Need Path For Thumbnail Images Of Product

Hi,

I am writing a function to access product data and I want to export the product thumbnail images since sometime the main image is very big and heavy. How can i get access to the thumbnail path ?

Below is the code i am using to access the product data but cant find the thumbnail image path in it.

 list($products, $search) = fn_get_products($params, 3000);       
fn_gather_additional_products_data($products, array('get_icon' => false, 'get_detailed' => true, 'get_additional' => true, 'get_features' => true,'get_extra' => false, 'detailed_params' => false, 'get_options'=> true));
I am only getting this info
    [main_pair] => Array
        (
            [pair_id] => 35270
            [image_id] => 0
            [detailed_id] => 35283
            [position] => 0
            [detailed] => Array
                (
                    [image_path] => https://dee88m54u9jlgs.cloudfront.net/images/detailed/35/PO-749.jpg?t=1441866154
                    [alt] => Product Name
                    [image_x] => 1200
                    [image_y] => 1800
                    [http_image_path] => http://dee88m54u9jlgs.cloudfront.net/images/detailed/35/PO-749.jpg?t=1441866154
                    [absolute_path] => /home/server/public_html/images/detailed/35/PO-749.jpg
                    [relative_path] => detailed/35/PO-749.jpg
                )
    )

Just set the get_icon option to true to get thumbnail data

list($products, $search) = fn_get_products($params, 3000);       
fn_gather_additional_products_data($products, array('get_icon' => true, 'get_detailed' => true, 'get_additional' => true, 'get_features' => true,'get_extra' => false, 'detailed_params' => false, 'get_options'=> true));