<PAGE>

                                                                   Exhibit 24.01

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 20th
day of July, 2000.

                                   /s/ Roger G. Ackerman
                                   ---------------------------
                                   Roger G. Ackerman

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ John Seely Brown
                                   ---------------------------
                                   John Seely Brown

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ John H. Foster
                                   ---------------------------
                                   John H. Foster

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 19th
day of July, 2000.

                                   /s/ Norman E. Garrity
                                   ---------------------------
                                   Norman E. Garrity

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ Gordon Gund
                                   ---------------------------
                                   Gordon Gund

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ John M. Hennessy
                                   ---------------------------
                                   John M. Hennessy

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ James R. Houghton
                                   ---------------------------
                                   James R. Houghton

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 20th
day of July, 2000.

                                   /s/ John W. Loose
                                   ---------------------------
                                   John W. Loose

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ James J. O'Connor
                                   ---------------------------
                                   James J. O'Connor

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ Catherine A. Rein
                                   ---------------------------
                                   Catherine A. Rein

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ Deborah D. Rieman
                                   ---------------------------
                                   Deborah D. Rieman

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ H. Onno Ruding
                                   ---------------------------
                                   H. Onno Ruding

<PAGE>

                              CORNING INCORPORATED

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or Officer
of Corning Incorporated, a New York corporation, hereby constitutes and appoints
William D. Eggers, James B. Flaws and Katherine A. Asbeck, or any of them, his
true and lawful attorneys and agents, in the name and on behalf of the
undersigned, to do any and all acts and things and execute any and all
instruments which the said attorneys and agents, or any one of them, may deem
necessary or advisable to enable Corning Incorporated to comply with the
Securities Act of 1933, as amended, and any rules, regulations and requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the registration under the Securities Act of 1933 of an issue or issues not
exceeding $4,000,000,000 principal amount of securities of the Corporation,
including without limitation, debentures, notes, shares of Common Stock and
shares of Preferred Stock of the Corporation, to be issued and sold by it in
2000 or thereafter, including specifically, but without limiting the generality
of the foregoing, the power and authority to sign the name of the undersigned in
his capacity as Director and/or Officer of Corning Incorporated to one or more
Registration Statements (on whatever form or forms may be determined to be
appropriate) to be filed with the Securities and Exchange Commission in respect
of the above-described securities, to any and all amendments to the said
Registration Statements, including Pre-Effective and Post-Effective Amendments,
and to any and all instruments and documents filed as a part of or in connection
with the said Registration Statements or amendments thereto; HEREBY RATIFYING
AND CONFIRMING all that said attorneys and agents, or any one of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 21st
day of July, 2000.

                                   /s/ William D. Smithburg
                                   ---------------------------
                                   William D. Smithburg

<PAGE>

                              CORNING FINANCE B.V.

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or
Officer of Corning Finance B.V., a corporation organized under the laws of
the Netherlands, hereby constitutes and appoints Edward W. Rich, Mark S.
Rogus and A. John Peck, Jr., or any of them, his true and lawful attorneys
and agents, in the name and on behalf of the undersigned, to do any and all
acts and things and execute any and all instruments which the said attorneys
and agents, or any one of them, may deem necessary or advisable to enable
Corning Finance B.V., to comply with the Securities Act of 1933, as amended,
and any rules, regulations and requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933 of an issue or issues not exceeding $4,000,000,000
principal amount of debt securities of the Corporation to be issued and sold
by it in 2000 or thereafter, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign the name of the
undersigned in his capacity as Director and/or Officer of Corning Finance
B.V. to one or more Registration Statements (on whatever form or forms may be
determined to be appropriate) to be filed with the Securities and Exchange
Commission in respect of the above-described securities, to any and all
amendments to the said Registration Statements, including Pre-Effective and
Post-Effective Amendments, and to any and all instruments and documents filed
as a part of or in connection with the said Registration Statements or
amendments thereto; HEREBY RATIFYING AND CONFIRMING all that said attorneys
and agents, or any one of them, shall do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 24th
day of July, 2000.

                                   /s/ A. John Peck, Jr.
                                   ---------------------------
                                   A. John Peck, Jr.

<PAGE>

                              CORNING FINANCE B.V.

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or
Officer of Corning Finance B.V., a corporation organized under the laws of
the Netherlands, hereby constitutes and appoints Edward W. Rich, Mark S.
Rogus and A. John Peck, Jr., or any of them, his true and lawful attorneys
and agents, in the name and on behalf of the undersigned, to do any and all
acts and things and execute any and all instruments which the said attorneys
and agents, or any one of them, may deem necessary or advisable to enable
Corning Finance B.V. to comply with the Securities Act of 1933, as amended,
and any rules, regulations and requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933 of an issue or issues not exceeding $4,000,000,000
principal amount of debt securities of the Corporation to be issued and sold
by it in 2000 or thereafter, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign the name of the
undersigned in his capacity as Director and/or Officer of Corning Finance
B.V. to one or more Registration Statements (on whatever form or forms may be
determined to be appropriate) to be filed with the Securities and Exchange
Commission in respect of the above-described securities, to any and all
amendments to the said Registration Statements, including Pre-Effective and
Post-Effective Amendments, and to any and all instruments and documents filed
as a part of or in connection with the said Registration Statements or
amendments thereto; HEREBY RATIFYING AND CONFIRMING all that said attorneys
and agents, or any one of them, shall do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 24th
day of July, 2000.

                                   /s/ Edward W. Rich
                                   ---------------------------
                                   Edward W. Rich

<PAGE>

                              CORNING FINANCE B.V.

                  --------------------------------------------


                                POWER OF ATTORNEY

                  --------------------------------------------



     KNOW ALL MEN BY THESE PRESENTS that the undersigned Director and/or
Officer of Corning Finance B.V., a corporation organized under the laws of
the Netherlands, hereby constitutes and appoints Edward W. Rich, Mark S.
Rogus and A. John Peck, Jr., or any of them, his true and lawful attorneys
and agents, in the name and on behalf of the undersigned, to do any and all
acts and things and execute any and all instruments which the said attorneys
and agents, or any one of them, may deem necessary or advisable to enable
Corning Finance B.V. to comply with the Securities Act of 1933, as amended,
and any rules, regulations and requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933 of an issue or issues not exceeding $4,000,000,000
principal amount of debt securities of the Corporation to be issued and sold
by it in 2000 or thereafter, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign the name of the
undersigned in his capacity as Director and/or Officer of Corning Finance
B.V. to one or more Registration Statements (on whatever form or forms may be
determined to be appropriate) to be filed with the Securities and Exchange
Commission in respect of the above-described securities, to any and all
amendments to the said Registration Statements, including Pre-Effective and
Post-Effective Amendments, and to any and all instruments and documents filed
as a part of or in connection with the said Registration Statements or
amendments thereto; HEREBY RATIFYING AND CONFIRMING all that said attorneys
and agents, or any one of them, shall do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents this 24th
day of July, 2000.

                                   /s/ Mark S. Rogus
                                   ---------------------------
                                   Mark S. Rogus