Exhibit 4.8

                             Form of Class D Warrant

THIS WARRANT AND THE SECURITIES  RECEIVABLE  UPON EXERCISE  HEREOF HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES  ACT"),
OR ANY  STATE  SECURITIES  LAW,  AND  MAY  NOT BE  SOLD,  TRANSFERRED,  PLEDGED,
HYPOTHECATED OR OTHERWISE DISPOSED OF UNLESS (i) A REGISTRATION  STATEMENT UNDER
THE  SECURITIES  ACT AND  APPLICABLE  STATE  SECURITIES  LAWS SHALL HAVE  BECOME
EFFECTIVE WITH REGARD THERETO,  OR (ii) AN EXEMPTION FROM REGISTRATION UNDER THE
SECURITIES ACT AND APPLICABLE  STATE  SECURITIES LAWS IS AVAILABLE IN CONNECTION
WITH SUCH OFFER, SALE OR TRANSFER.

AN INVESTMENT IN THESE  SECURITIES  INVOLVES A HIGH DEGREE OF RISK.  SUBSCRIBERS
MUST RELY ON THEIR OWN ANALYSIS OF THE  INVESTMENT  AND  ASSESSMENT OF THE RISKS
INVOLVED. SEE THE RISK FACTORS SET FORTH IN THE ATTACHED DISCLOSURE DOCUMENTS AS
EXHIBIT F.


Warrant to Purchase
____________ shares


                    Class D Warrant to Purchase Common Stock
                                       of
                          LIGHTPATH TECHNOLOGIES, INC.

         THIS CERTIFIES that  ___________ or any subsequent  ("Holder")  hereof,
has the  right  to  purchase  from  LIGHTPATH  TECHNOLOGIES,  INC.,  a  Delaware
corporation (the "Company"),  not more than ______ fully paid and  nonassessable
shares of the Company's Class A Common Stock,  $.01 par value ("Common  Stock"),
at a price equal to the Exercise Price as defined in Section 3 below, subject to
adjustment  as provided  herein,  at any time on or before  5:00 p.m.,  Atlanta,
Georgia time, on July 11, 2002.

         The Holder of this Warrant agrees with the Company that this Warrant is
issued and all rights  hereunder shall be held subject to all of the conditions,
limitations and provisions set forth herein.

         1.       Date of Issuance.
                  -----------------

         This  Warrant  shall be deemed to be issued on July 11,  1997 ("Date of
Issuance").

         2.       Exercise.
                  ---------

         (a) Manner of Exercise.  This Warrant may be exercised as to all or any
lesser  number of full shares of Common Stock covered  hereby upon  surrender of
this  Warrant,  with the  Exercise  Form  attached  hereto  duly  completed  and
executed,  together with the full  Exercise  Price (as defined in Section 3) for
each share of Common Stock as to which this Warrant is exercised,  at
                                       10

the office of the Company,  LightPath  Technologies,  Inc., 6820 Academy Parkway
East NE,  Albuquerque,  New Mexico 87109,  Attention:  President,  Telephone No.
(505) 342-1100,  Telecopy No. (505) 342-1111,  or at such other office or agency
as the Company may designate in writing, by overnight mail, with an advance copy
of the Exercise Form  attached as Exhibit A ("Exercise  Form") sent by facsimile
to the  Company  and its  Transfer  Agent  (such  surrender  and  payment of the
Exercise Price hereinafter called the "Exercise of this Warrant").

         (b) Date of Exercise.  The "Date of  Exercise" of the Warrant  shall be
defined as the date that the advance copy of the completed and executed Exercise
Form is sent by facsimile to the Company and its Transfer  Agent,  provided that
the original  Warrant and Exercise Form are received by the Company  within five
(5) business  days  thereafter.  The original  Warrant and Exercise Form must be
received within five (5) business days of the Date of Exercise,  or the exercise
may, at the Company's  option,  be considered void.  Alternatively,  the Date of
Exercise shall be defined as the date the original  Exercise Form is received by
the Company, if Holder has not sent advance notice by facsimile.

         (c)  Cancellation  of Warrant.  This Warrant shall be canceled upon its
Exercise,  and,  as soon as  practical  after the Date of  Exercise,  the Holder
hereof  shall be  entitled  to  receive  Common  Stock for the  number of shares
purchased upon such Exercise,  and if this Warrant is not exercised in full, the
Holder shall be entitled to receive a new Warrant or Warrants  (containing terms
identical to this Warrant)  representing any unexercised portion of this Warrant
in addition to such Common Stock.

