Documentation and Analysis of Previous Solution Attempts

Patent Name: Detachable Sideshade for Spectacles

Patent Number: US7862165B2

Patent Inventor: Raymond L. Hobbs

Patent  Status: Expired - Fee Related

Patent Description: A sideshade for reducing peripheral glare that is removably attachable to a temple of spectacles such that the wearer of the spectacles is not required to remove the spectacles in order to attach the sideshade to or detach the sideshade from the temple of the spectacles. The detachable sideshade is optical or near-optical quality so as not to degrade the wearer's peripheral vision. The sideshade may be light in weight and easy to attach and remove. 

Patent Analysis: Although this design does cover a majority of the side pieces one issue is the general shape, firstly its shape prevents it from fitting on larger glasses and the way it is shaped also doesn't accommodate from different glasses types. It also seems to be very complicated to  put on and can pose a risk of breaking the glasses instead. 

Patent Name: Protective Visor

Patent Number: US10052223B2

Patent Inventor(s): Zhaloin Wang, Jianrong Zhou, and Rongjiang Wang

Patent Status: Active

Patent Description: The disclosure provides a protective visor applicable to multiple operation environments for dust prevention, anti-shock glasses, chemical defense and ray radiation protection. The protective visor comprises a headband, a face shield, protective goggles, a light shading screen, a light grid and a housing, which are connected to each other. The light shading screen and the light grid constitute a light refraction and transmission device for refracting and transmitting the light, which includes a light aperture processed to have a curved surface and located at the front and upper end portion of the housing. The light aperture has a serrated lattice shutter structure, and the light shading screen is disposed at the outer side of the light aperture. The protective visor can effectively prevent foreign splash, and absorb radiant heat and certain ultraviolet rays to protect an operator's face. 

Patent Analysis: Although this design is good because it doesn't require it to be put on glasses and it covers the majority of the face it still struggles to protect against the sides and because it is a headband it can be uncomfortable to wear for long periods of time. Furthermore the lack of side protection can result in injury that could be avoided with side protection.