Segment Information (Details) - Schedule of sales by product type - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	$ 984	$ 1,289	$ 1,713	$ 2,450
Optical [Member]
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	848	1,089	1,343	2,117
Rubicon DTP [Member]
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	$ 136	$ 200	$ 370	$ 333