         (d) Holder of Record.  Each person in whose name any Warrant for shares
of Common Stock is issued shall, for all purposes,  be deemed to have become the
Holder  of  record  of such  shares  on the Date of  Exercise  of this  Warrant,
irrespective of the date of delivery of such shares of Common Stock.  Nothing in
this Warrant shall be construed as conferring  upon the Holder hereof any rights
as a shareholder of the Company.

         3.       Payment of Warrant Exercise Price.
                  ----------------------------------

         The Exercise  Price  ("Exercise  Price")  shall equal $5.625  ("Initial
Exercise Price") or, if the Date of Exercise is more than one (1) year after the
Date of  Issuance,  the  lesser of (i) the  Initial  Exercise  Price or (ii) the
"Lowest Reset Price", as that term is defined below. The Company shall calculate
a "Reset  Price" on each  anniversary  date of the Date of Issuance  which shall
equal one hundred  percent (100%) of the average  Closing Price of the Company's
Common  Stock for the five (5) trading days ending on such  anniversary  date of
the Date of  Issuance.  The "Lowest  Reset  Price"  shall equal the lowest Reset
Price  determined on an anniversary  date of the Date of Issuance  preceding the
Date of Exercise,  taking into account,  as appropriate,  any  adjustments  made
pursuant to Section 5 hereof.

         For purposes  hereof,  the term "Closing  Price" shall mean the closing
bid price on the National  Association of Securities Dealers Automated Quotation
System ("Nasdaq") Small Cap Market or OTC Bulletin Board, or if no longer traded
on the Nasdaq Small Cap Market or OTC Bulletin  Board,  the closing price on the
principal national securities exchange or the  over-the-counter  system on which
the Common  Stock is so traded and, if not  available,  the mean of the high and
low  prices  on the  principal  national  securities  exchange  or the  National
Securities Exchange on which the Common Stock is so traded.
                                       11

         Payment of the Exercise  Price may be made by either of the  following,
or a combination thereof, at the election of Holder:

         (i) Cash Exercise: cash, bank or cashiers check or wire transfer; or

         (ii)  Cashless  Exercise:  surrender of this  Warrant at the  principal
office of the Company together with notice of cashless election,  in which event
the Company shall issue Holder a number of shares of Common Stock computed using
the following formula:

                           X = Y (A-B)/A

where:   X = the number of shares of Common Stock to be issued to Holder.
         Y = the number of shares of Common Stock for which this Warrant
             is being exercised.

                       A = the  Market  Price of one (1) share of  Common  Stock
                       (for purposes of this Section  3(ii),  the "Market Price"
                       shall be  defined  as the  average  closing  price of the
                       Common  Stock for the five (5) trading  days prior to the
                       Date of Exercise of this  Warrant (the  "Average  Closing
                       Price"),  as reported by Nasdaq or if the Common Stock is
                       not traded on Nasdaq,  the Average  Closing  Price in the
                       over-the-counter market;  provided,  however, that if the
                       Common  Stock is listed on a stock  exchange,  the Market
                       Price  shall  be  the  Average   Closing  Price  on  such
                       exchange.  If the Common Stock  is/was not traded  during
                       the five (5) trading  days prior to the Date of Exercise,
                       then the closing price for the last  publicly  traded day
                       shall be deemed to be the  closing  price for any and all
                       (if  applicable)  days  during  such five (5) trading day
                       period.

                       B = the Exercise Price.

For purposes of Rule 144 and  sub-section  (d)(3)(ii)  thereof,  it is intended,
understood and acknowledged that the Common Stock issuable upon exercise of this
Warrant in a cashless exercise transaction shall be deemed to have been acquired
at the time this Warrant was issued.  Moreover,  it is intended,  understood and
acknowledged that the holding period for the Common Stock issuable upon exercise
of this  Warrant  in a  cashless  exercise  transaction  shall be deemed to have
commenced on the date this Warrant was issued.

         4.       Transfer and Registration.
                  --------------------------

         (a) Transfer  Rights.  Subject to the  provisions  of Section 8 of this
Warrant,  this Warrant may be transferred on the books of the Company,  in whole
or in part, in person or by attorney,  upon  surrender of this Warrant  properly
completed and endorsed.  This Warrant shall be canceled upon such surrender and,
as soon as  practicable  thereafter,  the person to whom such  transfer  is made
shall be entitled to receive a new Warrant or Warrants as to the portion of this
Warrant transferred, and the Holder of this Warrant shall be entitled to receive
a new Warrant or Warrants as to the portion hereof retained.

