefringence

→Excel file of reference information can be downloaded here.

2018 Apr. 01 New Glass Types  event
Glass Polished Lenses


It is a glass with an extremely high partial dispersion ratio (PgF = 0.555) in the νd = 60 area, which have no abnormal dispersion material so far.
And in near infrared spectrum, FCD600 also shows unprecedented partial dispersion ratio and can be used for high-precision correction of chromatic aberration over a wide range of wavelengths.

2017 Dec. 26 New Glass Types  event
Glass Polished Lenses


As low partial dispersion ratio glass in vd=30 range, a sharp lightweight be realized,
and with excellent transmittance and durability, it can be widely used in many fields.

2017 Sep. 15 We exhibited at CIOE 2017 (Shenzhen, China). event

The 19th China International Optoelectronic Expo 2010 was held at CIOE 2017 in Shenzhen, China from Wednesday, September 6th to Saturday, 9th.

We highly appreciate all visitors who visited our booth.

CIOE 2017

2016 May. 31 New Glass Types  event
Glass Polished Lenses


Comparing with TAFD30, TAFD32 has same vd value with close nd value,
while exclude the component of Ta, become lighter and lower cost.


High refractive index( nd=2.05) , high transmission with low dispersion and
high environmental resistance, could be widely use in various applications.


The vd value 16.48 which more extreme than FDS18, with high dispersion,
while sustain high transmittance.

2014 Jul. 22 NRP®- published in Nihon Keizai Shimbun event

Our NRP® was published in the Nihon Keizai Shimbun (Japan Economic News post) dated 21 July 2014.

Our previous processing of lens material (RP, reheat-pressed product) was molded to a predetermined size that included a flap zone, has been used over the years for spherical glass lenses and was manufactured through the process of grinding and polishing.

The NRP® process that we developed produces lens material shape accuracy improvement (three times higher precision of RP), surface defects less than 1/3 and thickness variation accuracy improvement (5 times over the current company standard) which could significantly reduce the allowance of polishing lens and reduce the processing fluctuation.

For more information, please refer to the Contact Us on this site or contact our sales representatives by phone at +81-42-546-2520.

It should be noted that, "NRP" is a registered trademark of HOYA CORPORATION.

2012 May. 07 Arrival thanks "Lens Expo 2012" event

Thanks for yours sincerely coming "Lens Expo 2012"Apr. 25th to 27th, 2012, in Pacifico Yokohama.

Lens Expo 2012

2012 Mar. 23 Attending "Lens Expo 2012" event

We are pleased to inform our dearest customers and whom may concernsthat we will attend Lens Expo 2012 which would be held at Pacifico Yokohama,
And we are sincerely looking forward to your visiting.

Time:  25th~27th April, 2012 10:00am-5:00pm
Location: Pacifico Yokohama
Booth: G-1

In the Expo, we would present our new series of cold processing preforms (MC-FCD500-20, MC-TAF31-15); improved spectral transmission with high dispersion optical glasses (FD60-W, NBFD15-W) and all kinds of aspheric lens use optical glasses, lens polishing use optical glasses.

2011 Sep. 12 Arrival thanks "The 13th China International Optoelectronic Expo". event

Thanks for yours sincerely coming from various countries and cities visiting our Sept 6th to 9th, 2011, in China International Optoelectronic Exposition(CIOE).
We are looking forward to see you next year again.

Arrival thanks The 13th China International Optoelectronic Expo.

2011 Jul. 06 "The 13th China International Optoelectronic Expo". event

The China International Optoelectronic Exposition (CIOE) is a worldwide renowned optoelectronic field exhibition.

This year, the 13th CIOE would be held in Shenzhen Convention& Exhibition Center from September 6th to 9th , 2011 over a total exhibition area of 100,000 square meter. There would be almost 3000 worldwide exhibitors expected to attend.

We, HOYA Group, are pleased to inform our dearest customers and whom may concerns that we will be attending this year to present our most advanced optoelectronic technologies and innovations in the show box 9331( 9th Entry spot), and we are looking forward to your visiting.

