**Exhibit      31.1**

**CERTIFICATION      PURSUANT TO RULE 13A-14(a) OR 15D-14(a) OF THE SECURITIES**

**EXCHANGE      ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE**

**SARBANES-OXLEY      ACT OF 2002**

| 1.   | I                have reviewed this report on Form 10-K of SpatiaLight, Inc.: |
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| 2.   | Based                on my knowledge, this report does not contain any untrue statement                of a                material fact or omit to state a material fact necessary to make                the                statements made, in light of the circumstances under which such statements                were made, not misleading with respect to the period covered by this                report; |
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| 3.   | Based                on my knowledge, the financial statements, and other financial information                included in this report, fairly present in all material respects                the                financial condition, results of operations and cash flows of the                registrant as of, and for, the periods presented in this report; |
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| 4.   | I                am responsible for establishing and maintaining disclosure controls                and                procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)                and                internal control over financial reporting (as defined in Exchange                Act                Rules 13a-15(f) and 15d-15(f), for the registrant and have: |
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| 5.   | I                have disclosed, based on my most recent evaluation of internal control                over financial reporting, to the registrant’s auditors and the audit                committee of the registrant’s board of directors (or persons performing                the equivalent functions): |
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| (a)   | All                significant deficiencies and material weaknesses in the design or                operation of internal control over financial reporting which are                reasonably likely to adversely affect the registrant’s ability to record,                process, summarize and report financial information;                and |
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| (b)   | Any                fraud, whether or not material, that involves management or other                employees who have a significant role in the registrant‘s internal control                over financial reporting. |
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| Date: March              15, 2006 |                                                                                                | /s/ Robert              A.              Olins |
|                                   | Robert              A. Olins                                                                             |
|                                   | Chief                Executive Officer andPrincipal                Financial and AccountingOfficer  |

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