         (b) Registrable Securities. The Common Stock issuable upon the exercise
of  this  Warrant  constitute   "Registrable   Securities"  under  that  certain
Registration  Rights Agreement dated on or 
                                       12

about July 3, 1997 by and between the Company and Swartz  Investments,  LLC and,
accordingly,  has  the  benefit  of the  registration  rights  pursuant  to that
agreement.

         5.       Anti-Dilution Adjustments.
                  --------------------------

         (a) Stock Dividend. If the Company shall at any time declare a dividend
payable in shares of Common Stock, then the Holder hereof, upon Exercise of this
Warrant after the record date for the  determination  of Holders of Common Stock
entitled to receive such dividend, shall be entitled to receive upon Exercise of
this  Warrant,  in addition to the number of shares of Common  Stock as to which
this Warrant is Exercised, such additional shares of Common Stock as such Holder
would have received had this Warrant been  Exercised  immediately  prior to such
record date and the Exercise Price will be proportionately adjusted.

         (b) Recapitalization or  Reclassification.  If the Company shall at any
time effect a recapitalization, reclassification or other similar transaction of
such  character  that the shares of Common Stock shall be changed into or become
exchangeable  for a larger or smaller number of shares,  then upon the effective
date thereof, the number of shares of Common Stock which the Holder hereof shall
be entitled to purchase  upon  Exercise of this  Warrant  shall be  increased or
decreased,  as the case may be, in direct proportion to the increase or decrease
in the  number of shares  of  Common  Stock by reason of such  recapitalization,
reclassification or similar transaction, and the Exercise Price shall be, in the
case of an increase in the number of shares,  proportionally  decreased  and, in
the case of  decrease  in the number of shares,  proportionally  increased.  The
Company shall give the Warrant  Holder the same notice it provides to holders of
Common Stock of any transaction described in this Section 5(b).

         (c)  Distributions.  If the  Company  shall at any time  distribute  to
Holders of Common Stock cash,  evidences of indebtedness or other  securities or
assets (other than cash dividends or distributions payable out of earned surplus
or net profits for the current or preceding  year) then,  in any such case,  the
Holder of this  Warrant  shall be  entitled to  receive,  upon  exercise of this
Warrant, with respect to each share of Common Stock issuable upon such Exercise,
the amount of cash or evidences of  indebtedness  or other  securities or assets
which such Holder would have been  entitled to receive with respect to each such
share of  Common  Stock as a result  of the  happening  of such  event  had this
Warrant been Exercised immediately prior to the record date or other date fixing
shareholders to be affected by such event (the "Determination Date") or, in lieu
thereof,  if the Board of  Directors  of the Company  should so determine at the
time of such  distribution,  a reduced  Exercise Price determined by multiplying
the Exercise  Price on the  Determination  Date by a fraction,  the numerator of
which  is the  result  of such  Exercise  Price  reduced  by the  value  of such
distribution  applicable  to  one  share  of  Common  Stock  (such  value  to be
determined by the Board in its  discretion) and the denominator of which is such
Exercise Price.

         (d)  Notice  of  Consolidation  or  Merger.  In the  event of a merger,
consolidation,  exchange of shares, recapitalization,  reorganization,  or other
similar event,  as a result of which shares of Common Stock of the Company shall
be changed into the same or a different  number of shares of the same or another
class or  classes  of stock or  securities  or other  assets of the  Company  or
another  entity  or there is a sale of all or  substantially  all the  Company's
assets  (a  "Corporate  Change"),  then this  Warrant  shall be  assumed  by the
acquiring  entity or any affiliate  thereof and thereafter this Warrant shall be
exerciseable  into such  class  and type of  securities  or other  assets as the
Holder would have  received had the Holder  exercised  this Warrant  immediately
prior to such Corporate Change;  provided,  however, that Company may not affect
                                       13

any Corporate Change unless it first shall have given thirty (30) days notice to
the Holder hereof of any Corporate Change.

         (e)  Exercise  Price  Adjusted.  As  used  in this  Warrant,  the  term
"Exercise  Price" shall mean the purchase price per share specified in Section 3
of this Warrant,  as it may be reset from time to time,  until the occurrence of
an event stated in subsection  (a), (b) or (c) of this Section 5 and  thereafter
shall  mean said  price as  adjusted  from time to time in  accordance  with the
provisions of said subsection.  No such adjustment under this Section 5 shall be
made unless such adjustment  would change the Exercise Price at the time by $.01
or more; provided,  however,  that all adjustments not so made shall be deferred
and made when the aggregate  thereof would change the Exercise Price at the time
by $.01 or more. No adjustment  made pursuant to any provision of this Section 5
shall  have the  effect of  increasing  the  total  consideration  payable  upon
Exercise  of this  Warrant in  respect of all the Common  Stock as to which this
Warrant may be  exercised.  Notwithstanding  anything to the contrary  contained
herein, the Exercise Price shall not be reduced to an amount below the par value
of the Common Stock.