<Related Link>
"The 13th China International Optoelectronic Expo"TOP PAGE

2011 Apr. 20 High-Transmission, High-Refractive Index and High-Dispersion Optical Glass [ FDS90-SG ] event

The currently recommended glass FDS90, is widely use as a typical high refractive optical glass with high dispersion. However, this glass type has its specific coloration, many of our customers requested the improvement of its transmission.

In order to response the request of our valuable customers, HOYA was devoted to investigate, and finally come to the result of establishing the stablized production technology of the following high transmission optical glass.
We named it as 「FDS90-SG」 (SG:Special Glass, which is particularly for the improvement of transmission.)

This product is positioned as a contribution to the high performance, high function and high quality of optical products.

In addition, only transmission is changed, without any change of the composition of glass and raw material. Also, the price will be same as current FDS90.

Specifications of Transmission


Other Properties

  • Standard specifications of refractive index::1.84666 ±30×10-5(Premier specification:1.84666 ±20×10-5
  • Standard specifications of abbe-number:23.78 ±0.5% (Premier specification:23.88 ±0.3%)
  • Other chemical properties, thermal properties, mechanical properties and gravity are equivalent to FDS90

PDF Feature Form

Please reference to the following PDF for the standard value of FDS90-SG and Premier νd standard.

fds90-sg fds90(p)

For further information of Premier νd standard of FDS90-SG, please visit "Consultation" of our website or contact the following operation branches.

Japan [+81]
〒196-8510, 3-3-1 Musashino, Akishima, TokyoCity
3-3-1Musashino, Akishima-shi, Tokyo 196-8510, Japan
TEL:(042)546-2520 (glass material)、 (042)546-2518 (spherical and aspherical lens)

Suite 3101-2,Tower 6, The Gateway, 9 Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong
TEL:(2723)6883  FAX:(2723)6928

2011 Apr. 20 New Glass Types  event
Glass Polished Lenses

FCD100pdf(low dispersion and anomalous dispersion glass)

FCD100 is an extremely low dispersion optical glass equivalent to fluorite (CaF2).      Relying on technological innovation, we have successfully launched the mass production of high-performance optical glass at the apex of the FCD family. Combining it with optical glass of high refractive index allows us to achieve unprecedented advanced chromatic aberration correction.

TAFD55pdf(high refractive index and low dispersion glass)

TAFD55 is an optical glass that achieves a high refractive index exceeding nd = 2.0 and boasts an Abbe number above νd = 29. Moreover, it limits the type of rare metal materials used to obtain maximum cost performance.It also exhibits outstanding spectral transmission, making it the best choice in lenses for high-performance digital products. 

TAFD33pdf(high refractive index / low dispersion glass)

TAFD33 is a new high-performance optical glass, which enjoys a high refractive index that exceeds nd = 1.88 and an Abbe number over νd = 40. It achieves low cost by reducing the use of expensive rare metal materials. 

PCD51pdf (low density and low dispersion glass)

PCD51 is a low dispersion optical glass, featuring excellent chemical durability and low specific gravity.This is a high-performance glass especially suited for reducing optical weght.

Glass Molded Lenses

M-TAFD307pdf(high refractive index and low dispersion glass material for molded optical lenses)

M-TAFD307 is a glass molding material  with a high refractive index made from M-TAFD305, which contributes greatly to high-power lens designs. Moreover, its Abbe number is equivalent to that for M-NBFD10, and it can also be used as a high refractive index glass. We are also able to provide aspheric lenses with the same quality as that of M-TAFD305.

M-FDS1pdf(high refractive index and high dispersion glass material for molded optical lenses)

M-FDS1 is a glass molding material whose refractive index properties equal those of E-FDS1. With the use thereof, the number of choices for high refractive index and high dispersion aspheric lenses ranging between M-FDS2 and M-FDS910 has increased. This enables us to meet a wide variety of needs for high-power lenses.

