The patented technology relates to lighting fixtures, especially a secondary wave light source fixture. Currently commonly used lighting fixtures, such as writing desk lamps, chandeliers, fluorescent lamps, etc., are all directly irradiated by light bulbs that condense through the lampshade. Especially now that most households use incandescent bulbs as light sources, due to the power consumption of incandescent bulbs Large, the light quality is poor and the light is turbid. When used for home lighting or writing lighting, it is very irritating to the eyes and has a greater impact on the eyes of children and adolescents. The purpose of this patented technology is to develop a lamp with high light quality, high transparency, good clarity, and significant power saving effect in order to improve the lighting intensity of light, save electricity, and improve the lighting environment for family life and study. The purpose of this patented technology is to achieve it through the following technical solutions. Based on the optical principle, the water medium is colorless, highly transparent, and has the characteristics of absorbing, reflecting, and refracting light. Water is used as the secondary wave source emitter. When light passes through it, it can emit ideal secondary wave light, and based on this, a lamp with a secondary wave light source is developed. It consists of a lampshade, a lamp holder, and a bulb. It is characterized in that a sealed interlayer is made of flat glass inside the lampshade. , the interlayer is filled with liquid to form a transparent water tank, and a reflector is provided at the lamp head above the lampshade. There is a water injection hole on the side of the lampshade, and water of different colors can be stored in the interlayer of the lampshade. The lamps based on the secondary wave light source proposed by this patented technology have the following advantages: 1. Good light quality. The light quality has high transparency, low heat content, and no turbidity. It can display text and images clearly. After reading and writing under this light source for a long time, there will be no discomfort such as dry eyes and eye swelling. It has excellent color rendering and improves the quality of the light. Improves the use effect of existing light sources; ②. Outstanding power saving. After actual use, using a 20W incandescent bulb can achieve the lighting effect of an ordinary 60W incandescent bulb, and the light quality is greatly improved; ③. High practicability.