         (f) Adjustments:  Additional Shares, Securities or Assets. In the event
that at any time, as a result of an adjustment  made pursuant to this Section 5,
the Holder of this Warrant shall, upon Exercise of this Warrant, become entitled
to receive  shares  and/or other  securities or assets (other than Common Stock)
then,  wherever  appropriate,  all  references  herein to shares of Common Stock
shall be deemed to refer to and include such shares  and/or other  securities or
assets;  and  thereafter  the number of such shares  and/or other  securities or
assets  shall be  subject to  adjustment  from time to time in a manner and upon
terms as nearly equivalent as practicable to the provisions of this Section 5.

         6.       Fractional Interests.
                  ---------------------

                  No fractional shares or scrip  representing  fractional shares
shall be issuable  upon the  Exercise of this  Warrant,  but on Exercise of this
Warrant,  the Holder hereof may purchase only a whole number of shares of Common
Stock. If, on Exercise of this Warrant, the Holder hereof would be entitled to a
fractional  share of Common  Stock or a right to acquire a  fractional  share of
Common  Stock,  such  fractional  share shall be  disregarded  and the number of
shares of Common Stock issuable upon conversion  shall be the next higher number
of shares.

         7.       Reservation of Shares.
                  ----------------------

                  The  Company  shall at all times  reserve  for  issuance  such
number of authorized  and unissued  shares of Common Stock (or other  securities
substituted  therefor  as herein  above  provided)  as shall be  sufficient  for
Exercise  and  payment  of the  Exercise  Price  of this  Warrant.  The  Company
covenants and agrees that upon  Exercise of this  Warrant,  all shares of Common
Stock issuable upon such Exercise shall be duly and validly issued,  fully paid,
nonassessable and not subject to preemptive  rights,  rights of first refusal or
similar rights of any person or entity.

         8.       Restrictions on Transfer.
                  -------------------------

                  (a) Registration or Exemption  Required.  This Warrant and the
Common  Stock  issuable on Exercise  hereof have not been  registered  under the
Securities Act of 1933, as amended, and may not be sold, assigned,  transferred,
pledged, hypothecated or otherwise disposed of in the absence of registration or
the availability of an exemption from registration 
                                       14

under said Act. All shares of Common Stock issued upon  Exercise of this Warrant
shall bear an appropriate legend to such effect, if applicable.

                  (b) Assignment. Assuming the conditions of (a) above regarding
registration  or exemption have been satisfied,  the Holder may sell,  transfer,
assign, pledge or otherwise dispose of this Warrant, in whole or in part. Holder
shall  deliver a written  notice to  Company,  substantially  in the form of the
Assignment  attached  hereto as Exhibit B,  indicating  the person or persons to
whom the Warrant shall be assigned and the  respective  number of warrants to be
assigned to each assignee.  The Company shall effect the  assignment  within ten
days,  and shall  deliver to the  assignee(s)  designated by Holder a Warrant or
Warrants of like tenor and terms for the appropriate number of shares.

                  (c) Investment  Intent.  The Warrant and Common Stock issuable
upon conversion are intended to be held for investment  purposes and not with an
intent to distribution, as defined in the Act.

         9.       Benefits of this Warrant.
                  -------------------------

                  Nothing in this Warrant  shall be construed to confer upon any
person  other  than the  Company  and the  Holder of this  Warrant  any legal or
equitable  right,  remedy or claim under this Warrant and this Warrant  shall be
for the sole  and  exclusive  benefit  of the  Company  and the  Holder  of this
Warrant.

         10.      Applicable Law.
                  ---------------

                  This  Warrant is issued  under and shall for all  purposes  be
governed by and construed in  accordance  with the laws of the state of Georgia,
without giving effect to conflict of law provisions thereof.

         11.      Loss of Warrant.
                  ----------------

                  Upon  receipt by the Company of  evidence of the loss,  theft,
destruction  or mutilation of this Warrant,  and (in the case of loss,  theft or
destruction)  of indemnity or security  reasonably  satisfactory to the Company,
and upon surrender and cancellation of this Warrant,  if mutilated,  the Company
shall execute and deliver a new Warrant of like tenor and date.

