Atlast find solution by myself
Dim invapp As Inventor.Application
invapp = GetObject(, "Inventor.Application")
Dim invdwg As Inventor.DrawingDocument
invdwg = invapp.ActiveDocument
Dim kDrViews As DrawingViews
Dim OTG As TransientGeometry = invapp.TransientGeometry
Dim oDoc As DrawingDocument
oDoc = invdwg
For j As Integer = 1 To oDoc.Sheets.Count - 6
invdwg.Sheets(j).Activate()
kDrViews = invdwg.Sheets(j).DrawingViews
For i As Integer = 1 To kDrViews.Count
Dim oDrawingView As DrawingView
oDrawingView = kDrViews.Item(i)
Dim oView As View
oView = invapp.ActiveView
Dim oCamera As Camera
oCamera = oView.Camera
Dim oEyePt As Point
oEyePt = OTG.CreatePoint(oDrawingView.Center.X + 0.25, oDrawingView.Center.Y, oCamera.Eye.Z)
oCamera.Eye = oEyePt
Dim oTargetPt As Point
oTargetPt = OTG.CreatePoint(oDrawingView.Center.X + 0.25, oDrawingView.Center.Y, oCamera.Target.Z)
oCamera.Target = oTargetPt
Call oCamera.SetExtents(oDrawingView.Width + 1, oDrawingView.Height + 1.5)
oCamera.Apply()
oCamera.SaveAsBitmap("C:\Temp\Part" & j & "-" & i & ".jpg", 800, 600)
Next
Next
End Sub