M-LAC8pdf、M-LAC14pdf(low dispersion glass material for molded optical lenses)

M-LAC8 and M-LAC14 were created to respond to the need for high-performance lens designs more efficient than those for M-LAC130. As a result, the current TAFD~TAC lineup of aspheric lenses featuring a high refractive index and low dispersion has been extended to the LAC series.

Heat Process PF

New product lineup of preforms for precision molding (Precision Gob)

We have prepared the following list of glass preforms for precision molding. (Please take note that the preforms marked by the suffix □ □ □ have a different refractive index from molded lenses (MO) designated by the prefix (M-) in the catalogue. )

Glass Type nd νd Tg Glass Type nd νd Tg
MP-FCD1-M20 1.49690 81.54 384 MP-FDS1 1.92286 20.88 468
MP-FCD500-20 1.55352 71.72 397 MP-FDS2 2.00178 19.32 483
MP-PCD4-40 1.61921 63.86 508 MP-FDS910-50 1.82165 24.04 454
MP-PCD51-70 1.59271 66.97 499 MP-LAF81 1.73077 40.50 493
MP-BACD15 1.62263 58.16 528 MP-NBF1 1.74330 49.33 560
MP-LAC8-30 1.71330 53.95 582 MP-NBFD10-20 1.83461 37.29 567
MP-LAC14-80 1.69760 55.51 588 MP-TAF31-15 1.80154 45.46 594
MP-TAC60-90 1.75591 51.18 622 MP-TAF101-100 1.76902 49.29 607
MP-TAC80-60 1.72963 54.07 619 MP-TAFD51-50 1.82130 42.71 600
MP-FD80 1.68893 31.16 454 MP-TAFD307 1.88202 37.22 604

The following are the ordinary glass types

Glass Type nd νd Tg
MP-BACD5N 1.58913 61.25 521
MP-BACD12 1.58313 59.46 500
MP-LAC130 1.69350 53.20 525
MP-NBFD130 1.80610 40.73 567
MP-TAF401 1.77377 47.17 569
MP-TAFD305 1.85135 40.10 612
Cold process PF

MC-TAF1pdf (high refractive index and low dispersion preforms for precision molding)

MC-TAF1 is a glass molding material with a high refractive index and low dispersion, possessing refractive index properties corresponding to those of optical glass TAF1. Highly accurate pressing at low temperatures is possible since the glass transition temperature (Tg) of MC-TAF1 is substantially lower than that of TAF1.

New product lineup

We have prepared the following list of glass preforms for precision molding (Precision Surface). The following glass types are used in the production of high-precision aspheric lenses. (Please take note that the preforms marked by the suffix □ □ □ have a different refractive index from the molded lens (MO) designated by the prefix (M-) in the catalogue.

Glass Type nd νd Tg
MC-FCD1-M20 1.49690 81.54 384
MC-PCD51-70 1.59271 66.97 499
MC-FDS2 2.00178 19.32 483
MC-FDS910-50 1.82165 24.04 454
MC-NBF1 1.74330 49.33 560
MC-TAF1 1.77250 49.47 558
MC-TAF101-100 1.76902 49.29 607
MC-TAFD51-50 1.82130 42.71 600
MC-TAFD307 1.88202 37.22 604

The following are the ordinary glass types

Glass Type nd νd Tg
MC-BACD5N 1.58913 61.25 521
MC-BACD12 1.58313 59.46 500
MC-LAC130 1.69350 53.20 525
MC-NBFD135 1.80834 40.92 547
MC-TAF401 1.77377 47.17 569
MC-TAFD305 1.85135 40.10 612
2011 Mar. 24 “LENS EXPO 2011”. event

We will participate in the “LENS EXPO 2011” and you will be welcome to our booth.

Date: April 20 (Wed)~22 (Fri), 2011
Venue:PACIFICO YOKOHAMA, Yokohama, Japan

At this exhibition, we’ll introduce new members of the “H-series” optical glass types and low melting point glass.

We will also present "Optical Glass materials (blanks for glass lenses, preforms for precision moldings)" and "Optical Lenses (aspherical, spherical)" adopting those new glass types.

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