         12.      Notice or Demands.
                  ------------------

Notices or demands pursuant to this Warrant to be given or made by the Holder of
this Warrant to or on the Company shall be sufficiently given or made if sent by
certified or registered mail,  return receipt  requested,  postage prepaid,  and
addressed,  until  another  address is  designated  in  writing by the  Company,
LightPath  Technologies,  Inc., 6820 Academy Parkway East NE,  Albuquerque,  New
Mexico 87109, Attention:  President,  Telephone No. (505) 342-1100, Telecopy No.
(505) 342-1111.  Notices or demands pursuant to this Warrant to be given or made
by the Company to or on the Holder of this Warrant shall be  sufficiently  given
or made if sent by certified  or  registered  mail,  return  receipt  requested,
postage prepaid, and addressed,  Attn: Holder,  address: c/o Swartz Investments,
LLC, 200 Roswell Summit,  Suite 285, 1080 Holcomb Bridge Road, Roswell,  Georgia
30076, until another address is designated in writing by Holder.
                                       15

         IN WITNESS WHEREOF, the undersigned has executed this Warrant as of the
10th day of July, 1997.

                                        LIGHTPATH TECHNOLOGIES, INC.

                                               By:  
                                                    ----------------------------

                                        Print Name: 
                                                    ----------------------------

                                             Title: 
                                                    ----------------------------
                                       16

                                    EXHIBIT A

                                  EXERCISE FORM

                            TO: ___________________.

         The  undersigned  hereby  irrevocably  exercises  the right to purchase
____________  of the shares of Common Stock of LIGHTPATH  TECHNOLOGIES,  INC., a
Delaware  corporation,  evidenced by the attached  Warrant,  and herewith  makes
payment of the  Exercise  Price  with  respect  to such  shares in full,  all in
accordance with the conditions and provisions of said Warrant.

         The  undersigned  agrees  not to offer,  sell,  transfer  or  otherwise
dispose of any of such Common Stock, except in accordance with the provisions of
Section 8 of the Warrant,  and consents that the following legend may be affixed
to the stock  certificates  for the Common Stock hereby  subscribed for, if such
legend is applicable:

         "The securities  represented  hereby have not been registered under the
         Securities  Act of 1933,  as amended  (the  "Securities  Act"),  or any
         provincial or state  securities law, and may not be sold,  transferred,
         pledged,  hypothecated  or  otherwise  disposed  of until  either (i) a
         registration   statement   under  the  Securities  Act  and  applicable
         provincial or state  securities  laws shall have become  effective with
         regard  thereto,  or (ii) an  exemption  from  registration  under  the
         Securities  Act or applicable  provincial or state  securities  laws is
         available in connection with such offer, sale or transfer."

         The  undersigned  requests that stock  certificates  for such shares be
issued,  and a warrant  representing  any unexercised  portion hereof be issued,
pursuant to the Warrant in the name of the  Registered  Holder and  delivered to
the undersigned at the address set forth below:


Dated:

- ------------------------------------------------------------------------
                         Signature of Registered Holder

- ------------------------------------------------------------------------
                        Name of Registered Holder (Print)


- ------------------------------------------------------------------------
                                     Address
- ------------------------------------------------------------------------

- ------------------------------------------------------------------------
                                       17

                                    EXHIBIT B

                                   ASSIGNMENT

                    (To be executed by the registered Holder
                        desiring to transfer the Warrant)

FOR VALUE RECEIVED, the undersigned Holder of the attached Warrant hereby sells,
assigns  and  transfers  unto the  person or  persons  below  named the right to
purchase  _______  shares of the Common  Stock of LIGHTPATH  TECHNOLOGIES,  INC.
evidenced by the attached  Warrant and does hereby  irrevocably  constitute  and
appoint  _______________________  attorney to transfer  the said  Warrant on the
books of the Company, with full power of substitution in the premises.

Dated:                                  
                                        ------------------------------
                                                Signature


Fill in for new Registration of Warrant:

- -----------------------------------
                  Name

- -----------------------------------
                  Address

- -----------------------------------
Please print name and address of assignee
(including zip code number)

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

NOTICE

The signature to the foregoing  Exercise Form or Assignment  must  correspond to
the name as written upon the face of the attached  Warrant in every  particular,
without alteration or enlargement or any change whatsoever.
- --------------------------------------------------------------------------------
                                       18